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	<title>Блог системного администратора &#187; Администрирование</title>
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		<title>Терминальны сервер на примере LTSP и CentOS 5.4</title>
		<link>http://adminofsystem.net/2012/04/%d1%82%d0%b5%d1%80%d0%bc%d0%b8%d0%bd%d0%b0%d0%bb%d1%8c%d0%bd%d1%8b-%d1%81%d0%b5%d1%80%d0%b2%d0%b5%d1%80-%d0%bd%d0%b0-%d0%bf%d1%80%d0%b8%d0%bc%d0%b5%d1%80%d0%b5-ltsp-%d0%b8-centos-5-4/</link>
		<comments>http://adminofsystem.net/2012/04/%d1%82%d0%b5%d1%80%d0%bc%d0%b8%d0%bd%d0%b0%d0%bb%d1%8c%d0%bd%d1%8b-%d1%81%d0%b5%d1%80%d0%b2%d0%b5%d1%80-%d0%bd%d0%b0-%d0%bf%d1%80%d0%b8%d0%bc%d0%b5%d1%80%d0%b5-ltsp-%d0%b8-centos-5-4/#comments</comments>
		<pubDate>Fri, 27 Apr 2012 11:50:18 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[centos]]></category>
		<category><![CDATA[ltsp]]></category>
		<category><![CDATA[pxe]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=465</guid>
		<description><![CDATA[Первое, что мне необходимо было сделать – установить CentOS 5.4 x86_64. В качестве графической оболочки я отдал предпочтение KDE. Первым делом идем на сайт и качаем образ диска c пакетами LTSP (http://ltsp.mirrors.tds.net/pub/ltsp/isos/). Я выбрал версию 4.1.1, т.к. навороты более новых версий (такие как сессии через ssh и прочее мне были не нужны). Далее монтируем этот [...]]]></description>
			<content:encoded><![CDATA[<p>Первое, что мне необходимо было сделать – установить CentOS 5.4 x86_64. В качестве графической оболочки я отдал предпочтение KDE. Первым делом идем на сайт и качаем образ диска c пакетами LTSP (<a target="_blank" rel="nofollow" href="http://adminofsystem.net/goto/http://ltsp.mirrors.tds.net/pub/ltsp/isos/" >http://ltsp.mirrors.tds.net/pub/ltsp/isos/</a>). Я выбрал версию 4.1.1, т.к. навороты более новых версий (такие как сессии через ssh и прочее мне были не нужны).</p>
<p>Далее монтируем этот образ и устанавливаем пакет<em> ltsp-utils.0.11-o.noarch.rpm</em></p>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">#rpm –i ltsp-utils.0.11-o.noarch.rpm</div></div>
<p>После чего мы получаем утилиты командной строки <em>ltspadmin</em> и<em> ltspcfg</em>. Первая утилита используется для настройки установки и самой установки LTSP, вторая – для конфигурации уже установленного терминального сервера. Запускаем утилиту <em>ltspadmin.</em></p>
<p><a href="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-06-22.png" ><img class="aligncenter size-medium wp-image-466" title="CentOS 64-bit-2010-05-08-23-06-22" src="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-06-22-300x225.png" alt="" width="300" height="225" /></a></p>
<p>Первым делом нам необходимо сконфигурировать установщик, соответственно мы выбираем пункт меню <em>Configure the installer options</em>. Первым вопросом нам предлагается определить откуда мы будем получать пакеты. Можно использовать сайт самого проекта, но разумнее указать путь к смонтированному нами образу. В моем случае это <em>file:///media/CDROM/</em>. Обратите внимание, что в пути используется именно 3 слеша, на что указывается и в документации по установке.</p>
<p><a href="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-11-03.png" ><img class="aligncenter size-medium wp-image-467" title="CentOS 64-bit-2010-05-08-23-11-03" src="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-11-03-300x225.png" alt="" width="300" height="225" /></a></p>
<p>Следующий вопрос – путь куда будет установлен LTSP. По умолчанию он указывает на <em>/opt/ltsp</em>. Его изменять я не вижу смысла. Если же вы указали в качестве пути к местоположению пакетом http адрес (который задан по умолчанию) тогда вам необходимо указать адрес http (или же ftp, если пакеты лежат на ftp) прокси-сервера. В конце подтверждаем правильность настроек и нас возвращает к предыдущему пункту меню. Теперь мы можем приступать к установке терминального сервера.</p>
<p>После установки мы будем иметь:</p>
<ul>
<li>пакеты LTSP в папке /opt/ltsp</li>
<li>файлы, необходимые для загрузки PXE клиентов в папке /tftpboot/lts/</li>
</ul>
<h4>Установка DHCP и TFTP серверов.</h4>
<p>Для загрузки по сети наших тонких клиентов нам необходимы DHCP и ТFTP сервера. TFTP сервера в дистрибутиве CentOS я не нашел, а DHCP решил поставить вручную – так надежнее. Соответственно устанавливаем их:</p>
<blockquote>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"># yum install dhcp.x86_64 tftp-server.x86-64</div></div>
</blockquote>
<p>Далее необходимо открыть 69 порт для UDP протокола в фаерволе нашего терминального сервера. Для этого используем консольную утилиту system-config-securitylevel-tui. Жмем кнопку «Уточнить» и настраиваем правила нашего firewall’a</p>
<p><a href="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-27-02.png" ><img class="aligncenter size-medium wp-image-468" title="CentOS 64-bit-2010-05-08-23-27-02" src="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-27-02-300x225.png" alt="" width="300" height="225" /></a>В моем случае у меня на сервере 2 интерфейса: один смотрит в сеть классов – второй является managment-интерфейсом. Выбираем интерфейс, через который наши тонкие клиенты будут стучаться к tftp-серверу и добавляем его к доверенным, а так же открываем для него 69 порт.</p>
<h4>Конфигурация LTSP</h4>
<p>Для конфигурации мы можем воспользоваться пунктом меню Configure LTSP утилиты ltspadmin или же напрямую вызвать ltspcfg. В появившемся меню выбираем ручную настройку:</p>
<p><a href="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-30-30.png" ><img class="aligncenter size-medium wp-image-469" title="CentOS 64-bit-2010-05-08-23-30-30" src="http://adminofsystem.net/wp-content/popaloads/2012/04/CentOS-64-bit-2010-05-08-23-30-30-300x225.png" alt="" width="300" height="225" /></a>Проходимся по всем 11 пунктам. Пункт 8 можно в принципе пропустить. После завершения — у нас будут настроено практически все необходимое.<br />
Стоит уделить внимание пунктам 3 и 7. В пункте 3 будет создан файл примера конфигурации DHCP сервера (<em>/etc/dhcpd.conf.sample</em>), который необходимо отредактировать. После изменений – у меня он приобрел следующий вид:</p>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">#<br />
# Sample configuration file for ISC dhcpd<br />
#<br />
# Make changes to this file and copy it to /etc/dhcpd.conf.sample<br />
#<br />
<br />
ddns-update-style none;<br />
default-lease-time 21600;<br />
max-lease-time 21600;<br />
<br />
#option domain-name &quot;ltsp&quot;; # &amp;lt;--Fix this domain name<br />
<br />
option option-128 code 128 = string;<br />
option option-129 code 129 = text;<br />
<br />
subnet 192.168.130.0 netmask 255.255.255.0 {<br />
use-host-decl-names on;<br />
option log-servers 192.168.130.254;<br />
range dynamic-bootp 192.168.130.1 192.168.130.253; ## пул адресов.<br />
option root-path &quot;192.168.130.254:/opt/ltsp/i386&quot;; ##опция ядру где находиться файловая система.<br />
option broadcast-address 192.168.130.255;<br />
option routers 192.168.130.254;<br />
option subnet-mask 255.255.255.0;<br />
if substring (option vendor-class-identifier, 0, 9) = &quot;PXEClient&quot; ##указываем что передавать в кач-ве загрузчика для PXE клиентов<br />
{<br />
filename &quot;lts/2.6.9-ltsp-3/pxelinux.0&quot;; ##в CentOS tftp обычно запущен с опцией -s, поэтому полный путь от корня указывать не нужно. полный путь должен выглядеть как /tftpboot/lts/.....<br />
}<br />
next-server 192.168.130.254; ## - Обязательно указать. В противном случае загрузочный образ не получит конфиг!<br />
}</div></div>
<p>Хочу обратить внимание на то, что в путь к PXE загрузчику указывается не полный, т.к. в RedHat и CentOS он запускается с ключем –s, соответственно папку tftp-сервера в пути мы опускаем. Так же возникла проблема с тем, что по-идее опцию next-server необходимо указывать только тогда, когда DHCP и TFTP сервера находятся на разных серверах. Но без этой опции загрузка глохла, пока я не продублировал самого себя в качестве next-server’a.</p>
<p>На этом этапе я обрадовался, что настройка завершена и попытался загрузиться с тонкого клиента. Но не тут то было! В итоге запускались Иксы, но подключения к терминальному серверу не происходило. Как оказалось стандартным менеджером сеансов в CentOS являеться gdm (Gnome), а так как Gnome у меня вообще отсутствовал – kdm даже и не пробовал запускаться. Для того, что бы ОСь использовала kdm необходимо внести некоторые изменения в файл конфигурации, а именно -<em> /etc/sysconfig/desktop</em> (если файл отсутствует – его необходимо создать):</p>
<blockquote>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">DISPLAYMANAGER=&quot;KDE&quot;</div></div>
</blockquote>
<p>Следующим огорчением было то, что при запуске иксов на терминальном клиенте – они падали, т.к. сервер тупо отвергал любые попытки открыть удаленные сеансы. Изменить это не проблема, проблемой для меня стало то, что я не мог найти стандартных файлов конфигурации KDE. В CentOS они «спрятаны» совершенно в другом месте. В итоге его местоположение можно определить следующим образом:</p>
<blockquote>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"># locate Xaccess</div></div>
</blockquote>
<p>Далее в указанном файле ищем строчку</p>
<blockquote>
<div class="codecolorer-container text default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="text codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">#* #any host can get a login window</div></div>
</blockquote>
<p>И раскомментируем ее. Перезапускаем Иксы, бутаем наш тонкий клиент – и вуаля! Все работает!</p>

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		<title>Организуем тонкие клиенты linux на примере Ubuntu и LTSP.</title>
		<link>http://adminofsystem.net/2012/04/%d0%be%d1%80%d0%b3%d0%b0%d0%bd%d0%b8%d0%b7%d1%83%d0%b5%d0%bc-%d1%82%d0%be%d0%bd%d0%ba%d0%b8%d0%b5-%d0%ba%d0%bb%d0%b8%d0%b5%d0%bd%d1%82%d1%8b-linux-%d0%bd%d0%b0-%d0%bf%d1%80%d0%b8%d0%bc%d0%b5%d1%80/</link>
		<comments>http://adminofsystem.net/2012/04/%d0%be%d1%80%d0%b3%d0%b0%d0%bd%d0%b8%d0%b7%d1%83%d0%b5%d0%bc-%d1%82%d0%be%d0%bd%d0%ba%d0%b8%d0%b5-%d0%ba%d0%bb%d0%b8%d0%b5%d0%bd%d1%82%d1%8b-linux-%d0%bd%d0%b0-%d0%bf%d1%80%d0%b8%d0%bc%d0%b5%d1%80/#comments</comments>
