Nagios Doc
NAGIOS DOC I have using RHEL and CentOS 6.4 64 Bit Machines Step 1: Install Required Packages and Dependencies We assume that you have fresh installed CentOS, Red hat or Fedora systems, So our first requirement is to install Apache and PHP first. Use the following commands to complete it. You can find detailed LAMP setup instruction here. Install Packages: # yum install httpd php php-cli gcc glibc glibc-common gd gd-devel net-snmp xinetd openssl* -y Start Services: # service httpd start Step 2: Setup User Accounts Now create a new nagios user account and setup a password to this account # useradd nagios # passwd nagios Step 3: Install Nagios Core Service After installing required dependencies and adding user accounts. Lets start with Nagios core installation. Download latest nagios core service from official site. # cd /opt/ # wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-4.0.8.tar.gz # tar xzf nagios-4.0.8.tar