Icinga (Monitoring Solution) Installation And Configuration On CentOS - Page 2

Want to support HowtoForge? Become a subscriber!
 
Submitted by iron_michael86 (Contact Author) (Forums) on Wed, 2011-01-19 18:05. ::

Installation of Nagios plugins for monitoring

1. Download the Nagios plugin and compile the same:

[root@sunil software]# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.15.tar.gz
[root@sunil software]# tar -zxvf nagios-plugins-1.4.15.tar.gz
[root@sunil software]# cd nagios-plugins-1.4.15
[root@sunil nagios-plugins-1.4.15]# ./configure --prefix=/opt/icinga/ --with-nagios-user=daemon --with-nagios-group=daemon
[root@sunil nagios-plugins-1.4.15]# make && make install

 

Cutomization of Icinga

Mail alert configuration:

[root@sunil /]# cd /opt/icinga/etc/
[root@suniletc]# vi objects/contacts.cfg

define contact{
contact_nameicingaadmin             ; Short name of user
use     generic-contact         ; Inherit default values from generic-contact template (defined above)
alias Icinga Admin            ; Full name of user
emaildaemon@localhost        ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******
        }

Change the email address from daemon@localhost to your email address test@sunil.cc.

Make sure you had configured smarthost in the CentOS server.

 

To configure smart host in CentOS

[root@suniletc]# rpm -qa|grepsendmail

sendmail-8.13.8-2.el5

[root@suniletc]# vim /etc/mail/sendmail.mc

Disable the following line:

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
dnl#DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

Enable the following line:

dnl define(`SMART_HOST', `smtp.your.provider')dnl

Give your smtp address here - in this case sunil.cc:

define(`SMART_HOST', `smtp.sunil.cc')dnl 

[root@sunil /]#m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
[root@sunil /]#/etc/init.d/sendmail restart

 

Installing Nagios Plugin and nrpe in Ubuntu 192.168.1.40

1. For Ubuntu to be monitored by the Icinga server we need to install Nagios plugin and nrpe:

root@ubuntu10:~# apt-get install gcc*

root@ubuntu10:~#wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.15.tar.gz

root@ubuntu10:~# tar -zxvf nagios-plugins-1.4.15.tar.gz

2. Compiling Nagios plugin:

root@ubuntu10:~# cd nagios-plugins-1.4.15/
root@ubuntu10:~/nagios-plugins-1.4.15# ./configure --with-nagios-user=daemon --with-nagios-group=daemon
root@ubuntu10:~/nagios-plugins-1.4.15# make && make install
root@ubuntu10:~/nagios-plugins-1.4.15# chown -R daemon:daemon /usr/local/nagios/

 

Installation of NRPE (Nagios Remote Plugin Executor)

1. Download and compile NRPE:

root@ubuntu10:~# wget http://prdownloads.sourceforge.net/sourceforge/nagios/nrpe-2.12.tar.gz

root@ubuntu10:~# tar -zxvf nrpe-2.12.tar.gz
root@ubuntu10:~# cd nrpe-2.12/
root@ubuntu10:~/nrpe-2.12# apt-get install openssllibssl-dev
root@ubuntu10:~# make all
root@ubuntu10:~# make install-plugin
root@ubuntu10:~# make install-daemon
root@ubuntu10:~# make install-daemon-config
root@ubuntu10:~/nrpe-2.12# apt-get installxinetd
root@ubuntu10:~# make install-xinetd

2. We need to configure the nrpe as a xinetd service:

root@ubuntu10:~/nrpe-2.12# vim /etc/xinetd.d/nrpe

servicenrpe
{
flags           = REUSE
socket_type     = stream
port            = 5666
wait            = no
user            = daemon
group           = daemon
server          = /usr/local/nagios/bin/nrpe
server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd
log_on_failure  += USERID
disable         = no
only_from       = 127.0.0.1
}

3. Edit by adding the Icinga server IP in only_from:

servicenrpe
{
flags           = REUSE
socket_type     = stream
port            = 5666
wait            = no
user            = daemon
group           = daemon
server          = /usr/local/nagios/bin/nrpe
server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd
log_on_failure  += USERID
disable         = no
only_from       = 127.0.0.1 192.168.1.20
}

4. Now we need to run it as a service by adding the following line:

root@ubuntu10:~# vim /etc/services

nrpe 5666/tcp

5. Restart the xinetd service:

root@ubuntu10:~# /etc/init.d/xinetd restart

6. Check whether nrpe has started:

root@ubuntu10:~# netstat -a |grep nrpe

To check whether Ubuntu is able to communicate with the Icinga server:

root@ubuntu10:~# /usr/local/nagios/libexec/check_nrpe -H localhost

NRPE v2.12

You should be able to get this output.


Please do not use the comment function to ask for help! If you need help, please use our forum.
Comments will be published after administrator approval.