		<pubDate>Mon, 23 Apr 2012 16:52:34 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[debian]]></category>
		<category><![CDATA[ltsp]]></category>
		<category><![CDATA[nfs]]></category>
		<category><![CDATA[ssh]]></category>
		<category><![CDATA[ubuntu]]></category>
		<category><![CDATA[тонкий клиент]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=460</guid>
		<description><![CDATA[В этой статье я расскажу вам как организовать загрузку тонких клиентов Linux по сети. Для этих целей я решил настроить LTSP (Linux Terminal Server Project) -сервер. Данный метод гарантированно работает на Ubuntu 10.10 Desktop (GNOME). Необходим доступ к репозиториям с пакетами. 1) Сначала установим ssh-сервер для организации связи между компьютерами в сети   sudo apt-get install ssh 2) Затем [...]]]></description>
			<content:encoded><![CDATA[<p>В этой статье я расскажу вам как организовать загрузку тонких клиентов Linux по сети. Для этих целей я решил настроить LTSP (Linux Terminal Server Project) -сервер. Данный метод гарантированно работает на Ubuntu 10.10 Desktop (GNOME). Необходим доступ к репозиториям с пакетами.</p>
<p>1) Сначала установим ssh-сервер для организации связи между компьютерами в сети</p>
<blockquote><p>  sudo apt-get install ssh</p></blockquote>
<p>2) Затем устанавливаем сам LTSP-сервер</p>
<blockquote><p>  sudo apt-get install ltsp-server-standalone</p></blockquote>
<p>3) Далее нужно создать конфигурационные файлы для тонких клиентов</p>
<blockquote><p>  sudo ltsp-build-client</p></blockquote>
<p>4) Организуем поддержку сетевой файловой системы NFS</p>
<blockquote><p>  sudo apt-get install nfs-kernel-server</p></blockquote>
<p>5) Установим TFTP-сервер</p>
<blockquote><p>  sudo apt-get install tftpd-hpa</p></blockquote>
<p>6) В конец файла <em>/etc/exports</em> добавляем следующую строчку</p>
<blockquote><p><em>  /opt/ltsp *(ro,no_root_squash,async,no_subtree_check)</em></p></blockquote>
<p>7)  Перезапускаем сервисы NFS, inetd и tftpd</p>
<blockquote><p>sudo invoke-rc.d openbsd-inetd restart<br />
sudo invoke-rc.d nfs-kernel-server restart<br />
sudo invoke-rc.d tftpd-hpa restart</p></blockquote>
<p> <img src='http://adminofsystem.net/wp-includes/images/smilies/icon_cool.gif' alt='8)' class='wp-smiley' />  Настроим конфигурационный файл сервера DHCP <em>/etc/ltsp/dhcpd.conf</em></p>
<blockquote><p><em>authoritative;</em><br />
<em>  subnet 192.168.1.0 netmask 255.255.255.0 {<br />
range 192.168.1.70 192.168.1.230;<br />
option domain-name 1example.ru&#187;;<br />
option domain-name-servers 192.168.1.1;<br />
option broadcast-address 192.168.1.255;<br />
option routers 192.168.1.1;<br />
option subnet-mask 255.255.255.0;<br />
option root-path &#171;/opt/ltsp/i386&#8243;;<br />
if substring( option vendor-class-identifier, 0, 9 ) = &#171;PXEClient&#187; {<br />
filename &#171;/ltsp/i386/pxelinux.0&#8243;;<br />
}</em></p>
<p><em>else</em></p>
<p><em>     {<br />
filename &#171;/ltsp/i386/nbi.img&#187;;<br />
}<br />
}</em></p></blockquote>
<p>9) Настраиваем сетевое соединение (Система -&gt; Параметры-&gt; Сетевые соединения). Здесь выбираем нужное подключение, например Auto eth0 и в параметрах IPv4 указываем те же значения, что мы указали в файле/etc/ltsp/dhcpd.conf. Или так: Профиль: Вручную; Адрес: 192.168.1.1; Маска подсети: 255.255.255.0; Шлюз: 192.168.1.1;  Домены поиска: 192.168.1.1; ID клиента DHCP: 192.168.1.1.</p>
<p>10) В конец файла <em>/etc/dhcp3/dhcpd.conf</em> добавляем строку:</p>
<blockquote><p><em>  include &#171;/etc/ltsp/dhcpd.conf&#187;;</em></p></blockquote>
<p>11)  Включаем XDMCP (X Display Manager control protocol):</p>
<blockquote><p>  sudo cp /usr/share/doc/gdm/examples/custom.conf /etc/gdm/</p></blockquote>
<p>И после копирования добавляем в <em>/etc/gdm/custom.conf:</em></p>
<blockquote><p><em>  [xdmcp]</em><br />
<em>  Enable=true</em><br />
<em>  DisplaysPerHost=2</em></p></blockquote>
<p>12) Перезапускаем GDM</p>
<blockquote><p>  sudo restart gdm</p></blockquote>
<p>13) Запускаем DHCP</p>
<blockquote><p>  sudo /etc/init.d/dhcp3-server start</p></blockquote>
<p>14) И/Или перезапускаем DHCP</p>
<blockquote><p>  sudo invoke-rc.d dhcp3-server restart</p></blockquote>
<p>На этом настройка LTSP-сервера окончена. Теперь можно включить тонкие клиенты, выбрав загрузку PXE (Preboot Execution Environment). Часто функцию загрузки по сети необходимо разрешить в BIOS (посмотрите в параметрах устройств PCI).<br />
В будущем, после обновления сервера может потребоваться обновить ключи для ssh и образ ltsp:</p>
<blockquote><p>   sudo ltsp-update-sshkeys</p>
<div>   sudo ltsp-update-image &#8212;arch i386</div>
</blockquote>

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		<item>
		<title>Бэкапы виртуальных машин в VMWare ESXi</title>
		<link>http://adminofsystem.net/2011/08/%d0%b1%d1%8d%d0%ba%d0%b0%d0%bf%d1%8b-%d0%b2%d0%b8%d1%80%d1%82%d1%83%d0%b0%d0%bb%d1%8c%d0%bd%d1%8b%d1%85-%d0%bc%d0%b0%d1%88%d0%b8%d0%bd-%d0%b2-vmware-esxi/</link>
		<comments>http://adminofsystem.net/2011/08/%d0%b1%d1%8d%d0%ba%d0%b0%d0%bf%d1%8b-%d0%b2%d0%b8%d1%80%d1%82%d1%83%d0%b0%d0%bb%d1%8c%d0%bd%d1%8b%d1%85-%d0%bc%d0%b0%d1%88%d0%b8%d0%bd-%d0%b2-vmware-esxi/#comments</comments>
		<pubDate>Wed, 31 Aug 2011 09:56:42 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Администрирование]]></category>
		<category><![CDATA[esxi]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[vmware]]></category>
		<category><![CDATA[бэкапы]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=454</guid>
		<description><![CDATA[Проблема резервного копирования виртуальных машин в VMWare ESXi встает очень остро, так как нет нормально инструмента для этих целей. Многие в интернете рекомендуют скрипт ghettoVCB. Я считаю этот скрипт слишком замудренным с избыточным кодом. Все можно было бы сделать проще, вот пример: #!/bin/sh sourcedir=/vmfs/volumes/datastore1 backupdir=/vmfs/volumes/nfs-backup for i in `vim-cmd vmsvc/getallvms&#124;awk '{print($1 &#34;-&#34; $2)}'`; do &#160; [...]]]></description>
			<content:encoded><![CDATA[<p>Проблема резервного копирования виртуальных машин в VMWare ESXi встает очень остро, так как нет нормально инструмента для этих целей. Многие в интернете рекомендуют скрипт ghettoVCB. Я считаю этот скрипт слишком замудренным с избыточным кодом. Все можно было бы сделать проще, вот пример:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666; font-style: italic;">#!/bin/sh</span><br />
<br />
<span style="color: #007800;">sourcedir</span>=<span style="color: #000000; font-weight: bold;">/</span>vmfs<span style="color: #000000; font-weight: bold;">/</span>volumes<span style="color: #000000; font-weight: bold;">/</span>datastore1<br />
<span style="color: #007800;">backupdir</span>=<span style="color: #000000; font-weight: bold;">/</span>vmfs<span style="color: #000000; font-weight: bold;">/</span>volumes<span style="color: #000000; font-weight: bold;">/</span>nfs-backup<br />
<br />
<span style="color: #000000; font-weight: bold;">for</span> i <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">`</span>vim-cmd vmsvc<span style="color: #000000; font-weight: bold;">/</span>getallvms<span style="color: #000000; font-weight: bold;">|</span><span style="color: #c20cb9; font-weight: bold;">awk</span> <span style="color: #ff0000;">'{print($1 &quot;-&quot; $2)}'</span><span style="color: #000000; font-weight: bold;">`</span>; <span style="color: #000000; font-weight: bold;">do</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">if</span> <span style="color: #7a0874; font-weight: bold;">&#91;</span> <span style="color: #007800;">$i</span> <span style="color: #000000; font-weight: bold;">!</span>= <span style="color: #ff0000;">&quot;Vmid-Name&quot;</span> <span style="color: #7a0874; font-weight: bold;">&#93;</span>; <span style="color: #000000; font-weight: bold;">then</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #007800;">vmid</span>=<span style="color: #800000;">${i%%-*}</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #007800;">vmfs</span>=<span style="color: #800000;">${i#*-}</span><br />
&nbsp; &nbsp; &nbsp; &nbsp;<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #c20cb9; font-weight: bold;">mkdir</span> <span style="color: #007800;">$backupdir</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$vmfs</span>.<span style="color: #000000; font-weight: bold;">`</span><span style="color: #c20cb9; font-weight: bold;">date</span> +<span style="color: #000000; font-weight: bold;">%</span>d.<span style="color: #000000; font-weight: bold;">%</span>m.<span style="color: #000000; font-weight: bold;">%</span>Y<span style="color: #000000; font-weight: bold;">`</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; vim-cmd vmsvc<span style="color: #000000; font-weight: bold;">/</span>snapshot.create <span style="color: #007800;">$vmid</span> <span style="color: #007800;">$vmfs</span><span style="color: #000000; font-weight: bold;">@</span>snap <span style="color: #007800;">$vmfs</span><span style="color: #000000; font-weight: bold;">@</span>snap includeMemory <span style="color: #000000;">0</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">for</span> j <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">`</span><span style="color: #c20cb9; font-weight: bold;">ls</span> <span style="color: #007800;">$sourcedir</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$vmfs</span><span style="color: #000000; font-weight: bold;">`</span>; <span style="color: #000000; font-weight: bold;">do</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span style="color: #c20cb9; font-weight: bold;">cat</span> <span style="color: #007800;">$sourcedir</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$vmfs</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$j</span> <span style="color: #000000; font-weight: bold;">|</span> <span style="color: #c20cb9; font-weight: bold;">gzip</span> <span style="color: #000000; font-weight: bold;">&gt;</span> <span style="color: #007800;">$backupdir</span><span style="color: #000000; font-weight: bold;">/</span><span style="color: #007800;">$vmfs</span>.<span style="color: #000000; font-weight: bold;">`</span><span style="color: #c20cb9; font-weight: bold;">date</span> +<span style="color: #000000; font-weight: bold;">%</span>d.<span style="color: #000000; font-weight: bold;">%</span>m.<span style="color: #000000; font-weight: bold;">%</span>Y<span style="color: #000000; font-weight: bold;">`/</span><span style="color: #007800;">$j</span>.gz<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">done</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; vim-cmd vmsvc<span style="color: #000000; font-weight: bold;">/</span>snapshot.removeall <span style="color: #007800;">$vmid</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">fi</span><br />
