This article will help you to install and configure Nagios monitoring tool in redhat linux or other redhat distributions like fedora, centos etc.
Nagios Installation :
Installing packages. Apache, PHP, GCC & GD
Installing Apache web server:
#yum -y install httpd*
set hostname in FQDN
#service httpd on
Installing PHP, GCC and GD:
#yum -y install php*
#yum -y install gcc*
#yum -y install gd*
Getting the package:
Get the latest packages from net. Mov it to some directory and untar them.
#wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.0.tar.gz
#mv nagios-3.2.0.tar.gz /usr/local/src
#tar xvf nagios-3.2.0.tar.gz
#wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.14.tar.gz
#mv nagios-plugins-1.4.14.tar.gz/usr/local/src
#tar xvf nagios-plugins-1.4.14.tar.gz
Adding nagios user and setting password for that user:
#useradd nagios
#passwd nagios
usermod -a -G nagios apache //To permit the commands through web interface.
Configuration of Nagios:
cd /usr/local/src/nagios-3.2.0
./configure
make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf
Admin account setting for nagios:
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin /passwd for web interface
give passwd
service httpd restart
Nagios Plugin installation:
install nagios - pluggin
cd /usr/local/src/nagios-plugins-1.4.14
./configure
make
make install
Creating entry in /etc/init.d/:
chkconfig --add nagios
chkconfig nagios on
Checking the configuration:
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
Nagios Alert Plugin - Mozilla Addon:
Name : Nagios Checker
[give name and url]
Configuring remotehost in nagios:
cp /usr/local/nagios/etc/objects/localhost.cfg /usr/local/nagios/etc/objects/remotehost.cfg
[comment the hostgroup entries in order to prevent duplicate entries]
[change the localhost entries to the remote machine hostname and IP address.]
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