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swift 08/07/07 20:02:46 |
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|
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Modified: nagios-guide.xml |
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Log: |
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Configuring nrpe |
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|
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Revision Changes Path |
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1.4 xml/htdocs/doc/en/nagios-guide.xml |
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|
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file : http://sources.gentoo.org/viewcvs.py/gentoo/xml/htdocs/doc/en/nagios-guide.xml?rev=1.4&view=markup |
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plain: http://sources.gentoo.org/viewcvs.py/gentoo/xml/htdocs/doc/en/nagios-guide.xml?rev=1.4&content-type=text/plain |
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diff : http://sources.gentoo.org/viewcvs.py/gentoo/xml/htdocs/doc/en/nagios-guide.xml?r1=1.3&r2=1.4 |
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|
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Index: nagios-guide.xml |
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=================================================================== |
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RCS file: /var/cvsroot/gentoo/xml/htdocs/doc/en/nagios-guide.xml,v |
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retrieving revision 1.3 |
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retrieving revision 1.4 |
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diff -u -r1.3 -r1.4 |
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--- nagios-guide.xml 7 Jul 2008 19:04:38 -0000 1.3 |
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+++ nagios-guide.xml 7 Jul 2008 20:02:46 -0000 1.4 |
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@@ -1,5 +1,5 @@ |
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<?xml version="1.0" encoding="UTF-8"?> |
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-<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/nagios-guide.xml,v 1.3 2008/07/07 19:04:38 swift Exp $ --> |
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+<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/nagios-guide.xml,v 1.4 2008/07/07 20:02:46 swift Exp $ --> |
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<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> |
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|
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<guide disclaimer="draft"> |
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@@ -216,8 +216,11 @@ |
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|
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</body> |
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</section> |
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-<section> |
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+</chapter> |
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+<chapter> |
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<title>Installing Client Daemons</title> |
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+<section> |
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+<title>Introduction</title> |
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<body> |
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|
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<p> |
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@@ -239,6 +242,12 @@ |
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We first focus on using the NRPE method as it is the most popular one. |
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</p> |
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|
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+</body> |
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+</section> |
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+<section> |
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+<title>Installing NRPE</title> |
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+<body> |
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+ |
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<p> |
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With NRPE, each remote host runs a daemon (the NRPE deamon) which allows the |
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main Nagios system to query for certain metrics. One can run the NRPE daemon by |
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@@ -264,6 +273,81 @@ |
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# <i>/etc/init.d/nrpe start</i> |
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</pre> |
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|
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+<p> |
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+Finally, we need to configure the main Nagios system to connect to this |
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+particular NRPE instance and request the necessary metrics. To introduce you to |
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+Nagios' object syntax, our next section will cover this a bit more throroughly. |
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+</p> |
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+ |
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+</body> |
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+</section> |
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+<section> |
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+<title>Configuring a Remote Host</title> |
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+<body> |
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+ |
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+<note> |
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+The following hands-on tutorial is an example, used to introduce the user to |
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+Nagios' object model. Do not see this as the "Best Practice" for |
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+configuring Nagios. |
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+</note> |
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+ |
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+<p> |
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+First, edit <path>/etc/nagios/nagios.cfg</path> and place a <c>cfg_dir</c> |
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+directive. This will tell Nagios to read in all object configuration files in |
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+the said directory - in our example, the directory will contain the definitions |
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+for remote systems. |
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+</p> |
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+ |
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+<pre caption="Editing /etc/nagios/nagios.cfg"> |
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+cfg_dir=/etc/nagios/objects/remote |
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+</pre> |
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+ |
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+<p> |
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+Create the directory and start with the first file, |
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+<path>nrpe-command.cfg</path>. In this file, we configure a Nagios command |
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+called <c>check_nrpe</c> which will be used to trigger a plugin (identified by |
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+the placeholder <c>$ARG1$</c>) on the remote system (identified by the |
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+placeholder <c>$HOSTADDRESS$</c>). The <c>$USER1$</c> variable is a default |
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+pointer to the Nagios installation directory (for instance, |
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+<path>/usr/nagios/libexec</path>). |
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+</p> |
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+ |
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+<pre caption="Defining the check_nrpe command"> |
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+# <i>nano /etc/nagios/objects/remote/nrpe-command.cfg</i> |
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+ |
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+define command { |
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+ command_name check_nrpe |
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+ command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ |
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+} |
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+</pre> |
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+ |
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+<p> |
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+Next, create a file <path>nrpe-hosts.cfg</path> where we define the remote |
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+host(s) to monitor. In this example, we define two remote systems: |
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+</p> |
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+ |
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+<pre caption="Defining two remote hosts"> |
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+# <i>nano /etc/nagios/objects/remote/nrpe-hosts.cfg</i> |
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+ |
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+define host { |
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+ use linux-server |
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+ host_name webber |
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+ alias Gentoo Linux Web Server |
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+ address 192.168.2.1 |
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+} |
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+ |
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+define host { |
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+ use linux-server |
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+ host_name isync |
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+ alias Gentoo Linux RSync server |
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+ address 192.168.2.2 |
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+} |
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+</pre> |
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+ |
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+<p> |
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+Finally, define the service(s) you want to check on these hosts. |
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+</p> |
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+ |
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</body> |
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</section> |
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</chapter> |
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-- |
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