<span style="color: #000000; font-weight: bold;">done</span><br />
<br />
<span style="color: #7a0874; font-weight: bold;">cd</span> <span style="color: #007800;">$backupdir</span>; <span style="color: #c20cb9; font-weight: bold;">find</span> . <span style="color: #660033;">-type</span> d <span style="color: #660033;">-mtime</span> +<span style="color: #000000;">5</span> <span style="color: #660033;">-exec</span> <span style="color: #c20cb9; font-weight: bold;">rm</span> <span style="color: #660033;">-rf</span> <span style="color: #7a0874; font-weight: bold;">&#123;</span><span style="color: #7a0874; font-weight: bold;">&#125;</span> \;</div></div>
<p>/vmfs/volumes/nfs-backup &#8212; соответственно nfs диск где будут лежать бэкапы<br />
/vmfs/volumes/datastore1 &#8212; хранилище виртуальных машин</p>
<p>бэкапы старше 5 дней удаляются.</p>

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		<title>Windows XP без антивирусов</title>
		<link>http://adminofsystem.net/2011/08/windows-xp-%d0%b1%d0%b5%d0%b7-%d0%b0%d0%bd%d1%82%d0%b8%d0%b2%d0%b8%d1%80%d1%83%d1%81%d0%be%d0%b2/</link>
		<comments>http://adminofsystem.net/2011/08/windows-xp-%d0%b1%d0%b5%d0%b7-%d0%b0%d0%bd%d1%82%d0%b8%d0%b2%d0%b8%d1%80%d1%83%d1%81%d0%be%d0%b2/#comments</comments>
		<pubDate>Wed, 17 Aug 2011 07:56:48 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Windows]]></category>
		<category><![CDATA[windows xp]]></category>
		<category><![CDATA[антивирус]]></category>
		<category><![CDATA[реестр]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=451</guid>
		<description><![CDATA[«Белый список» Основываясь на «белом списке», можно сделать не плохую защиту от малвари. Чтобы его создать нужно выполнить, как минимум, два шага: В ветке реестра HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVerson\Policies\Explorer нужно создать параметр RestrictRun типа DWORD (REG_DWORD) со значением 1. В ветке HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\ создать ключ RestrictRun, а в нем параметр 01 типа STRING (REG_SZ) со значением regedit.exe. Чтобы изменения [...]]]></description>
			<content:encoded><![CDATA[<h3>«Белый список»</h3>
<p>Основываясь на «белом списке», можно сделать не плохую защиту от малвари. Чтобы его создать нужно выполнить, как минимум, два шага:</p>
<p>    В ветке реестра HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVerson\Policies\Explorer нужно создать параметр RestrictRun типа DWORD (REG_DWORD) со значением 1.<br />
    В ветке HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\ создать ключ RestrictRun, а в нем параметр 01 типа STRING (REG_SZ) со значением regedit.exe.</p>
<p>Чтобы изменения вступили в силу, нужно перезагрузить компьютер.<br />
ВАЖНО! Если выполнить пункт 1, но НЕ выполнить пункт 2, то после перезагрузки вы не сможете запустить никакую программу. Чтобы это исправить, вам нужно будет войти под другим пользователем с админскими правами, открыть редактор реестра, найти в ветку HKEY_USERS, выделить ее, выбрать меню Файл -> Загрузить куст&#8230;, в диалоге открытия файла найти файл NTUSER.DATв каталоге юзера, под именем которого был сделан этот косяк, и нажать кнопку «Открыть». После чего найти и удалить параметр RestrictRun либо присвоить ему значение 0, а потом перезагрузиться.</p>
<p>В дальнейшем можно добавлять программы в HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\RestrictRun аналогично пункту 2. При этом перезагрузка уже не нужна, изменения вступают в силу сразу.<br />
Чтобы не лезть в редактор реестра каждый раз, я создал reg-файл, в который занес список программ и в дальнейшем, по мере необходимости, подправлял его, а после правки запускал.</p>
<p>Ниже приведу небольшой кусочек этого файла:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">Windows Registry Editor Version <span style="color: #000000;">5.00</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #ff0000;">&quot;RestrictRun&quot;</span>=dword:00000001<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\RestrictRun<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #ff0000;">&quot;0&quot;</span>=<span style="color: #ff0000;">&quot;regedit.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;1&quot;</span>=<span style="color: #ff0000;">&quot;notepad.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;2&quot;</span>=<span style="color: #ff0000;">&quot;wupdmgr.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;3&quot;</span>=<span style="color: #ff0000;">&quot;cleanmgr.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;4&quot;</span>=<span style="color: #ff0000;">&quot;wordpad.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;5&quot;</span>=<span style="color: #ff0000;">&quot;calc.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;6&quot;</span>=<span style="color: #ff0000;">&quot;mstsc.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;7&quot;</span>=<span style="color: #ff0000;">&quot;taskmgr.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;8&quot;</span>=<span style="color: #ff0000;">&quot;7zFM.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;9&quot;</span>=<span style="color: #ff0000;">&quot;7zG.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;10&quot;</span>=<span style="color: #ff0000;">&quot;7z.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;11&quot;</span>=<span style="color: #ff0000;">&quot;firefox.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;12&quot;</span>=<span style="color: #ff0000;">&quot;java.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;13&quot;</span>=<span style="color: #ff0000;">&quot;FlashUtil10d.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;14&quot;</span>=<span style="color: #ff0000;">&quot;NPSWF32_FlashUtil.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;15&quot;</span>=<span style="color: #ff0000;">&quot;thunderbird.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;16&quot;</span>=<span style="color: #ff0000;">&quot;soffice.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;17&quot;</span>=<span style="color: #ff0000;">&quot;soffice.bin&quot;</span><br />
<span style="color: #ff0000;">&quot;18&quot;</span>=<span style="color: #ff0000;">&quot;python.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;19&quot;</span>=<span style="color: #ff0000;">&quot;sbase.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;20&quot;</span>=<span style="color: #ff0000;">&quot;scalc.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;21&quot;</span>=<span style="color: #ff0000;">&quot;sdraw.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;22&quot;</span>=<span style="color: #ff0000;">&quot;simpress.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;23&quot;</span>=<span style="color: #ff0000;">&quot;smath.exe&quot;</span><br />
<span style="color: #ff0000;">&quot;24&quot;</span>=<span style="color: #ff0000;">&quot;swriter.exe&quot;</span></div></div>

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		<title>Двухнодовый кластер MySQL на FreeBSD</title>
		<link>http://adminofsystem.net/2011/08/%d0%b4%d0%b2%d1%83%d1%85%d0%bd%d0%be%d0%b4%d0%be%d0%b2%d1%8b%d0%b9-%d0%ba%d0%bb%d0%b0%d1%81%d1%82%d0%b5%d1%80-mysql-%d0%bd%d0%b0-freebsd/</link>
		<comments>http://adminofsystem.net/2011/08/%d0%b4%d0%b2%d1%83%d1%85%d0%bd%d0%be%d0%b4%d0%be%d0%b2%d1%8b%d0%b9-%d0%ba%d0%bb%d0%b0%d1%81%d1%82%d0%b5%d1%80-mysql-%d0%bd%d0%b0-freebsd/#comments</comments>
		<pubDate>Wed, 17 Aug 2011 07:49:16 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[cluster]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[node]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=445</guid>
		<description><![CDATA[Минимальные требования для кластера mysql это два сервера для данных и один сервер для управления. Сервер управления нужен лишь во время запуска кластера, но желательно держать его постоянно включенным. Итого требуется 3 физических компьютера, либо 3 виртуальные машины на двух физических серверах. Пусть ноды с данными будут node1.host.ru и node2.host.ru, а управляющая нода mgmt.host.ru. DNS [...]]]></description>
			<content:encoded><![CDATA[<p>Минимальные требования для кластера mysql это два сервера для данных и один сервер для управления. Сервер управления нужен лишь во время запуска кластера, но желательно держать его постоянно включенным. Итого требуется 3 физических компьютера, либо 3 виртуальные машины на двух физических серверах.</p>
<p>Пусть ноды с данными будут node1.host.ru и node2.host.ru, а управляющая нода mgmt.host.ru. DNS настроен, все ноды видят друг друга как по IP так и по FQDN. Так же необходимо чтобы на нодах данных был открыт порт 3306 для всех нод-участников кластера, а на ноде управления открыт порт 1186.</p>
<p><span id="more-445"></span></p>
<p>Допустим IP адреса у серверов такие:</p>
<p>node1 192.168.1.1<br />
node2 192.168.1.2<br />
mgmt 192.168.1.3</p>
<p>Добавим кластерную конфигурацию, создадим конфигурационный файл /etc/my.cnf со следующими парамметрами:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #7a0874; font-weight: bold;">&#91;</span>mysqld<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
ndbcluster<br />
ndb-connectstring=<span style="color: #ff0000;">'host=192.168.1.3:1186'</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>mysql_cluster<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
ndb-connectstring=<span style="color: #ff0000;">'host=192.168.1.3:1186'</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>DB DEFAULT<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
DataMemory: 500M<br />
IndexMemory: 100M</div></div>
<p>Далее создадим на каждой ноде каталог /var/lib/mysql-cluster/<br />
