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<div class="section" id="nagios">
<h1>Nagios<a class="headerlink" href="#nagios" title="Permalink to this headline"></a></h1>
<p>If you wish to set up monitoring for your instance, you can do so with our Nagios Module:</p>
<p><a class="reference external" href="https://github.com/cited/nagios-webmin-module">https://github.com/cited/nagios-webmin-module</a></p>
<p>Nagios and nrpe client are produced by <a class="reference external" href="https://www.nagios.com/">Nagios</a></p>
<p><a class="reference external" href="https://exchange.nagios.org/">Nagios Exchange</a> provides plugins, addons, docs, extensions and other tools</p>
<p>Below are some of the main sections for setting up basic monitoring.</p>
<p>nagiso.cfg to register our geosuite.cfg file</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp"># </span>You<span class="w"> </span>can<span class="w"> </span>specify<span class="w"> </span>individual<span class="w"> </span>object<span class="w"> </span>config<span class="w"> </span>files<span class="w"> </span>as<span class="w"> </span>shown<span class="w"> </span>below:
<span class="go">cfg_file=/usr/local/nagios/etc/objects/commands.cfg</span>
<span class="gp"># </span>Definitions<span class="w"> </span><span class="k">for</span><span class="w"> </span>monitoring<span class="w"> </span>the<span class="w"> </span><span class="nb">local</span><span class="w"> </span><span class="o">(</span>Linux<span class="o">)</span><span class="w"> </span>host
<span class="go">cfg_file=/usr/local/nagios/etc/objects/geosuite.cfg</span>
</pre></div>
</div>
<p>commands.cfg</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp"># </span>Monitor<span class="w"> </span>GeoServer:<span class="w"> </span>Monitor<span class="w"> </span>web<span class="w"> </span>page<span class="w"> </span><span class="k">in</span><span class="w"> </span>addition<span class="w"> </span>to<span class="w"> </span>Tomcat<span class="w"> </span>to<span class="w"> </span>insure<span class="w"> </span>GeoServer<span class="w"> </span>is<span class="w"> </span>accessible
<span class="go">define command {</span>
<span class="go"> command_name geoserver_URL</span>
<span class="go"> command_line /usr/local/nagios/libexec/check_http_content -U &quot;http://domain.com/geoserver/web/&quot; -m &quot;Welcome&quot;</span>
<span class="go">}</span>
<span class="gp"># </span>Monitor<span class="w"> </span>PostgreSQL<span class="w"> </span>using<span class="w"> </span>the<span class="w"> </span>check_postgres.pl<span class="w"> </span>plugin:
<span class="go">define command {</span>
<span class="go"> command_name check_postgres_connection</span>
<span class="go"> command_line /usr/local/nagios/libexec/check_postgres.pl --dbservice=$HOSTADDRESS$ --action=connection</span>
<span class="go"> }</span>
<span class="gp"># </span>Monitor<span class="w"> </span>disk<span class="w"> </span>usage<span class="w"> </span>using<span class="w"> </span>custom<span class="w"> </span>script,<span class="w"> </span>check_diskspace<span class="w"> </span><span class="o">(</span>script<span class="w"> </span>is<span class="w"> </span>below<span class="o">)</span>
<span class="go">define command {</span>
<span class="go"> command_name check_diskspace</span>
<span class="go"> command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c check_diskspace</span>
</pre></div>
</div>
<p>geosuite.cfg file</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp"># </span>Using<span class="w"> </span>Slack<span class="w"> </span>plugin<span class="w"> </span>to<span class="w"> </span>get<span class="w"> </span>notifications<span class="w"> </span>on<span class="w"> </span>Slack<span class="w"> </span>channel
<span class="gp"># </span>Using<span class="w"> </span>check_diskspace<span class="w"> </span><span class="o">(</span>see<span class="w"> </span>next<span class="w"> </span>section<span class="o">)</span>
<span class="go">define host {</span>
<span class="go"> use linux-server</span>
<span class="go"> host_name geosuite</span>
<span class="go"> alias geosuite</span>
<span class="go"> address 192.1.2.3</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description PING</span>
<span class="go"> check_command check_ping!100.0,20%!500.0,60%</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slack</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description Disk Space</span>
<span class="go"> check_command check_diskspace</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slack</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description Check SSH</span>
<span class="go"> check_command check_ssh!-p 48316</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slack</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description Check HTTP</span>
<span class="go"> check_command check_http</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slack</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description Check PostgreSQL</span>
<span class="go"> check_command check_postgres_connection</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slack</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
<span class="go">define service {</span>
<span class="go"> host_name geosuite</span>
<span class="go"> service_description GeoServer Status</span>
<span class="go"> check_command geoserver_URL</span>
<span class="go"> max_check_attempts 2</span>
<span class="go"> check_interval 2</span>
<span class="go"> retry_interval 2</span>
<span class="go"> check_period 24x7</span>
<span class="go"> check_freshness 1</span>
<span class="go"> contact_groups admins,slackmins</span>
<span class="go"> notification_interval 2</span>
<span class="go"> notification_period 24x7</span>
<span class="go"> notifications_enabled 1</span>
<span class="go"> register 1</span>
<span class="go">}</span>
</pre></div>
</div>
<p>You can find the PostgreSQL monitor plugin on Nagios Exchange.</p>
<p>For disk usage monitoring, you can use our check_diskspace script below:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">#</span>!/bin/bash
<span class="go">chkuse=$(df -h |grep &#39;/&#39; |grep -v &#39;VolGroup&#39; |awk &#39;{if ($6 == &quot;&quot;) print $4,$5; else print $5,$6;}&#39;)</span>
<span class="go">echo &quot;${chkuse}&quot; | grep -o &#39;[0-9]*&#39; | while read mounts</span>
<span class="go">do</span>
<span class="go"> if [ $mounts -gt 98 ]</span>
<span class="go"> then</span>
<span class="go"> echocrit=$(echo &quot;${chkuse}&quot; | grep $mounts)</span>
<span class="go"> echo $crit &quot;CRITICAL&quot;</span>
<span class="go"> exit 2</span>
<span class="go"> elif [ $mounts -gt 95 ]</span>
<span class="go"> then</span>
<span class="go"> echowarn=$(echo &quot;${chkuse}&quot; | grep $mounts)</span>
<span class="go"> echo $warn &quot;WARNING&quot;</span>
<span class="go"> exit 1</span>
<span class="go"> fi</span>
<span class="go">done</span>
<span class="go">wait</span>
<span class="go">rc=$?</span>
<span class="go">if [ $rc -eq 0 ]; then</span>
<span class="go"> echo &quot;OK&quot;</span>
<span class="go">fi</span>
<span class="go">exit ${rc}</span>
</pre></div>
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