Installing NRPE - Revision history

Tykling: /* NRPE installation */

2010-01-17T21:28:43Z

NRPE installation

← Older revision		Revision as of 21:28, 17 January 2010
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	== NRPE installation ==		== NRPE installation ==
	To install and configure NRPE on a FreeBSD server I first install the NRPE port:		To install and configure NRPE on a FreeBSD server to monitor it with Nagios, I first install the NRPE port:
	<pre>		<pre>
	sudo portmaster /usr/ports/net-mgmt/nrpe2		sudo portmaster /usr/ports/net-mgmt/nrpe2

Tykling at 21:27, 17 January 2010

2010-01-17T21:27:52Z

@@ Line 1: / Line 1: @@
 [[category:nagios]]
 To install and configure NRPE on a FreeBSD server I first install the NRPE port:
 <pre>
@@ Line 7: / Line 18: @@
 I always use SSL for NRPE even on LAN, so I check the SSL option and continue. If I am installing NRPE in a jail I remember to check "Compilation within jail(8)" in the options for <code>/usr/ports/net-mgmt/nagios-plugins</code> which will be installed as a dependency of <code>/usr/ports/net-mgmt/nrpe2</code>.
 After the installation is complete I copy the sample config and edit it:
 <pre>

Tykling at 20:14, 17 January 2010

2010-01-17T20:14:15Z

← Older revision		Revision as of 20:14, 17 January 2010
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	or something like that. I normally have screen running with at least 4-5 tabs open and I don't want Nagios to throw a warning whenever I log on to the machine :)		or something like that. I normally have screen running with at least 4-5 tabs open and I don't want Nagios to throw a warning whenever I log on to the machine :)

			If I am installing NRPE in a jail with only a root partition there is no reason to monitor <code>/usr</code> <code>/var</code> and <code>/tmp</code> as well - so in a jail I delete the following lines from <code>/usr/local/etc/nrpe.cfg</code>:
			<pre>
			command[check_var]=/usr/local/libexec/nagios/check_disk -w 20% -c 10% -p /var
			command[check_tmp]=/usr/local/libexec/nagios/check_disk -w 20% -c 10% -p /tmp
			command[check_usr]=/usr/local/libexec/nagios/check_disk -w 20% -c 10% -p /usr
			</pre>

	I also like monitor the installed ports on a FreeBSD server for security vulnerabilities, there is a [[Check_ports_-_NRPE_portaudit_check\|seperate article]] on how to enable that. There is a bunch of other things that NRPE can do aside from the default things in the sample config that the port installs - the ones I have documented are all in the [[:category:Nagios\|Nagios category]].		I also like monitor the installed ports on a FreeBSD server for security vulnerabilities, there is a [[Check_ports_-_NRPE_portaudit_check\|seperate article]] on how to enable that. There is a bunch of other things that NRPE can do aside from the default things in the sample config that the port installs - the ones I have documented are all in the [[:category:Nagios\|Nagios category]].

Tykling at 19:23, 17 January 2010

2010-01-17T19:23:45Z

← Older revision		Revision as of 19:23, 17 January 2010
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	</pre>		</pre>

	I always use SSL for NRPE even on LAN, so I check the SSL option and continue. If I am installing NRPE in a jail I remember to check "Compilation within jail(8)" in the options for /usr/ports/net-mgmt/nagios-plugins which will be installed as a dependency of /usr/ports/net-mgmt/nrpe2.		I always use SSL for NRPE even on LAN, so I check the SSL option and continue. If I am installing NRPE in a jail I remember to check "Compilation within jail(8)" in the options for <code>/usr/ports/net-mgmt/nagios-plugins</code> which will be installed as a dependency of <code>/usr/ports/net-mgmt/nrpe2</code>.