Ставим из портов /usr/ports/misc/compat6x</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">make</span><br />
<span style="color: #c20cb9; font-weight: bold;">make</span> <span style="color: #c20cb9; font-weight: bold;">install</span><br />
rehash</div></div>
<p>Создаем пользователя и группу mysql</p>
<p>Скачиваем последнюю версию дистрибутива 5.0 с сайта разработчика (в версиях 5.1 и 6.0 кластерная составляющая отсутствует, к тому же в коллекции портов FreeBSD даже в версии 5.0 ее тоже нет) и распаковываем архив в /usr/local/</p>
<p>переименовываем папку в mysql чтобы получилось /usr/local/mysql<br />
идем туда и создаем системные базы данных</p>
<p>scripts/mysql_install_db &#8212;user=mysql</p>
<p>Меняем права на папки (находясь в каталоге /usr/local/mysql):</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">chown</span> <span style="color: #660033;">-R</span> root .<br />
<span style="color: #c20cb9; font-weight: bold;">chown</span> <span style="color: #660033;">-R</span> mysql data<br />
<span style="color: #c20cb9; font-weight: bold;">chgrp</span> <span style="color: #660033;">-R</span> mysql .</div></div>
<p>копируем стартстопный скрипт</p>
<p>cp support-files/mysql.server /usr/local/etc/rc.d/mysql.server</p>
<p>Запускаем его</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>mysql.server start</div></div>
<p>создаем файл etc/rc.local и добавляем туда скрипты старта кластера</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>ndbd<br />
<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>mysql.server start</div></div>
<p>Меняем пароли root сервера mysql:</p>
<p>node1:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysqladmin <span style="color: #660033;">-u</span> root <span style="color: #660033;">-h</span> node1.domain.ru password пароль<br />
<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysqladmin <span style="color: #660033;">-u</span> root password пароль</div></div>
<p>node2:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysqladmin <span style="color: #660033;">-u</span> root <span style="color: #660033;">-h</span> node2.domain.ru password пароль<br />
<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysqladmin <span style="color: #660033;">-u</span> root password пароль</div></div>
<p>Оставим пока сервера данных и займемся нодой управления:</p>
<p>Ставим из портов /usr/ports/misc/compat6x</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">make</span><br />
<span style="color: #c20cb9; font-weight: bold;">make</span> <span style="color: #c20cb9; font-weight: bold;">install</span><br />
rehash</div></div>
<p>Нам нужны консоль и демон управления ndb_mgm и ndb_mgmd соответственно. Взять их можно из архива дистрибутива mysql в каталоге /bin. Распаковываем эти два файла в /usr/local/bin</p>
<p>Создаем каталог /var/lib/mysql-cluster/ и создаем в нем конфигурационный файл для управления config.ini:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #7a0874; font-weight: bold;">&#91;</span>NDBD DEFAULT<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #007800;">NoOfReplicas</span>=<span style="color: #000000;">2</span><br />
<span style="color: #007800;">TimeBetweenWatchDogCheck</span>= <span style="color: #000000;">30000</span><br />
<span style="color: #007800;">MaxNoOfOrderedIndexes</span>= <span style="color: #000000;">512</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>MYSQLD DEFAULT<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>NDB_MGMD DEFAULT<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>TCP DEFAULT<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>NDB_MGMD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #007800;">HostName</span>=192.168.1.3<br />
<span style="color: #007800;">DataDir</span>= <span style="color: #000000; font-weight: bold;">/</span>var<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>mysql-cluster<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>NDBD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #007800;">HostName</span>=192.168.1.1<br />
<span style="color: #007800;">DataDir</span>= <span style="color: #000000; font-weight: bold;">/</span>var<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>mysql-cluster<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>NDBD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #007800;">HostName</span>=192.168.1.2<br />
<span style="color: #007800;">DataDir</span>=<span style="color: #000000; font-weight: bold;">/</span>var<span style="color: #000000; font-weight: bold;">/</span>lib<span style="color: #000000; font-weight: bold;">/</span>mysql-cluster<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>MYSQLD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>MYSQLD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>MYSQLD<span style="color: #7a0874; font-weight: bold;">&#93;</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>MYSQLD<span style="color: #7a0874; font-weight: bold;">&#93;</span></div></div>
<p>Стартуем демон управления(для автозапуска при загрузке сервера эту строку нужно добавить в /etc/rc.local):</p>
<p>#/usr/local/bin/ndb_mgmd -f /var/lib/mysql-cluster/config.ini</p>
<p>Запускаем проверку работоспособности консоли:</p>
<p>/usr/local/bin/ndb_mgm</p>
<p>в окне приглашения вводим show, и видим следующую картину:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">Connected to Management Server at: localhost:<span style="color: #000000;">1186</span><br />
Cluster Configuration<br />
<span style="color: #660033;">---------------------</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>ndbd<span style="color: #7a0874; font-weight: bold;">&#40;</span>NDB<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">2</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">3</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from 192.168.1.1<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">4</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from 192.168.1.2<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>ndb_mgmd<span style="color: #7a0874; font-weight: bold;">&#40;</span>MGM<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">2</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.3 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>mysqld<span style="color: #7a0874; font-weight: bold;">&#40;</span>API<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">4</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">5</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">6</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">7</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">8</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span></div></div>
<p>Это означает что конфигурационный файл настроен верно, но ноды данных еще не работают в кластере. Вернемся к нодам данных. На каждой из них останавливаем mysql и инициализируем кластер и перезапускаем сервер:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>mysql.server stop<br />
<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>ndbd <span style="color: #660033;">--initial</span><br />
<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>mysql.server start</div></div>
<p>На ноде управления снова проверяем работу кластера через ndb_mgm:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666;">mgmt# </span><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>ndb_mgm<br />
<span style="color: #660033;">--</span> NDB Cluster <span style="color: #660033;">--</span> Management Client <span style="color: #660033;">--</span><br />
ndb_mgm<span style="color: #000000; font-weight: bold;">&amp;</span>gt; show<br />
Connected to Management Server at: localhost:<span style="color: #000000;">1186</span><br />
<br />
Cluster Configuration<br />
<span style="color: #660033;">---------------------</span><br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>ndbd<span style="color: #7a0874; font-weight: bold;">&#40;</span>NDB<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">2</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">2</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.1 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85, Nodegroup: <span style="color: #000000;">0</span>, Master<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">3</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.2 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85, Nodegroup: <span style="color: #000000;">0</span><span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>ndb_mgmd<span style="color: #7a0874; font-weight: bold;">&#40;</span>MGM<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">1</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.3 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
<span style="color: #7a0874; font-weight: bold;">&#91;</span>mysqld<span style="color: #7a0874; font-weight: bold;">&#40;</span>API<span style="color: #7a0874; font-weight: bold;">&#41;</span><span style="color: #7a0874; font-weight: bold;">&#93;</span> <span style="color: #000000;">4</span> node<span style="color: #7a0874; font-weight: bold;">&#40;</span>s<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">4</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.1 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">5</span> <span style="color: #000000; font-weight: bold;">@</span>192.168.1.2 <span style="color: #7a0874; font-weight: bold;">&#40;</span>Version: 5.0.85<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">6</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<span style="color: #007800;">id</span>=<span style="color: #000000;">7</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span>not connected, accepting connect from any host<span style="color: #7a0874; font-weight: bold;">&#41;</span></div></div>
<p>Если в строках id1 id2 id3 id4 и id5 видно работающие, отвечающие демоны как это видно выше, то все ок и кластер работает. Если нет &#8212; еще раз смотрим эту документацию.</p>
<p>Проверяем отказоустойчивость кластера:</p>
<p>Допустим на первой ноде заходим в mysql и создаем табличку в базе test:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666; font-style: italic;">#/usr/local/mysql/bin/mysql -u root -pпароль</span><br />
