Nagios NRPE remote host monitoring (1)

Nagios NRPE monitoringThe procedure for a remote host is as follows.

Install nrpe on the invigilator

Wget http://nchc.dl.sourceforge.net/sourceforge/nagios/nrpe-2.12.tar.gz

Tar zxvf nrpe-2.12.tar.gz

Cd nrpe-2.12

./Configure -- prefix =/usr/local/nagios

Make all

Make install-plugin

# Install the supervisor in this step

Add a user to the monitored Machine

Groupadd nagios

Useradd-g nagios-d/usr/local/nagios-s/sbin/nologin nagios

Install plugin on the monitored Machine

Wget http://nchc.dl.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.13.tar.gz

Tar zxf nagios-plugins-1.4.13.tar.gz

Cd nagios-plugins-1.4.13

. /Configure -- with-nagios-user = nagios -- with-nagios-group = nagios -- prefix =/usr/local/nagios -- with-ping-command = "/bin/ping" -- with-mysql =/opt/mysql

Make

Make install

# Check whether the playback file has been installed in this directory

Ls/usr/local/nagios/libexec

NRPE installed on the monitored Machine

Wget http://nchc.dl.sourceforge.net/sourceforge/nagios/nrpe-2.12.tar.gz

Tar zxvf nrpe-2.12.tar.gz

Cd nrpe-2.12

./Configure -- prefix =/usr/local/nagios

Make all

Make install-plugin

Make install-daemon

Make install-daemon-config

Chown-R nagios: nagios/usr/local/nagios

Configure NRPE:

Vi/usr/local/nagios/etc/nrpe. cfg

Allowed_hosts = 127.0.0.1, 192.168.1.91

# Nagios monitoring host address or domain name

Modify/etc/hosts. allow to add the ip address of the invigilator.

Echo 'nrpe: 192.168.1.91 '>/etc/hosts. allow

Start the NRPE daemon:

/Usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe. cfg-d

You can add this command to/etc/rc. local to enable automatic startup upon startup.

Echo "/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe. cfg-d">/etc/rc. local

Check whether NRPE is normal:

On the monitored Machine

/Usr/local/nagios/libexec/check_nrpe-H 127.0.0.1

View the corresponding port: netstat-an | grep 5666

Enable Firewall 5666 to allow lan ip addresses or fixed IP addresses to connect

On the monitoring host

/Usr/local/nagios/libexec/check_nrpe-H $ target host address

Both should be able to output the NRPE version: NRPE v2.12

Check monitored services

In the nrpe. cfg file of the monitored end, you can see the following Configuration:

Command [check_load] =/usr/local/nagios/libexec/check_load-w 15,10, 5-c 30,25, 20

This is used to check the CPU load.

Use the following command to customize parameters:

Command [check_load] =/usr/local/nagios/libexec/check_load-w $ ARG1 $-c $ ARG2 $

And enable dont_blame_nrpe = 1

Enabling parameters poses certain security risks.

Restart nrpe

Ps aux | grep nrpe

Kill $ pid

/Usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe. cfg-d