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<p><a href="elma365-on-premises.html">BRIX On-Premises</a> &gt; <a href="infrastructure-preparation.html">Prepare infrastructure</a> &gt; Load balancer / High availability HAProxy</p>
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<div class="topic__title"><h1 class="p_Heading1"><span class="f_Heading1">High availability HAProxy</span></h1>
<div class="topic__title"><h1 class="p_Heading1"><span class="f_Heading1">Отказоустойчивый HAProxy</span></h1>
</div>
</header>
@ -109,53 +111,53 @@
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<!-- Placeholder for topic body. -->
<p class="p_Normal">HAProxy is a high availability and load balancing tool. In the BRIX system architecture, HAProxy is utilized to construct a fault-tolerant design when organizing a high-availability BRIX cluster. Depending on the architecture being set up, the necessary HAProxy configuration is chosen. This article outlines the installation of HAProxy and keepalived for Ubuntu Linux 20.04 and 22.04.</p>
<p class="p_Normal">Installation consists of six steps:</p>
<p class="p_Normal">HAProxy — инструмент обеспечения высокой доступности и балансировки нагрузки. В архитектуре системы ELMA365 HAProxy используется для построения отказоустойчивой архитектуры при организации высокодоступного кластера ELMA365. В зависимости от выстраиваемой архитектуры выбирается необходимая конфигурация HAProxy. В статье описана установка HAProxy и keepalived для ОС Ubuntu Linux 20.04 и 22.04.</p>
<p class="p_Normal">Установка состоит из шести этапов:</p>
<ol style="list-style-type:decimal">
<li value="1" class="p_Normal"><a href="fail-safe-haproxy.html#prepare-nodes" class="topiclink">Prepare nodes (servers)</a>.</li><li value="2" class="p_Normal"><a href="fail-safe-haproxy.html#install-haproxy" class="topiclink">Install HAProxy</a>.</li><li value="3" class="p_Normal"><a href="fail-safe-haproxy.html#install-keepalived" class="topiclink">Install keepalived</a>.</li><li value="4" class="p_Normal"><a href="fail-safe-haproxy.html#set-up-keepalived" class="topiclink">Configure keepalived</a>.</li><li value="5" class="p_Normal"><a href="fail-safe-haproxy.html#set-up-haproxy-configuration" class="topiclink">Basic HAProxy configuration</a>.</li><li value="6" class="p_Normal"><a href="fail-safe-haproxy.html#add-configurations" class="topiclink">Add configurations for BRIX components balancing</a>.</li></ol>
<h2 class="p_Heading2"><a id="prepare-nodes" class="hmanchor"></a><span class="f_Heading2">Step 1: Prepare nodes (servers)</span></h2>
<li value="1" class="p_Normal"><a href="fail-safe-haproxy.html#prepare-nodes" class="topiclink">Подготовка нод (серверов)</a>.</li><li value="2" class="p_Normal"><a href="fail-safe-haproxy.html#install-haproxy" class="topiclink">Установка HAProxy</a>.</li><li value="3" class="p_Normal"><a href="fail-safe-haproxy.html#install-keepalived" class="topiclink">Установка keepalived</a>.</li><li value="4" class="p_Normal"><a href="fail-safe-haproxy.html#set-up-keepalived" class="topiclink">Настройка keepalived</a>.</li><li value="5" class="p_Normal"><a href="fail-safe-haproxy.html#set-up-haproxy-configuration" class="topiclink">Настройка базовой конфигурации HAProxy</a>.</li><li value="6" class="p_Normal"><a href="fail-safe-haproxy.html#add-configurations" class="topiclink">Добавление конфигураций для балансировки компонентов ELMA365</a>.</li></ol>
<h2 class="p_Heading2"><a id="prepare-nodes" class="hmanchor"></a><span class="f_Heading2">Шаг 1. Подготовка нод (серверов)</span></h2>
<ol style="list-style-type:upper-roman">
<li value="1" class="p_Normal">Create two nodes (servers) with sequentially numbered host name:</li></ol>