Welcome to the MySQL monitor. Commands end with ; or \g.<br />
Your MySQL connection <span style="color: #c20cb9; font-weight: bold;">id</span> is <span style="color: #000000;">3</span><br />
Server version: 5.0.85 MySQL Community Server <span style="color: #7a0874; font-weight: bold;">&#40;</span>GPL<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
Type <span style="color: #ff0000;">'help;'</span> or <span style="color: #ff0000;">'\h'</span> <span style="color: #000000; font-weight: bold;">for</span> help. Type <span style="color: #ff0000;">'\c'</span> to <span style="color: #c20cb9; font-weight: bold;">clear</span> the current input statement.<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; use <span style="color: #7a0874; font-weight: bold;">test</span>;<br />
Database changed<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; CREATE TABLE clustered <span style="color: #7a0874; font-weight: bold;">&#40;</span>i INT<span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">ENGINE</span>=NDBCLUSTER;<br />
Query OK, <span style="color: #000000;">0</span> rows affected <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">1.53</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; INSERT INTO clustered <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> VALUES <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">1</span><span style="color: #7a0874; font-weight: bold;">&#41;</span>;<br />
Query OK, <span style="color: #000000;">1</span> row affected <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.02</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; SELECT <span style="color: #000000; font-weight: bold;">*</span> FROM clustered;<br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> i <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000;">1</span> row <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">set</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.01</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; <span style="color: #7a0874; font-weight: bold;">exit</span><br />
Bye</div></div>
<p>Теперь на второй ноде делаем SELECT из базы test:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666;">node2# </span><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysql <span style="color: #660033;">-u</span> root -pпароль<br />
Welcome to the MySQL monitor. Commands end with ; or \g.<br />
Your MySQL connection <span style="color: #c20cb9; font-weight: bold;">id</span> is <span style="color: #000000;">3</span><br />
Server version: 5.0.85 MySQL Community Server <span style="color: #7a0874; font-weight: bold;">&#40;</span>GPL<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
Type <span style="color: #ff0000;">'help;'</span> or <span style="color: #ff0000;">'\h'</span> <span style="color: #000000; font-weight: bold;">for</span> help. Type <span style="color: #ff0000;">'\c'</span> to <span style="color: #c20cb9; font-weight: bold;">clear</span> the current input statement.<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; use <span style="color: #7a0874; font-weight: bold;">test</span>;<br />
Database changed<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; SELECT <span style="color: #000000; font-weight: bold;">*</span> FROM clustered;<br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> i <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000;">1</span> row <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">set</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.02</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; <span style="color: #7a0874; font-weight: bold;">exit</span><br />
Bye</div></div>
<p>Как видим, на второй ноде у нас уже есть данные, которые были на первой, а значит кластер работает. Можно еще проверить записав в таблицу значение на второй ноде и запустить SELECT на первой &#8212; увидим все данные.</p>
<p>Теперь перезапустим например node2<br />
при этом пока нода будет перезагружаться в ndb_mgm мы последовательно будем видеть такие ее состояния:<br />
нода выключена:</p>
<p>id=3 (not connected, accepting connect from 192.168.1.2)</p>
<p>потом когда mysql на ней запустится станет:</p>
<p>id=3 @192.168.1.2 (Version: 5.0.85, starting, Nodegroup: 0)</p>
<p>потом когда кластер войдет в рабочий режим:</p>
<p>id=3 @192.168.1.2 (Version: 5.0.85, Nodegroup: 0)</p>
<p>Теперь можно проверить работу баз при отказе ноды. Для этого выключим одну из нод из сети, а на второй ноде подключаемся к mysql и дописываем в таблицу еще одно значение:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666; font-style: italic;">#/usr/local/mysql/bin/mysql -u root -pпароль</span><br />
Welcome to the MySQL monitor. Commands end with ; or \g.<br />
Your MySQL connection <span style="color: #c20cb9; font-weight: bold;">id</span> is <span style="color: #000000;">3</span><br />
Server version: 5.0.85 MySQL Community Server <span style="color: #7a0874; font-weight: bold;">&#40;</span>GPL<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
Type <span style="color: #ff0000;">'help;'</span> or <span style="color: #ff0000;">'\h'</span> <span style="color: #000000; font-weight: bold;">for</span> help. Type <span style="color: #ff0000;">'\c'</span> to <span style="color: #c20cb9; font-weight: bold;">clear</span> the current input statement.<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; use <span style="color: #7a0874; font-weight: bold;">test</span>;<br />
Database changed<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; CREATE TABLE clustered <span style="color: #7a0874; font-weight: bold;">&#40;</span>i INT<span style="color: #7a0874; font-weight: bold;">&#41;</span> <span style="color: #007800;">ENGINE</span>=NDBCLUSTER;<br />
Query OK, <span style="color: #000000;">0</span> rows affected <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">1.53</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; INSERT INTO clustered <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #7a0874; font-weight: bold;">&#41;</span> VALUES <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">1</span><span style="color: #7a0874; font-weight: bold;">&#41;</span>;<br />
Query OK, <span style="color: #000000;">1</span> row affected <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.02</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; SELECT <span style="color: #000000; font-weight: bold;">*</span> FROM clustered;<br />
<br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> i <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">2</span> <span style="color: #000000; font-weight: bold;">|</span><br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000;">2</span> rows <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">set</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.02</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; <span style="color: #7a0874; font-weight: bold;">exit</span><br />
Bye</div></div>
<p>Как видно, база данных не потерялась а продолжает работать и без одной ноды. Теперь проверим восстанавливаемость кластера, подключив к сети отключенную ранее ноду и сделав на ней SELECT из этой же базы:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>local<span style="color: #000000; font-weight: bold;">/</span>mysql<span style="color: #000000; font-weight: bold;">/</span>bin<span style="color: #000000; font-weight: bold;">/</span>mysql <span style="color: #660033;">-u</span> root -pпароль<br />
Welcome to the MySQL monitor. Commands end with ; or \g.<br />
Your MySQL connection <span style="color: #c20cb9; font-weight: bold;">id</span> is <span style="color: #000000;">1</span><br />
Server version: 5.0.85 MySQL Community Server <span style="color: #7a0874; font-weight: bold;">&#40;</span>GPL<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
Type <span style="color: #ff0000;">'help;'</span> or <span style="color: #ff0000;">'\h'</span> <span style="color: #000000; font-weight: bold;">for</span> help. Type <span style="color: #ff0000;">'\c'</span> to <span style="color: #c20cb9; font-weight: bold;">clear</span> the current input statement.<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; use <span style="color: #7a0874; font-weight: bold;">test</span>;<br />
Reading table information <span style="color: #000000; font-weight: bold;">for</span> completion of table and column names<br />
You can turn off this feature to get a quicker startup with <span style="color: #660033;">-A</span><br />
Database changed<br />
<br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; SELECT <span style="color: #000000; font-weight: bold;">*</span> FROM clustered;<br />
<br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> i <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">2</span> <span style="color: #000000; font-weight: bold;">|</span><br />
<span style="color: #000000; font-weight: bold;">|</span> <span style="color: #000000;">1</span> <span style="color: #000000; font-weight: bold;">|</span><br />
+------+<br />
<br />
<span style="color: #000000;">2</span> rows <span style="color: #000000; font-weight: bold;">in</span> <span style="color: #000000; font-weight: bold;">set</span> <span style="color: #7a0874; font-weight: bold;">&#40;</span><span style="color: #000000;">0.01</span> sec<span style="color: #7a0874; font-weight: bold;">&#41;</span><br />
mysql<span style="color: #000000; font-weight: bold;">&amp;</span>gt; <span style="color: #7a0874; font-weight: bold;">exit</span><br />
Bye</div></div>
<p>Все работает!</p>

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		</item>
		<item>
		<title>Утилиты мониторинга в OS FreeBSD</title>
		<link>http://adminofsystem.net/2011/04/%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-%d0%bc%d0%be%d0%bd%d0%b8%d1%82%d0%be%d1%80%d0%b8%d0%bd%d0%b3%d0%b0-%d0%b2-os-freebsd/</link>
		<comments>http://adminofsystem.net/2011/04/%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-%d0%bc%d0%be%d0%bd%d0%b8%d1%82%d0%be%d1%80%d0%b8%d0%bd%d0%b3%d0%b0-%d0%b2-os-freebsd/#comments</comments>
		<pubDate>Sun, 03 Apr 2011 19:34:11 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[unix]]></category>
		<category><![CDATA[мониторинг]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=414</guid>
