How to Install Nagios Monitoring Server on CentOS 6.5

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Nagios is one of the alternate open source computer, network and infrastructure monitoring system that will help organizations to identify and resolve IT infrastructure problems before they affect critical business processes. Nagios provides host, service and network monitoring capabilities and was designed with scalability and flexibility. With complete monitoring and alerting, nagios allows you to detect and repair problems and mitigate future issues before they affect end-users and customers. This post will show you how you can install Nagios monitoring server on CentOS 6.5

1. Prepare and download EPEL repository :

[[email protected] ~]# wget dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

2. Install EPEL repository :

[[email protected] ~]# rpm -Uvh epel-release-6-8.noarch.rpm
warning: epel-release-6-8.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing...                ########################################### [100%]
1:epel-release           ########################################### [100%]

3. Install Nagis packages, php and httpd web server :

[[email protected] ~]# yum install nagios nagios-plugins-all nagios-plugins-nrpe nrpe php httpd -y

Example:

[[email protected] ~]# yum install nagios nagios-plugins-all nagios-plugins-nrpe nrpe php httpd -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * Webmin: download.webmin.com
 * base: mirror.upsi.edu.my
 * epel: mirror.smartmedia.net.id
 * extras: mirror.upsi.edu.my
 * updates: mirror.upsi.edu.my
Setting up Install Process
Package php-5.3.3-27.el6_5.x86_64 already installed and latest version
Package httpd-2.2.15-29.el6.centos.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package nagios.x86_64 0:3.5.1-1.el6 will be installed
--> Processing Dependency: user(nagios) for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: user(nagios) for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: nagios-common for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: mailx for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: group(nagios) for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: group(nagios) for package: nagios-3.5.1-1.el6.x86_64
--> Processing Dependency: libgd.so.2()(64bit) for package: nagios-3.5.1-1.el6.x86_64
---> Package nagios-plugins-all.x86_64 0:1.4.16-10.el6 will be installed
--> Processing Dependency: nagios-plugins-wave for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-users for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ups for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-time for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-tcp for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-swap for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ssh for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-snmp for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-smtp for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-sensors for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-rpc for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-real for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-procs for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ping for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-pgsql for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-overcr for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-oracle for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-nwstat for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ntp-perl for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ntp for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-nt for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-nagios for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-mysql for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-mrtgtraf for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-mrtg for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-mailq for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-log for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-load for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ldap for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ircd for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-ide_smart for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-icmp for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-http for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-hpjd for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-game for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-fping for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-flexlm for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-file_age for package: nagios-plugins-all-1.4.16-10.el6.x86_64
--> Processing Dependency: nagios-plugins-dummy for package: nagios-plugins-all-1.4.16-10.el6.x86_64
..
..
..

Installed:
  nagios.x86_64 0:3.5.1-1.el6                     nagios-plugins-all.x86_64 0:1.4.16-10.el6
  nagios-plugins-nrpe.x86_64 0:2.14-5.el6         nrpe.x86_64 0:2.14-5.el6