<li value="1" class="p_Normal">Создайте две ноды (сервера) с последовательно пронумерованными именами хостов:</li></ol>
<ul style="list-style-type:disc">
<li class="p_Normal"><span style="font-weight: bold;">haproxy-server1.your_domain</span>, <span style="font-weight: bold;">192.168.1.1</span>;</li></ul>
<ul style="list-style-type:disc">
<li class="p_Normal"><span style="font-weight: bold;">haproxy-server2.your_domain</span>, <span style="font-weight: bold;">192.168.1.2</span>.</li></ul>
<ol style="list-style-type:upper-roman" start="2">
<li value="2" class="p_Normal">Create mappings for host names in the DNS server and add the corresponding A-record for the virtual IP.</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">haproxy-server.your_domain&nbsp;&lt;-&gt;&nbsp;192.168.1.13.</span></p>
<p class="p_Normal">If not possible, add the necessary records in <code><b>/etc/hosts</b></code>.</p>
<li value="2" class="p_Normal">Создайте сопоставления имён хостов в DNS-сервере и внесите соответствующую А-запись для виртуального IP:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">haproxy-server.your_domain&nbsp;A&nbsp;192.168.1.13</span></p>
<p class="p_Normal">Если такой возможности нет, внесите нужные записи в <code><b>/etc/hosts</b></code>.</p>
<ol style="list-style-type:upper-roman" start="3">
<li value="3" class="p_Normal">Enable <code><b>net.ipv4.ip_nonlocal_bind, net.ipv4.ip_forward</b></code> kernel parameters by executing the following commands:</li></ol>
<li value="3" class="p_Normal">Включите параметры ядра <code><b>net.ipv4.ip_nonlocal_bind, net.ipv4.ip_forward</b></code>, выполнив следующие команды:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;echo&nbsp;net.ipv4.ip_nonlocal_bind=1&nbsp;&gt;&gt;&nbsp;/etc/sysctl.conf</span><br />
<span class="f_CodeExample">sudo&nbsp;echo&nbsp;net.ipv4.ip_forward=1&nbsp;&gt;&gt;&nbsp;/etc/sysctl.conf</span><br />
<span class="f_CodeExample">sudo&nbsp;sysctl&nbsp;-p</span></p>
<h2 class="p_Heading2"><a id="install-haproxy" class="hmanchor"></a><span class="f_Heading2">Step 2: Install HAProxy</span></h2>
<h2 class="p_Heading2"><a id="install-haproxy" class="hmanchor"></a><span class="f_Heading2">Шаг 2. Установка HAProxy</span></h2>
<ol style="list-style-type:upper-roman">
<li value="1" class="p_Normal">Install HAProxy on all nodes with the command:</li></ol>
<li value="1" class="p_Normal">Установите HAProxy на все узлы, выполнив команду:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;apt&nbsp;install&nbsp;haproxy&nbsp;-y</span></p>
<ol style="list-style-type:upper-roman" start="2">
<li value="2" class="p_Normal">Start the HAProxy service on all nodes and add it to autostart:</li></ol>
<li value="2" class="p_Normal">Запустите сервис HAProxy на всех узлах и добавьте его в автозагрузку:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;systemctl&nbsp;enable&nbsp;--now&nbsp;haproxy</span></p>
<h2 class="p_Heading2"><a id="install-keepalived" class="hmanchor"></a><span class="f_Heading2">Step 3: Install keepalived</span></h2>
<p class="p_Normal">Install keepalived on all nodes:</p>
<h2 class="p_Heading2"><a id="install-keepalived" class="hmanchor"></a><span class="f_Heading2">Шаг 3. Установка keepalived</span></h2>
<p class="p_Normal">Установите keepalived на все узлы:</p>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;apt&nbsp;update</span><br />
<span class="f_CodeExample">sudo&nbsp;apt&nbsp;install&nbsp;keepalived</span></p>
<h2 class="p_Heading2"><a id="set-up-keepalived" class="hmanchor"></a><span class="f_Heading2">Step 4: Configure keepalived</span></h2>
<h2 class="p_Heading2"><a id="set-up-keepalived" class="hmanchor"></a><span class="f_Heading2">Шаг 4. Настройка keepalived</span></h2>
<ol style="list-style-type:upper-roman">