		<description><![CDATA[Есть большое количество ПО для мониторинга типа monit, zabbix, cacti. Они собирают статистику и строят графики. Но дело в том, что не всегда есть возможность открыть браузер и посмотреть те самые графики. Для таких случаев есть консоль. Вот не большой список команд для мониторинга FreeBSD: mount – показывает смонтированные подразделы и флаги из монтирования df [...]]]></description>
			<content:encoded><![CDATA[<p>Есть большое количество ПО для мониторинга типа monit, zabbix, cacti. Они собирают статистику и строят графики. Но дело в том, что не всегда есть возможность открыть браузер и посмотреть те самые графики. Для таких случаев есть консоль. Вот не большой список команд для мониторинга FreeBSD:</p>
<p>mount – показывает смонтированные подразделы и флаги из монтирования</p>
<p>df – показывает смонтированные подразделы, их размер и свободное место на нихfdisk /dev/ad0 – показывает информацию о диске ad0 и разделах на нем</p>
<p>disklabel /dev/ad0s1 – показывает список подразделов в первом разделе диска ad0</p>
<p>swapinfo – показывает список подразделов свопинга на дисках и их использование</p>
<p>fstat – показывает список открытых файлов (имена файлов не выводятся)</p>
<p>pstat -f – выводит список открытых файлов (имена файлов не выводятся)</p>
<p>systat -vmstat n – каждые n секунд выводит количество транзакций с диском в секунду, объем записанных/считанных данных на диск в секунду, средний размер транзакции и процент времени в течение которого диск был занят работой)</p>
<p>iostat – выводит информацию, аналогичную systat -vmstat, но не выводит занятости диска по времени и может выводить среднюю статистику с момента загрузки.</p>
<p>vmstat – выводит количество операций на диске в секунду</p>
<p>/stand/sysinstall – можно посмотреть и изменить разметку диска и монтирование</p>
<p>less /etc/fstab – таблица монтирования при загрузке</p>
<p>systat -vmstat n – вывод показателей загрузки (number of jobs in the run queue averaged over 1, 5 and 15 min), состояния памяти (в страницах), количества процессов в группах, количество вызовов специальных функций ядра (traps, interrupts, system calls, network software interrupts), использование процессора, трансляции имен, активность свопа, прерывания, а также информацию по использованию диска (см)</p>
<p>top – аналогичная информация в сокращенном виде + использование памяти и свопа в мегабайтах, список процессов, отсортированных по использованию процессора.</p>
<p>ps afx – список запущенных процессов и время процессора на каждый</p>
<p>ifconfig – список сетевых интерфейсов с ip-адресами, масками, mac-адресами, типами карт и их статусами (названия карточек можно посмотреть в файле конфигурации ядра)</p>
<p>systat -ifstat n – объем трафика за n секунд на всех сетевых интерфейсах</p>
<p>netstat – вывод активных сетевых соединений (сокетов)</p>
<p>systat -netstat n – аналог netstat в реальном времени</p>
<p>systat -ip n – таблица IP-пакетов и ошибок по типам за n секунд</p>
<p>systat -tcp n – таблица TCP-пакетов и ошибок по типам за n секунд</p>
<p>systat -icmp n – таблица ICMP-пакетов и ошибок по типам за n секунд</p>
<p>netstat -ibt – список интерфейсов, разбитых по ip-адресам (!) с объемом трафика на каждом, количеством ошибок, коллизий, значением watchdog-таймера</p>
<p>netstat -r – таблица маршрутизации</p>
<p>arp -a – таблица ARP</p>
<p>tcpdump -i rl0 host 192.168.1.2 and port 21 – сниффер пакетов на интерфейсе rl0, фильтрующий пакеты, содержащие адрес 192.168.1.2 и порт 21</p>
<p>trafshow -i rl0 – программа для сортировки и вывода сетевых потоков (устанавливается дополнительно пакетом или из портов)</p>
<p>date – текущее время и дата</p>
<p>w – выводит, сколько времени назад система загрузилась и залогиненных пользователей</p>
<p>last – выводит историю перезагрузок и входов пользователей</p>

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		<slash:comments>27</slash:comments>
		</item>
		<item>
		<title>Репликация дисков между двумя серверами на FreeBSD+HASTD</title>
		<link>http://adminofsystem.net/2011/03/%d1%80%d0%b5%d0%bf%d0%bb%d0%b8%d0%ba%d0%b0%d1%86%d0%b8%d1%8f-%d0%b4%d0%b8%d1%81%d0%ba%d0%be%d0%b2-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83-%d0%b4%d0%b2%d1%83%d0%bc%d1%8f-%d1%81%d0%b5%d1%80%d0%b2%d0%b5%d1%80/</link>
		<comments>http://adminofsystem.net/2011/03/%d1%80%d0%b5%d0%bf%d0%bb%d0%b8%d0%ba%d0%b0%d1%86%d0%b8%d1%8f-%d0%b4%d0%b8%d1%81%d0%ba%d0%be%d0%b2-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83-%d0%b4%d0%b2%d1%83%d0%bc%d1%8f-%d1%81%d0%b5%d1%80%d0%b2%d0%b5%d1%80/#comments</comments>
		<pubDate>Fri, 18 Mar 2011 21:18:44 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[Администрирование]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=408</guid>
		<description><![CDATA[2 сервера под управлением FreeBSD 8.1-RELEASE: host1 (192.168.1.2) и host2 (192.168.1.1) На каждом сервере диски: ad0 с системой, ad1 &#8212; неразмеченный. ad1 будет под контролем HASTd и ZFS, на которой будет работать JAIL. Сервера скоммутированы на свиче в одну подсеть (мой случай &#8212; 192.168.1.0/24), 1 Gbit/s интерфейс. Между серверами будет поднят виртуальный (carp) IP 192.168.1.5, [...]]]></description>
			<content:encoded><![CDATA[<p>2 сервера под управлением FreeBSD 8.1-RELEASE: </p>
<p>host1 (192.168.1.2) и host2 (192.168.1.1)<br />
На каждом сервере диски: ad0 с системой, ad1 &#8212; неразмеченный. </p>
<p>ad1 будет под контролем HASTd и ZFS, на которой будет работать JAIL.<br />
Сервера скоммутированы на свиче в одну подсеть (мой случай &#8212; 192.168.1.0/24), 1 Gbit/s интерфейс.<br />
Между серверами будет поднят виртуальный (carp) IP 192.168.1.5, принадлежащий jail-у. </p>
<p>Пишем /etc/rc.conf. </p>
<p>На host1:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #007800;">zfs_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span> <br />
<span style="color: #007800;">hostname</span>=<span style="color: #ff0000;">&quot;host1&quot;</span> <br />
<span style="color: #007800;">ifconfig_em0</span>=<span style="color: #ff0000;">&quot;192.168.1.2/24&quot;</span> <br />
<span style="color: #007800;">defaultrouter</span>=<span style="color: #ff0000;">&quot;192.168.1.1&quot;</span> <br />
<span style="color: #007800;">hastd_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span> <br />
<span style="color: #007800;">cloned_interfaces</span>=<span style="color: #ff0000;">&quot;carp0&quot;</span> <br />
<span style="color: #007800;">ifconfig_carp0</span>=<span style="color: #ff0000;">&quot;vhid 1 advskew 100 pass password 192.168.1.5/24&quot;</span> <br />
<span style="color: #007800;">ezjail_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span></div></div>
<p>На host2:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #007800;">zfs_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span> <br />
<span style="color: #007800;">ifconfig_em0</span>=<span style="color: #ff0000;">&quot;192.168.1.1/24&quot;</span> <br />
<span style="color: #007800;">defaultrouter</span>=<span style="color: #ff0000;">&quot;192.168.1.1&quot;</span> <br />
<span style="color: #007800;">hastd_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span> <br />
<span style="color: #007800;">cloned_interfaces</span>=<span style="color: #ff0000;">&quot;carp0&quot;</span> <br />
<span style="color: #007800;">ifconfig_carp0</span>=<span style="color: #ff0000;">&quot;vhid 1 advskew 100 pass password 192.168.1.5/24&quot;</span> <br />
<span style="color: #007800;">ezjail_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span></div></div>
<p>Пишем конфиг ядра GENERIC-CARP для поддержки carp(4) ( есть впрочем вариант userland-ового net/ucarp ). </p>
<p>На обеих нодах:<br />
Архитектура i386, соотв. /sys/i386/conf/GENERIC-CARP: </p>
<p>device carp </p>
<p>Компилируем и перезагружаемся, на обеих машинах.</p>
<p>make buildkernel KERNCONF=GENERIC-CARP;make installkernel KERNCONF=GENERIC-CARP;reboot</p>
<p>Пишем на обеих машинах одинаковый /etc/hast.conf:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">on host1 <br />
<span style="color: #7a0874; font-weight: bold;">&#123;</span> <br />
&nbsp; &nbsp; &nbsp; listen 192.168.1.2<br />
<span style="color: #7a0874; font-weight: bold;">&#125;</span> <br />
<br />
on host2<br />
<span style="color: #7a0874; font-weight: bold;">&#123;</span> <br />
&nbsp; &nbsp; &nbsp; listen 192.168.1.1<br />
<span style="color: #7a0874; font-weight: bold;">&#125;</span> <br />
resource shared <br />
<span style="color: #7a0874; font-weight: bold;">&#123;</span> <br />
&nbsp; &nbsp; &nbsp; on host1 <br />
&nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">&#123;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">local</span> <span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ad1<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; remote 192.168.1.1 <br />
&nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">&#125;</span> <br />
&nbsp; &nbsp; &nbsp; on host2 <br />
&nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">&#123;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">local</span> <span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ad1 <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; remote 192.168.1.2 &nbsp; <br />
&nbsp; &nbsp; &nbsp; <span style="color: #7a0874; font-weight: bold;">&#125;</span> <br />
<span style="color: #7a0874; font-weight: bold;">&#125;</span></div></div>
<p>Запускаем hastd (на обеих машинах): </p>
<p>/etc/rc.d/hastd restart </p>
<p>Создаем файловую систему для Jail/HASTd (делается только на одной машине, вторая получит все это добро через реплику) и сообщаем HAST-у, что он у нас будет мастером.</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">gpart create <span style="color: #660033;">-s</span> GPT ad1<br />
gpart add <span style="color: #660033;">-b</span> <span style="color: #000000;">34</span> <span style="color: #660033;">-s</span> <span style="color: #000000;">4194230</span> <span style="color: #660033;">-t</span> freebsd-zfs ad1<br />
hastctl create shared <br />
hastctl role primary shared <br />
zpool create jails hast<span style="color: #000000; font-weight: bold;">/</span>shared</div></div>
