How to install Nagios from repo Fedora/Centos/SL

Nagios is one of the most powerful open source monitoring tool, its giving the opportunity for monitoring all OS and devices , in our previous posts, we did show you how to install Nagios from source in Fedora and CentOS, today we will see how to install it directly from yum in Fedora/Centos/SL(Scientific Linux) in easy steps.


Install Nagios<font size=4></font>

yum install nagios*
Now Start Nagios
/etc/init.d/nagios start
Start nagios on boot
chkconfig nagios on Start httpd apache

/etc/init.d/httpd start
Start apache on boot chkconfig httpd on
Make Nagios admin password
htpasswd -c /etc/nagios/passwd nagiosadmin
check the nagios.conf file in the apache conf.d directory
/etc/httpd/conf.d/nagios.conf
Disable SELinux:
# vim /etc/selinux/config
SELINUX=disabled
# reboot
Check if nagios users and groups are added
# groupadd nagios
# adduser nagios -g nagios
# passwd nagios
# usermod -G nagios nagios
# usermod -G apache,nagios apache
Check nagios confif with
nagios -v /etc/nagios/nagios.cfg
Checking obsessive compulsive processor commands... Checking misc settings... Total Warnings: 0 Total Errors: 0
Now start nagios and report if worked for you.

http://ip/nagios and login with your nagiosadmin user already created