<li value="1" class="p_Normal">Create the keepalived directory:</li></ol>
<li value="1" class="p_Normal">Создайте директорию keepalived:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;mkdir&nbsp;-p&nbsp;/usr/libexec/keepalived</span></p>
<ol style="list-style-type:upper-roman" start="2">
<li value="2" class="p_Normal">Create the <code><b>haproxy_check.sh</b></code> script file for monitoring the HAProxy health:</li></ol>
<li value="2" class="p_Normal">Создайте файл скрипта <code><b>haproxy_check.sh</b></code> для отслеживания работоспособности HAProxy:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;nano&nbsp;/usr/libexec/keepalived/haproxy_check.sh</span></p>
<ol style="list-style-type:upper-roman" start="3">
<li value="3" class="p_Normal">Add the health check script to the <code><b>haproxy_check.sh</b></code> file:</li></ol>
<li value="3" class="p_Normal">Добавьте в файл haproxy_check.sh скрипт проверки работоспособности HAProxy:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">#!/bin/bash</span><br />
<span class="f_CodeExample">/bin/kill&nbsp;-0&nbsp;$(cat&nbsp;/</span><span class="f_CodeExample" style="font-weight: bold;">var</span><span class="f_CodeExample">/run/haproxy.pid)</span></p>
<ol style="list-style-type:upper-roman" start="4">
<li value="4" class="p_Normal">Create the keepalived configuration file on each node:</li></ol>
<li value="4" class="p_Normal">Создайте файл конфигурации keepalived на каждой ноде:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;nano&nbsp;/etc/keepalived/keepalived.conf</span></p>
<ol style="list-style-type:upper-roman" start="5">
<li value="5" class="p_Normal">Add an example keepalived configuration for the <span style="font-weight: bold;">haproxy-server1.your_domain</span> node to the keepalived.conf file <code><b>keepalived.conf</b></code>:</li></ol>
<li value="5" class="p_Normal">Добавьте в файл <code><b>keepalived.conf</b></code> пример конфигураций keepalived для узла <span style="font-weight: bold;">haproxy-server1.your_domain</span>:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">global_defs&nbsp;{</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;router_id&nbsp;haproxy-server1</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;enable_script_security</span><br />
@ -186,7 +188,7 @@
<span class="f_CodeExample">&nbsp;&nbsp;}</span><br />
<span class="f_CodeExample">}</span></p>
<ol style="list-style-type:upper-roman" start="6">
<li value="6" class="p_Normal">Add an example keepalived configuration for the <span style="font-weight: bold;">haproxy-server2.your_domain</span> node to the keepalived.conf file <code><b>keepalived.conf</b></code>:</li></ol>
<li value="6" class="p_Normal">Добавьте в файл <code><b>keepalived.conf</b></code> пример конфигураций keepalived для узла <span style="font-weight: bold;">haproxy-server2.your_domain</span>:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">global_defs&nbsp;{</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;router_id&nbsp;haproxy-server2</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;enable_script_security</span><br />
@ -216,24 +218,23 @@
<span class="f_CodeExample">&nbsp;&nbsp;&nbsp;&nbsp;auth_pass&nbsp;SecretPassword</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;}</span><br />
<span class="f_CodeExample">}</span></p>
<p class="p_Normal">Where:</p>
<p class="p_Normal">Где введённые параметры:</p>
<ul style="list-style-type:disc">