<p>Настроил ezjail на обеих машинах:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">cat</span> <span style="color: #000000; font-weight: bold;">&gt;</span> <span style="color: #ff0000;">&quot;/usr/local/etc/ezjail.conf&quot;</span><br />
<span style="color: #007800;">ezjail_jaildir</span>=<span style="color: #000000; font-weight: bold;">/</span>jails<br />
<span style="color: #007800;">ezjail_jailtemplate</span>=<span style="color: #800000;">${ezjail_jaildir}</span><span style="color: #000000; font-weight: bold;">/</span>newjail<br />
<span style="color: #666666; font-style: italic;">#ezjail_jailbase=${ezjail_jaildir}/basejail</span><br />
<span style="color: #007800;">ezjail_sourcetree</span>=<span style="color: #000000; font-weight: bold;">/</span>usr<span style="color: #000000; font-weight: bold;">/</span>src<br />
<span style="color: #007800;">ezjail_ftphost</span>=ftp.freebsd.org<br />
<span style="color: #007800;">ezjail_default_execute</span>=<span style="color: #ff0000;">&quot;/usr/bin/login -f root&quot;</span><br />
<span style="color: #007800;">ezjail_default_flavour</span>=<span style="color: #ff0000;">&quot;&quot;</span><br />
<span style="color: #007800;">ezjail_archivedir</span>=<span style="color: #000000; font-weight: bold;">`</span><span style="color: #7a0874; font-weight: bold;">pwd</span> -P<span style="color: #000000; font-weight: bold;">`</span><br />
<span style="color: #007800;">ezjail_uglyperlhack</span>=<span style="color: #ff0000;">&quot;YES&quot;</span><br />
<span style="color: #007800;">ezjail_devfs_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span><br />
<span style="color: #007800;">ezjail_procfs_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span><br />
<span style="color: #007800;">ezjail_mount_enable</span>=<span style="color: #ff0000;">&quot;YES&quot;</span><br />
<span style="color: #007800;">ezjail_use_zfs</span>=<span style="color: #ff0000;">&quot;YES&quot;</span><br />
<span style="color: #007800;">ezjail_jailzfs</span>=<span style="color: #ff0000;">&quot;jails&quot;</span></div></div>
<p>Добавим новый джэйл на host1:</p>
<p>ezjail-admin create -s 10G -c zfs vm1 192.168.1.5<br />
скопируем конфиг /usr/local/etc/ezjail/vm1 на host2.</p>
<p>Содержимое /root/carp_sw скрипта, ответственный за переключение (не забыть chmod +x /root/carp_sw):</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666; font-style: italic;">#!/bin/sh </span><br />
<span style="color: #007800;">pool</span>=<span style="color: #ff0000;">&quot;shared&quot;</span> <br />
<span style="color: #000000; font-weight: bold;">case</span> <span style="color: #ff0000;">&quot;$1&quot;</span> <span style="color: #000000; font-weight: bold;">in</span> <br />
master<span style="color: #7a0874; font-weight: bold;">&#41;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; logger <span style="color: #ff0000;">&quot;carp_sw.sh: Switching to primary provider <span style="color: #007800;">${pool}</span>.&quot;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; hastctl create <span style="color: #800000;">${pool}</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; hastctl role primary <span style="color: #800000;">${pool}</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; logger <span style="color: #ff0000;">&quot;zpool import: &quot;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #c20cb9; font-weight: bold;">sleep</span> <span style="color: #000000;">10</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; zpool import <span style="color: #660033;">-f</span> <span style="color: #660033;">-d</span> <span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>hast jails <br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>jail onestart <br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">;;</span> <br />
slave<span style="color: #7a0874; font-weight: bold;">&#41;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; logger <span style="color: #ff0000;">&quot;carp_sw.sh: Switching to slave profider for <span style="color: #007800;">${pool}</span>.&quot;</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; hastctl create <span style="color: #800000;">${pool}</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; hastctl role secondary <span style="color: #800000;">${pool}</span> <br />
&nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000; font-weight: bold;">;;</span> <br />
<span style="color: #000000; font-weight: bold;">esac</span></div></div>
<p>Также, чтобы упавшая и поднявшаяся машина не пыталась запускать jail, скажем ей что она теперь Slave. Содержимое /etc/rc.local на обеих машинах:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #666666; font-style: italic;">#!/bin/sh </span><br />
<span style="color: #c20cb9; font-weight: bold;">sh</span> <span style="color: #000000; font-weight: bold;">/</span>root<span style="color: #000000; font-weight: bold;">/</span>carp_sw slave</div></div>
<p>Остается все это позапускать (на обеих нодах):</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>routing restart <br />
<span style="color: #000000; font-weight: bold;">/</span>etc<span style="color: #000000; font-weight: bold;">/</span>rc.d<span style="color: #000000; font-weight: bold;">/</span>hastd restart</div></div>
<p>На host1:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">sh</span> <span style="color: #000000; font-weight: bold;">/</span>root<span style="color: #000000; font-weight: bold;">/</span>carp_sw master</div></div>
<p>На host2:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap"><span style="color: #c20cb9; font-weight: bold;">sh</span> <span style="color: #000000; font-weight: bold;">/</span>root<span style="color: #000000; font-weight: bold;">/</span>carp_sw slave</div></div>
<p>Что получили в результате этой работы: </p>
<p>На carp-овом IP работает JAIL, который может содержать все что душе угодно &#8212; почтовый сервис, WEB приложение и пр. Как только обслуживающая этот jail физическая машина падает, работу на себя автоматически подхватывает второй сервер, который запускает JAIL на состояние максимально близкое к времени падени ноды. При этом HAST конфигурируется как MASTER. Когда-нибудь возвратившаяся упавшая машина становится SLAVE-ом, подхватывает реплику и готовится подстраховать MASTER-а</p>

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		</item>
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		<title>RAID1 под FreeBSD на живой системе с помощью atacontrol</title>
		<link>http://adminofsystem.net/2011/03/raid1-%d0%bf%d0%be%d0%b4-freebsd-%d0%bd%d0%b0-%d0%b6%d0%b8%d0%b2%d0%be%d0%b9-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b5-%d1%81-%d0%bf%d0%be%d0%bc%d0%be%d1%89%d1%8c%d1%8e-atacontrol/</link>
		<comments>http://adminofsystem.net/2011/03/raid1-%d0%bf%d0%be%d0%b4-freebsd-%d0%bd%d0%b0-%d0%b6%d0%b8%d0%b2%d0%be%d0%b9-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b5-%d1%81-%d0%bf%d0%be%d0%bc%d0%be%d1%89%d1%8c%d1%8e-atacontrol/#comments</comments>
		<pubDate>Tue, 15 Mar 2011 06:12:04 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[Администрирование]]></category>
		<category><![CDATA[atacontrol]]></category>
		<category><![CDATA[raid]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=405</guid>
		<description><![CDATA[Сначала создаем зеркальный массив RAID1: &#160;# atacontrol create RAID1 ad0 ad1 система создаcт raid1 массив но на него пока ничего не бдует писаться. Но статус у него READY: &#160; &#160; # atacontrol status ar0 &#160; &#160; &#160;ar0: ATA RAID1 subdisks: ad4 ad6 status: READY Система считает что после создания raid, на нем будут созданы слайсы, [...]]]></description>
			<content:encoded><![CDATA[<p>Сначала создаем зеркальный массив RAID1:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp;<span style="color: #666666; font-style: italic;"># atacontrol create RAID1 ad0 ad1</span></div></div>
<p>система создаcт raid1 массив но на него пока ничего не бдует писаться. </p>
<p>Но статус у него READY:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp; &nbsp; <span style="color: #666666; font-style: italic;"># atacontrol status ar0</span><br />
&nbsp; &nbsp; &nbsp;ar0: ATA RAID1 subdisks: ad4 ad6 status: READY</div></div>
<p>Система считает что после создания raid, на нем будут созданы слайсы,<br />
и разделы, после чего на них будут записаны данные.(что и происходит когда мы ставим систему на ar0),при этом данные не будут нарушать целостность рэйд.</p>
<p>Попробуем обмануть систему.</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol list</span><br />
&nbsp; &nbsp;ATA channel <span style="color: #000000;">0</span>:<br />
&nbsp; &nbsp; &nbsp; &nbsp;Master: &nbsp;ad0 <span style="color: #000000; font-weight: bold;">&lt;</span>ST380011A<span style="color: #000000; font-weight: bold;">/</span><span style="color: #000000;">3.06</span><span style="color: #000000; font-weight: bold;">&gt;</span> ATA<span style="color: #000000; font-weight: bold;">/</span>ATAPI revision <span style="color: #000000;">6</span> <span style="color: #000000; font-weight: bold;">//</span>живая система<br />
&nbsp; &nbsp; &nbsp; &nbsp;Slave: &nbsp; &nbsp; &nbsp; no device present<br />
&nbsp; &nbsp;ATA channel <span style="color: #000000;">1</span>:<br />
&nbsp; &nbsp; &nbsp; &nbsp;Master: &nbsp;ad1 <span style="color: #000000; font-weight: bold;">&lt;</span>ST380011A<span style="color: #000000; font-weight: bold;">/</span><span style="color: #000000;">3.06</span><span style="color: #000000; font-weight: bold;">&gt;</span> ATA<span style="color: #000000; font-weight: bold;">/</span>ATAPI revision <span style="color: #000000;">6</span> <span style="color: #000000; font-weight: bold;">//</span>новый диск<br />
&nbsp; &nbsp; &nbsp; &nbsp;Slave: &nbsp; &nbsp; &nbsp; no device present<br />
&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol detach 1</span></div></div>
<p>Теперь у нас есть целостный RAID1 который состоит из одного диска с системой.</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol status ar0</span><br />
&nbsp; &nbsp; &nbsp; ar0: ATA RAID1 subdisks: ad0 DOWN status: DEGRADED</div></div>
<p>Теперь нужно прописать ar0 в fstab</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># Device &nbsp; &nbsp; &nbsp; &nbsp; Mountpoint FStype Options Dump Pass#</span><br />
&nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ar0s1b none swap &nbsp; &nbsp; &nbsp; sw &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: #000000;">0</span> &nbsp; &nbsp; &nbsp; <span style="color: #000000;">0</span><br />
&nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ar0s1a &nbsp; &nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ufs &nbsp; &nbsp; rw &nbsp; &nbsp; <span style="color: #000000;">1</span> &nbsp; &nbsp; &nbsp; <span style="color: #000000;">1</span><br />
&nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ar0s1e &nbsp; &nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>tmp &nbsp; &nbsp; &nbsp; ufs &nbsp; &nbsp; rw &nbsp; &nbsp; <span style="color: #000000;">2</span> &nbsp; &nbsp; &nbsp; <span style="color: #000000;">2</span><br />
&nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ar0s1f &nbsp; &nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>usr &nbsp; &nbsp; &nbsp; ufs &nbsp; &nbsp; rw &nbsp; &nbsp; <span style="color: #000000;">2</span> &nbsp; &nbsp; &nbsp; <span style="color: #000000;">2</span><br />
&nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>dev<span style="color: #000000; font-weight: bold;">/</span>ar0s1d &nbsp; &nbsp; &nbsp;<span style="color: #000000; font-weight: bold;">/</span>var &nbsp; &nbsp; &nbsp; ufs &nbsp; &nbsp; rw &nbsp; &nbsp; <span style="color: #000000;">2</span> &nbsp; &nbsp; &nbsp; <span style="color: #000000;">2</span></div></div>
<p>перезагружаемся, должны смонтироваться все файловые системы,смотрите логи загрузки системы.<br />
после перезагрузки:</p>
<div class="codecolorer-container bash default" style="overflow:auto;white-space:nowrap;border:1px solid #9F9F9F;width:435px;"><div class="bash codecolorer" style="padding:5px;font:normal 12px/1.4em Monaco, Lucida Console, monospace;white-space:nowrap">&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol status ar0</span><br />
&nbsp; &nbsp; &nbsp; ar0: ATA RAID1 subdisks: ad0 DOWN status: DEGRADED<br />
&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol addspare ar0 ad1</span><br />
&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol rebuild ar0</span><br />
&nbsp; &nbsp;<span style="color: #666666; font-style: italic;"># atacontrol status ar0</span><br />
&nbsp; &nbsp; &nbsp; ar0: ATA RAID1 subdisks: ad0 ad1 status: REBUILDING <span style="color: #000000;">1</span><span style="color: #000000; font-weight: bold;">%</span> completed</div></div>
<p>После окончания пересборки(rebuild) система готова к использованию.</p>

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		<item>
		<title>Сборка ядра не поддерживается ваш компилятор.</title>
		<link>http://adminofsystem.net/2011/01/%d1%81%d0%b1%d0%be%d1%80%d0%ba%d0%b0-%d1%8f%d0%b4%d1%80%d0%b0-%d0%bd%d0%b5-%d0%bf%d0%be%d0%b4%d0%b4%d0%b5%d1%80%d0%b6%d0%b8%d0%b2%d0%b0%d0%b5%d1%82%d1%81%d1%8f-%d0%b2%d0%b0%d1%88-%d0%ba%d0%be%d0%bc/</link>
		<comments>http://adminofsystem.net/2011/01/%d1%81%d0%b1%d0%be%d1%80%d0%ba%d0%b0-%d1%8f%d0%b4%d1%80%d0%b0-%d0%bd%d0%b5-%d0%bf%d0%be%d0%b4%d0%b4%d0%b5%d1%80%d0%b6%d0%b8%d0%b2%d0%b0%d0%b5%d1%82%d1%81%d1%8f-%d0%b2%d0%b0%d1%88-%d0%ba%d0%be%d0%bc/#comments</comments>
		<pubDate>Thu, 20 Jan 2011 16:28:01 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[ядро]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=384</guid>
		<description><![CDATA[Описание При сборке ядра выводятся следующие ошибки: kernel/built-in.o: In function `getnstimeofday&#8217;: (.text+0xe34b): undefined reference to `__umoddi3&#8242; kernel/built-in.o: In function `do_gettimeofday&#8217;: (.text+0xe3ec): undefined reference to `__udivdi3&#8242; kernel/built-in.o: In function `do_gettimeofday&#8217;: (.text+0xe409): undefined reference to `__umoddi3&#8242; kernel/built-in.o: In function `do_timer&#8217;: (.text+0xf109): undefined reference to `__udivdi3&#8242; kernel/built-in.o: In function `do_timer&#8217;: (.text+0xf126): undefined reference to `__umoddi3&#8242; Причина Сборка ядра [...]]]></description>
			<content:encoded><![CDATA[<h2>Описание</h2>
<p>При сборке ядра выводятся следующие ошибки:<br />
kernel/built-in.o: In function `getnstimeofday&#8217;:<br />
(.text+0xe34b): undefined reference to `__umoddi3&#8242;<br />
kernel/built-in.o: In function `do_gettimeofday&#8217;:<br />
(.text+0xe3ec): undefined reference to `__udivdi3&#8242;<br />
kernel/built-in.o: In function `do_gettimeofday&#8217;:<br />
(.text+0xe409): undefined reference to `__umoddi3&#8242;<br />
kernel/built-in.o: In function `do_timer&#8217;:<br />
(.text+0xf109): undefined reference to `__udivdi3&#8242;<br />
kernel/built-in.o: In function `do_timer&#8217;:<br />
(.text+0xf126): undefined reference to `__umoddi3&#8242;<br />
Причина</p>
<p>Сборка ядра не поддерживается ваш компилятор.</p>
<h2>Решение</h2>
<h2></h2>
<pre>$ cd /usr/src/linux/
</pre>
<pre>поменять значение CFLAGS_KERNEL в Makefile на CFLAGS_KERNEL    = -fno-tree-scev-cprop
</pre>
<h2></h2>

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		</item>
		<item>
		<title>Вышел новый VirtualBox 4.0.0</title>
		<link>http://adminofsystem.net/2010/12/%d0%b2%d1%8b%d1%88%d0%b5%d0%bb-%d0%bd%d0%be%d0%b2%d1%8b%d0%b9-virtualbox-4-0-0/</link>
		<comments>http://adminofsystem.net/2010/12/%d0%b2%d1%8b%d1%88%d0%b5%d0%bb-%d0%bd%d0%be%d0%b2%d1%8b%d0%b9-virtualbox-4-0-0/#comments</comments>
		<pubDate>Thu, 23 Dec 2010 14:10:44 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Администрирование]]></category>
		<category><![CDATA[virtualbox]]></category>
		<category><![CDATA[vmware]]></category>
		<category><![CDATA[виртуализация]]></category>

		<guid isPermaLink="false">http://adminofsystem.net/?p=381</guid>
		<description><![CDATA[Компания Oracle выпустила новый релиз системы виртуализации VirtualBox 4.0, в котором реализовано несколько существенных улучшений. Начиная с версии 4.0 изменена внутренняя архитектура системы, позволившая оформить в виде внешних пакетов некоторые из возможностей, ранее доступных в базовом комплекте. VirtualBox отныне поставляется в виде двух компонентов: базового, под лицензией GPL2, и внешнего пакета PUEL, в который вынесена [...]]]></description>
			<content:encoded><![CDATA[<p>Компания Oracle выпустила новый релиз системы виртуализации <a target="_blank" rel="nofollow" href="http://adminofsystem.net/goto/http://virtualbox.org/" >VirtualBox 4.0</a>,  в котором реализовано несколько существенных улучшений. Начиная с  версии 4.0 изменена внутренняя архитектура системы, позволившая оформить  в виде внешних пакетов некоторые из возможностей, ранее доступных в  базовом комплекте. VirtualBox  отныне поставляется в виде двух  компонентов: базового, под лицензией GPL2, и внешнего пакета PUEL, в  который вынесена поддержка USB 2.0, RDP-сервера, SAS контроллера и  PXE-загрузчика с поддержкой сетевых карт E1000.</p>
<p>Ключевые <a target="_blank" rel="nofollow" href="http://adminofsystem.net/goto/http://www.virtualbox.org/wiki/Changelog" >улучшения</a> VirtualBox 4.0.0:</p>
<ul>
<li> Значительно переработан пользовательский интерфейс (который теперь называется &#171;Менеджер VirtualBox&#187;):
<ul>
<li> Окно настроек содержит экскизы экранов виртуальных машин, которые обновляются в режиме реального времени;</li>
<li> Добавлен режим работы виртуальной машины  &#171;масштабирование&#187;, который позволяет растянуть окно до нужного размера  (например, в случае, когда гостевое приложение не поддерживает родное  разрешение экрана, можно просматривать его в полный экран);</li>
<li> Добавлена поддержка создания и запуска виртуальных машин с помощью соответствующих ярлыков (расширение файла .vbox);</li>
<li> Список гостевых ОС можно отсортировать;</li>
<li> Стало возможным удалить гостевую машину полностью,  включая все снапшоты, а также при желании удалить присоединенные  устройства хранения;</li>
</ul>
</li>
<li> Новый формат для файлов с настройками и дисковыми образами, измененный с целью повышения переносимости виртуальных машин;</li>
<li> Поддержка формата архивов <a target="_blank" rel="nofollow" href="http://adminofsystem.net/goto/http://en.wikipedia.org/wiki/Open_Virtualization_Format" >OVA</a> (Open Virtualization Format Archive), созданного с целью стандартизации  поставки образов виртуальных машин и формирования пакетов конечных  приложений, предназначенных для запуска в различных виртуальных  окружениях. Пакеты OVA универсальны и не привязаны к определенной  архитектуре и системе виртуализации. Пакеты представляют собой обычный  TAR-архив с набором дополнительной мета-информации, хранимой в  подкаталоге OVF;</li>
<li> Расширены возможности контроля за ресурсами:  добавлена возможность установки ограничения на потребляемое виртуальной  машиной процессорное время и на пропускную способность ввода/вывода;</li>
<li> Обеспечена возможность изменения размера VDI и VHD образов;</li>
<li> Обеспечена возможность выделения гостевым окружениям более 2 Гб ОЗУ на 32-разрядных хост-системах;</li>
<li> Добавлена поддержка эмуляции для гостевых систем  чипсета Intel ICH9 с тремя PCI-шинами, PCI Express и системой MSI  (Message Signaled Interrupts);</li>
<li> Добавлена поддержка эмуляции для гостевых систем звуковой подсистемы Intel HD Audio;</li>
<li> Для iSCSI, VMDK, VHD и дисковых образов Parallels добавлена поддержка асинхронного ввода/вывода;</li>
<li> Подготовлен унифицированный набор Java-биндингов, поддерживающих как локальный API COM/XPCOM, так и удаленный API SOAP;</li>
<li> Для Windows подготовлена функция автоматического обновления пакета паравиртуальных драйверов и дополнений Guest Additions;</li>
<li> Для гостевых окружений на базе Linux и Solaris в  Guest Additions добавлена возможность создания нескольких виртуальных  экранов (драйвер поддерживает X.Org server 1.3 или более новую версию);</li>
<li> В Guest Additions добавлена поддержка копирования файлов в гостевую файловую систему.</li>
</ul>
<p>Готовые установочные пакеты <a target="_blank" rel="nofollow" href="http://adminofsystem.net/goto/http://www.oracle.com/technetwork/server-storage/virtualbox/downloads/index.html" >доступны</a> для Linux (Ubuntu, Fedora, openSUSE, Debian, Mandriva, SLES, RHEL), Solaris, MacOS X и Windows.</p>

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