	After the installation is complete I copy the sample config and edit it:		After the installation is complete I copy the sample config and edit it:

Tykling at 19:11, 17 January 2010

2010-01-17T19:11:59Z

← Older revision		Revision as of 19:11, 17 January 2010
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	or something like that. I normally have screen running with at least 4-5 tabs open and I don't want Nagios to throw a warning whenever I log on to the machine :)		or something like that. I normally have screen running with at least 4-5 tabs open and I don't want Nagios to throw a warning whenever I log on to the machine :)

	I also like monitor the installed ports on a FreeBSD server for security vulnerabilities, there is a [[~~NRPE_~~-~~_check_ports~~\|seperate article]] on how to enable that. There is a bunch of other things that NRPE can do aside from the default things in the sample config that the port installs - the ones I have documented are all in the [[:category:Nagios\|Nagios category]].		I also like monitor the installed ports on a FreeBSD server for security vulnerabilities, there is a [[Check_ports_-_NRPE_portaudit_check\|seperate article]] on how to enable that. There is a bunch of other things that NRPE can do aside from the default things in the sample config that the port installs - the ones I have documented are all in the [[:category:Nagios\|Nagios category]].

	I then enable NRPE in rc.conf:		I then enable NRPE in rc.conf:

Tykling at 19:01, 17 January 2010

2010-01-17T19:01:21Z

← Older revision		Revision as of 19:01, 17 January 2010
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			[[category:nagios]]
	To install and configure NRPE on a FreeBSD server I first install the NRPE port:		To install and configure NRPE on a FreeBSD server I first install the NRPE port:
	<pre>		<pre>

Tykling: Created page with 'To install and configure NRPE on a FreeBSD server I first install the NRPE port:

 sudo portmaster /usr/ports/net-mgmt/nrpe2

I always use SSL for NRPE even on LAN, so…'

2010-01-17T19:01:00Z

Created page with 'To install and configure NRPE on a FreeBSD server I first install the NRPE port: <pre> sudo portmaster /usr/ports/net-mgmt/nrpe2 </pre> I always use SSL for NRPE even on LAN, so…'

New page

To install and configure NRPE on a FreeBSD server I first install the NRPE port:
<pre>
sudo portmaster /usr/ports/net-mgmt/nrpe2
</pre>

I always use SSL for NRPE even on LAN, so I check the SSL option and continue. If I am installing NRPE in a jail I remember to check "Compilation within jail(8)" in the options for /usr/ports/net-mgmt/nagios-plugins which will be installed as a dependency of /usr/ports/net-mgmt/nrpe2.

After the installation is complete I copy the sample config and edit it:
<pre>
sudo cp /usr/local/etc/nrpe.cfg-sample /usr/local/etc/nrpe.cfg
sudo ee /usr/local/etc/nrpe.cfg
</pre>

The only options I change are ''allowed_hosts'' and I also change the line:
<pre>
command[check_users]=/usr/local/libexec/nagios/check_users -w 5 -c 10
</pre>

into:

<pre>
command[check_users]=/usr/local/libexec/nagios/check_users -w 10 -c 20
</pre>

or something like that. I normally have screen running with at least 4-5 tabs open and I don't want Nagios to throw a warning whenever I log on to the machine :)

I also like monitor the installed ports on a FreeBSD server for security vulnerabilities, there is a [[NRPE_-_check_ports|seperate article]] on how to enable that. There is a bunch of other things that NRPE can do aside from the default things in the sample config that the port installs - the ones I have documented are all in the [[:category:Nagios|Nagios category]].

I then enable NRPE in rc.conf:
<pre>
sudo ee /etc/rc.conf
nrpe2_enable="YES"
</pre>

..and start NRPE:
<pre>
sudo /usr/local/etc/rc.d/nrpe2 start
</pre>

If I need to open up a firewall to allow the Nagios server to reach NRPE on this server, I allow incoming traffic to TCP port 5666 from the Nagios server to reach the machine running NRPE.

I then go add the machine to the Nagios server configs with the relevant hostgroups and/or services, restart Nagios, and go check the web interface and wait to see if everything is green, and if not, I probably need to adjust anything else in nrpe.cfg on the machine being monitored (or maybe there is actually a problem I need to go fix).