<li class="p_Normal"><code><b>router_id</b></code> is the router ID, a unique value on each node;</li><li class="p_Normal"><code><b>script_user</b></code> is the user running VRRP scripts;</li><li class="p_Normal"><code><b>interface</b></code> is the interface name to which keepalived will be attached;</li><li class="p_Normal"><code><b>virtual_router_id</b></code> is the virtual router ID, a shared value on all nodes;</li><li class="p_Normal"><code><b>priority</b></code> is the priority of nodes within the virtual route;</li><li class="p_Normal"><code><b>state</b></code> is the node role type in the virtual router;</li><li class="p_Normal"><code><b>virtual_ipaddress</b></code> is the virtual IP;</li><li class="p_Normal"><code><b>auth_type</b></code> is the authentication type in the virtual router;</li><li class="p_Normal"><code><b>auth_pass</b></code> is the password.</li></ul>
<li class="p_Normal"><code><b>router_id</b></code> — ID роутера, уникальное значение на каждом узле;</li><li class="p_Normal"><code><b>script_user</b></code> — пользователь, от имени которого будут запускаться скрипты VRRP;</li><li class="p_Normal"><code><b>interface</b></code> — наименование интерфейса, к которому будет привязан keepalived;</li><li class="p_Normal"><code><b>virtual_router_id</b></code> — ID виртуального роутера, общее значение на всех узлах;</li><li class="p_Normal"><code><b>priority</b></code> — приоритет нод внутри виртуального роутера;</li><li class="p_Normal"><code><b>state</b></code> — тип роли ноды в виртуальном роутере;</li><li class="p_Normal"><code><b>virtual_ipaddress</b></code> — виртуальный IP;</li><li class="p_Normal"><code><b>auth_type</b></code> — тип аутентификации в виртуальном роутере;</li><li class="p_Normal"><code><b>auth_pass</b></code> — пароль.</li></ul>
<ol style="list-style-type:upper-roman" start="7">
<li value="7" class="p_Normal">Restart keepalived on all nodes:</li></ol>
<li value="7" class="p_Normal">Перезапустите keepalived на всех узлах:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;systemctl&nbsp;restart&nbsp;keepalived</span></p>
<h2 class="p_Heading2"><a id="set-up-haproxy-configuration" class="hmanchor"></a><span class="f_Heading2">Step 5: Basic HAProxy configuration</span></h2>
<h2 class="p_Heading2"><a id="set-up-haproxy-configuration" class="hmanchor"></a><span class="f_Heading2">Шаг 5. Настройка базовой конфигурации HAProxy</span></h2>
<ol style="list-style-type:upper-roman">
<li value="1" class="p_Normal">Move the default configuration file:</li></ol>
<li value="1" class="p_Normal">Переместите конфигурационный файл по умолчанию:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;mv&nbsp;/etc/haproxy/haproxy.cfg{,.original}</span></p>
<ol style="list-style-type:upper-roman" start="2">
<li value="2" class="p_Normal">Create and open a new configuration file for editing:</li></ol>
<li value="2" class="p_Normal">Создайте и откройте для редактирования новый конфигурационный файл с помощью команды:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;nano&nbsp;/etc/haproxy/haproxy.cfg</span></p>
<p class="p_Normal"><a class="dropdown-toggle" style="font-style: normal; font-weight: normal; color: #000000; background-color: transparent; text-decoration: none;" href="javascript:HMToggle('toggle','TOGGLE0186A1')">Example of basic HAProxy configuration for the haproxy.cfg file</a></p>
<div id="TOGGLE0186A1" class="dropdown-toggle-body" style="text-align: left; text-indent: 0; line-height: 1.80; padding: 0 0 0 0; margin: 0 0 0 0;"><table style="border:none; border-spacing:0;">
<p class="p_Normal"><a class="dropdown-toggle" style="font-style: normal; font-weight: normal; color: #000000; background-color: transparent; text-decoration: none;" href="javascript:HMToggle('toggle','TOGGLE0186A1')">Пример базовой конфигурационный HAProxy для файла haproxy.cfg</a></p>
<div id="TOGGLE0186A1" class="dropdown-toggle-body" style="text-align: left; text-indent: 0; padding: 0 0 0 0; margin: 0 0 0 0;"><table style="border:none; border-spacing:0;">
