Linux - :D All About Open Source :) ......: Install Nagios on CentOS 5

Thursday, July 29, 2010

Install Nagios on CentOS 5

For x86 (32-bit) systems
- rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
  - From Dag Wieers

For x64 (64-bit) systems
- rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
  - From Dag Wieers

Install & Configure Prerequisites

Install Apache
- yum install httpd php gcc glibc glibc-common gd gd-devel

Configure Apache to start on boot
- /sbin/chkconfig --levels 345 httpd on

Configure iptables to allow Apache traffic
- /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
- /etc/init.d/iptables save
- /etc/init.d/iptables restart

Install & Configure Nagios

Install Nagios & Plugins
- yum install nagios nagios-plugins nagios-plugins-setuid

Create the default Nagios web access user & set a password
- htpasswd -c /etc/nagios/htpasswd.users nagiosadmin

Verify default config files
- nagios -v /etc/nagios/nagios.cfg

Start Nagios
- service nagios restart

Start Apache
- service httpd restart

Verify Install

Try logging into your new Nagios installation by going to http://servername/nagios/ and logging in with nagiosadmin and the password you set.

5 comments:

Ashwin said...: Sir, I'm facing an error while starting the nagios service, -

[root@mmcpl phpmyadmin]# service nagios start
nagios is stopped
Configuration validation failed [FAILED]; August 10, 2012 at 3:54 AM
Unknown said...: # cat /etc/sysconfig/selinux
[...]
SELINUX=disabled

# /etc/init.d/nagios restart; August 10, 2012 at 4:50 AM
Ashwin said...: Hello Sir,

I've set off the selinux policy but still receiving the same error....; September 6, 2012 at 3:53 AM
Ashwin said...: Hello Sir,

After setting the selinux policy, still facing the same issue..; September 6, 2012 at 3:56 AM
Unknown said...: if you send me sosreport from same server.

Rajat; September 6, 2012 at 10:22 PM

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