Dependency Installed:
  dmidecode.x86_64 1:2.11-2.el6                    fontconfig.x86_64 0:2.8.0-3.el6
  fping.x86_64 0:2.4b2-10.el6                      gd.x86_64 0:2.0.35-11.el6
  libgssglue.x86_64 0:0.1-11.el6                   libtalloc.x86_64 0:2.0.7-2.el6
  libtdb.x86_64 0:1.2.10-1.el6                     libtevent.x86_64 0:0.9.18-3.el6
  libtirpc.x86_64 0:0.2.1-6.el6_4                  lm_sensors.x86_64 0:3.1.1-17.el6
  mailx.x86_64 0:12.4-7.el6                        nagios-common.x86_64 0:3.5.1-1.el6
  nagios-plugins.x86_64 0:1.4.16-10.el6            nagios-plugins-breeze.x86_64 0:1.4.16-10.el6
  nagios-plugins-by_ssh.x86_64 0:1.4.16-10.el6     nagios-plugins-cluster.x86_64 0:1.4.16-10.el6
  nagios-plugins-dhcp.x86_64 0:1.4.16-10.el6       nagios-plugins-dig.x86_64 0:1.4.16-10.el6
  nagios-plugins-disk.x86_64 0:1.4.16-10.el6       nagios-plugins-disk_smb.x86_64 0:1.4.16-10.el6
  nagios-plugins-dns.x86_64 0:1.4.16-10.el6        nagios-plugins-dummy.x86_64 0:1.4.16-10.el6
  nagios-plugins-file_age.x86_64 0:1.4.16-10.el6   nagios-plugins-flexlm.x86_64 0:1.4.16-10.el6
  nagios-plugins-fping.x86_64 0:1.4.16-10.el6      nagios-plugins-game.x86_64 0:1.4.16-10.el6
  nagios-plugins-hpjd.x86_64 0:1.4.16-10.el6       nagios-plugins-http.x86_64 0:1.4.16-10.el6
  nagios-plugins-icmp.x86_64 0:1.4.16-10.el6       nagios-plugins-ide_smart.x86_64 0:1.4.16-10.el6
  nagios-plugins-ircd.x86_64 0:1.4.16-10.el6       nagios-plugins-ldap.x86_64 0:1.4.16-10.el6
  nagios-plugins-load.x86_64 0:1.4.16-10.el6       nagios-plugins-log.x86_64 0:1.4.16-10.el6
  nagios-plugins-mailq.x86_64 0:1.4.16-10.el6      nagios-plugins-mrtg.x86_64 0:1.4.16-10.el6
  nagios-plugins-mrtgtraf.x86_64 0:1.4.16-10.el6   nagios-plugins-mysql.x86_64 0:1.4.16-10.el6
  nagios-plugins-nagios.x86_64 0:1.4.16-10.el6     nagios-plugins-nt.x86_64 0:1.4.16-10.el6
  nagios-plugins-ntp.x86_64 0:1.4.16-10.el6        nagios-plugins-ntp-perl.x86_64 0:1.4.16-10.el6
  nagios-plugins-nwstat.x86_64 0:1.4.16-10.el6     nagios-plugins-oracle.x86_64 0:1.4.16-10.el6
  nagios-plugins-overcr.x86_64 0:1.4.16-10.el6     nagios-plugins-perl.x86_64 0:1.4.16-10.el6
  nagios-plugins-pgsql.x86_64 0:1.4.16-10.el6      nagios-plugins-ping.x86_64 0:1.4.16-10.el6
  nagios-plugins-procs.x86_64 0:1.4.16-10.el6      nagios-plugins-real.x86_64 0:1.4.16-10.el6
  nagios-plugins-rpc.x86_64 0:1.4.16-10.el6        nagios-plugins-sensors.x86_64 0:1.4.16-10.el6
  nagios-plugins-smtp.x86_64 0:1.4.16-10.el6       nagios-plugins-snmp.x86_64 0:1.4.16-10.el6
  nagios-plugins-ssh.x86_64 0:1.4.16-10.el6        nagios-plugins-swap.x86_64 0:1.4.16-10.el6
  nagios-plugins-tcp.x86_64 0:1.4.16-10.el6        nagios-plugins-time.x86_64 0:1.4.16-10.el6
  nagios-plugins-ups.x86_64 0:1.4.16-10.el6        nagios-plugins-users.x86_64 0:1.4.16-10.el6
  nagios-plugins-wave.x86_64 0:1.4.16-10.el6       net-snmp-utils.x86_64 1:5.5-49.el6
  ntp.x86_64 0:4.2.6p5-1.el6.centos                ntpdate.x86_64 0:4.2.6p5-1.el6.centos
  openssh-clients.x86_64 0:5.3p1-94.el6            qstat.x86_64 0:2.11-9.20080912svn311.el6
  rpcbind.x86_64 0:0.2.0-11.el6                    samba-client.x86_64 0:3.6.9-167.el6_5
  samba-common.x86_64 0:3.6.9-167.el6_5            samba-winbind.x86_64 0:3.6.9-167.el6_5
  samba-winbind-clients.x86_64 0:3.6.9-167.el6_5

Complete!

4. Make httpd and nagios software auto start at boot :

[[email protected] ~]# chkconfig httpd on
[[email protected] ~]# chkconfig nagios on

5. Start httpd and nagios software :

[[email protected] ~]# service httpd start
Starting httpd:                                            [  OK  ]
[[email protected] ~]# service nagios start
Starting nagios: done.

6. Set Nagios Admin Panel Password:

[[email protected] ~]# htpasswd -c /etc/nagios/passwd nagiosadmin
New password:
Re-type new password:
Adding password for user nagiosadmin

7. Navigate over to your IP address http://IPADDRESS/nagios and login using above “nagiosadmin” > However, you still able to change /etc/nagios/cgi.cfg and redefine authorized admin anytime later.

[[email protected] ~]# vi /etc/nagios/cgi.cfg
..
..
authorized_for_system_information=nagiosadmin
..
..

2 Comments

  1. Gilbert
    • SHAIK CHANDBASHA

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