<tr>
<td style="vertical-align:top; padding:0; border:none"><p class="p_Normal">Basic configuration section describes the parameters of the HAProxy server operation: operating mode, timeouts, connection count, enabling the web interface, etc.</p>
<p class="p_Normal">The example provides the necessary configuration for the HAProxy server operation. For more details on the used parameters, refer to the official <a href="http://docs.haproxy.org/" class="weblink">HAProxy Documentation</a>.</p>
<td style="vertical-align:top; padding:0; border:none"><p class="p_Normal">Базовая часть описывает параметры работы сервера HAProxy: режим работы, таймауты, количество подключений, включение web‑интерфейса и т.д. В примере приведена необходимая конфигурация параметров для работы сервера HAProxy. Подробнее об используемых параметрах читайте в официальной документации <a href="http://docs.haproxy.org/" class="weblink">HAProxy Documentation</a>.</p>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">global</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;&nbsp;&nbsp;maxconn&nbsp;100000</span><br />
<span class="f_CodeExample">&nbsp;&nbsp;&nbsp;&nbsp;log&nbsp;/dev/log&nbsp;local0</span><br />
@ -299,13 +300,13 @@
</table>
</div>
<ol style="list-style-type:upper-roman" start="3">
<li value="3" class="p_Normal">Restart HAProxy:</li></ol>
<li value="3" class="p_Normal">Перезапустите HAProxy:</li></ol>
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">sudo&nbsp;systemctl&nbsp;restart&nbsp;haproxy</span></p>
<h2 class="p_Heading2"><a id="add-configurations" class="hmanchor"></a><span class="f_Heading2">Step 6: Add configurations for BRIX components balancing</span></h2>
<p class="p_Normal">BRIX component configurations are added to the <code><b>haproxy.cfg</b></code> file as needed. </p>
<p class="p_Normal">Depending on the architecture being set up, add configurations:</p>
<h2 class="p_Heading2"><a id="add-configurations" class="hmanchor"></a><span class="f_Heading2">Шаг 6. Добавление конфигураций для балансировки компонентов ELMA365</span></h2>
<p class="p_Normal">Конфигурации компонентов ELMA365 добавляются в файл <code><b>haproxy.cfg</b></code> по необходимости. </p>
<p class="p_Normal">В зависимости от выстраиваемой архитектуры добавьте конфигурации:</p>
<ul style="list-style-type:disc">
<li class="p_Normal"><a href="haproxy-postgresql.html" class="topiclink">HAProxy for PostgreSQL</a>.</li><li class="p_Normal"><a href="haproxy-rabbitmq.html" class="topiclink">HAProxy for RabbitMQ</a>.</li><li class="p_Normal"><a href="haproxy-redis.html" class="topiclink">HAProxy for Redis Sentinel</a>.</li><li class="p_Normal"><a href="haproxy-s3-minio.html" class="topiclink">HAProxy for S3 Minio</a>.</li><li class="p_Normal"><a href="haproxy-web-elma365.html" class="topiclink">HAProxy for BRIX web</a>.</li><li class="p_Normal"><a href="haproxy-docs-server.html" class="topiclink">HAProxy for document server</a>.</li></ul>
<li class="p_Normal"><a href="haproxy-postgresql.html" class="topiclink">HAProxy для PostgreSQL</a>;</li><li class="p_Normal"><a href="haproxy-rabbitmq.html" class="topiclink">HAProxy для RabbitMQ</a>;</li><li class="p_Normal"><a href="haproxy-redis.html" class="topiclink">HAProxy для Redis Sentinel</a>;</li><li class="p_Normal"><a href="haproxy-s3-minio.html" class="topiclink">HAProxy для S3 Minio</a>;</li><li class="p_Normal"><a href="haproxy-web-elma365.html" class="topiclink">HAProxy для web ELMA365</a>;</li><li class="p_Normal"><a href="haproxy-docs-server.html" class="topiclink">HAProxy для сервера документов</a>.</li></ul>
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@ -322,7 +323,7 @@
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