Overview
Nagios is an application that monitors, reports and optionally can act on events on the network.
This document describes the process of installing nagious 2.8 on SME 7.1.x.
Software Requirements
- nagios-2.8-1.el4.rf.i386.rpm – This is the main nagios software package.
- nagios-plugins-1.4.5-1.el4.rf.i386.rpm – This contains the plugins required by nagios. Without the plugins nagios will not be able to monitor anything.
- gd-2.0.28-4.4E.1.i386.rpm – Required by nagios 2.8
- xorg-x11-libs-6.8.2-1.EL.13.37.i386.rpm – Required by gd
- fontconfig-2.2.3-7.centos4.i386.rpm – Required by xorg-x11-libs
- xorg-x11-Mesa-libGL-6.8.2-1.EL.13.37.i386.rpm – Required by xorg-x11-libs
- fping-2.4-1.b2.2.el4.rf.i386.rpm – Required by nagios-plugins
- perl-Net-SNMP-5.2.0-1.2.el4.rf.noarch.rpm – Required by nagios-plugins
- perl-Crypt-DES-2.05-3.2.el4.rf.i386.rpm – Required by perl-Net-SNMP
Installation Procedure
- Create an Information Bay for nagios
In server-manager create an information bay called ‘nagios’ with the following permissions:
Information bay name nagios Description Group User access via file sharing or user ftp Public access via web or anonymous ftp Execution of dynamic content (CGI, PHP, SSI)
- Install nagios
The « character is a line continuation character and should not be included in the command.
#wget ftp://ftp.nluug.nl/pub/os/Linux/distr/CentOS/«
4.4/os/x86_64/CentOS/RPMS/gd-2.0.28-4.4E.1.i386.rpm
#wget http://isoredirect.centos.org/centos/4/os/i386/«
CentOS/RPMS/xorg-x11-libs-6.8.2-1.EL.13.37.i386.rpm
#wget http://isoredirect.centos.org/centos/4/os/i386/«
CentOS/RPMS/fontconfig-2.2.3-7.centos4.i386.rpm
#wget http://isoredirect.centos.org/centos/4/os/i386/CentOS/«
RPMS/xorg-x11-Mesa-libGL-6.8.2-1.EL.13.37.i386.rpm
#wget ftp://rpmfind.net/linux/dag/redhat/el4/en/i386/«
dag/RPMS/fping-2.4-1.b2.2.el4.rf.i386.rpm
#wget http://dag.wieers.com/rpm/packages/«
perl-Net-SNMP/perl-Net-SNMP-5.2.0-1.2.el4.rf.noarch.rpm
#wget http://dag.wieers.com/rpm/packages/«
perl-Crypt-DES/perl-Crypt-DES-2.05-3.2.el4.rf.i386.rpm
#rpm -ivh fontconfig-2.2.3-7.centos4.i386.rpm «
xorg-x11-Mesa-libGL-6.8.2-1.EL.13.37.i386.rpm xorg-x11-libs-6.8.2-1.EL.13.37.i386.rpm
#rpm -ivh nagios-2.8-1.el4.rf.i386.rpm
#rpm -ivh fping-2.4-1.b2.2.el4.rf.i386.rpm
#rpm -ivh perl-Crypt-DES-2.05-3.2.el4.rf.i386.rpm perl-Net-SNMP-5.2.0-1.2.el4.rf.noarch.rpm
#rpm -ivh nagios-plugins-1.4.5-1.el4.rf.i386.rpm
- Configure nagios to use the ibay
I prefer to place all the nagios data in the ibay. If your requirements are not the same you can skip this step.
Edit the nagios configuration files in /etc/nagios
#vi /etc/nagios/nagios.cfgChange the following lines:
object_cache_file=/home/e-smith/files/ibays/nagios/files/objects.cache
status_file=/home/e-smith/files/ibays/nagios/files/status.dat
command_file=/home/e-smith/files/ibays/nagios/files/rw/nagios.cmd
comment_file=/home/e-smith/files/ibays/nagios/files/comments.dat
downtime_file=/home/e-smith/files/ibays/nagios/files/downtime.dat
temp_file=/home/e-smith/files/ibays/nagios/files/nagios.tmp#vi /etc/nagios/cgi.cfg
Change the following lines:
physical_html_path=/home/e-smith/files/ibays/nagios/html
use_authentication=0Note: Setting use_authentication=0 disables authentication. It is sufficient for our needs. If you require authentication then use_authentication should not be changed. Setting up authentication is beyond the scope of this document
- Edit /etc/nagios/localhost.cfg
Define all the hosts, hostgroups, services, etc. according to your requirements.
- Copy the CGI scripts to the ibay
#cp -r /usr/lib/nagios/cgi/* /home/e-smith/files/ibays/nagios/cgi-bin/.
- Copy the web files to the ibay
#cp -r /usr/share/nagios/* /home/e-smith/files/ibays/nagios/html/.
- Configure nagios to start in runlevel 7
#ln -s /etc/rc.d/init.d/nagios /etc/rc7.d/S97nagios
- Start nagios
#chmod 777 /home/e-smith/files/ibays/nagios/files
#/etc/rc.d/init.d/nagios startThis should start the nagios service. Fix any errors in the configuration files if the startup returns any errors. It is also good to have a look at the nagios log file /var/log/nagios/nagios.log. Any errors during the operation of nagios such as missing plugins, etc. will be logged in the log file
- Connect to the nagios web
Open your browser and browse to http://your.server/nagios