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10th May 2012, 05:23 PM #1OPMemberWebsite's:
host4offshore.comInstallation & Configuration of Nagios & Nagios Client (NRPE) on CentOS 5
Installation
Add RPMForge Yum Repository
It is recommended that you configure yum-priorities prior to following this tutorial to avoid having base CentOS packages being overwritten by the RPMForge repository. Instructions to do so can be found on the CentOS Wiki.
- For x86 (32-bit) systems
- For x64 (64-bit) systems
Install & Configure Prerequisites
- Install Apache
- yum install httpd php gcc glibc glibc-common gd gd-devel
- Configure Apache to start on boot
- chkconfig 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 Nagios & Nrpe
- Install Nagios (Server Side)
[mylogin@hostname nagios]# yum install nagios nagios-plugins nagios-plugins-nrpe nagios-devel - Install Nagios (Client Side)
[mylogin@hostname nagios]# yum install nagios nagios-plugins nagios-plugins-nrpe nagios-devel nagios-nrpe
- 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
- /etc/init.d/nagios start
- Start Apache
- /etc/init.d/httpd start
Verify Install
- Try logging into your new Nagios installation by going to http://YourIpAddress/nagios/ and logging in with nagiosadmin and the password you set.
Nagios Server Configuration
Before starting any configuration make it a habit to backup all configuration files. This will save us a lot of time in troubleshooting. Having a backup will also allow us to restore the most recent configuration to the system. We can also make the backup configuration as a future reference in case we need something :
[mylogin@hostname nagios]# cd /etc
[mylogin@hostname nagios]# cp -frp nagios nagios.backup-<date>
[mylogin@hostname nagios]# cp -rf /etc/nagios/objects/localhost.cfg /etc/nagios/objects/server1.cfg
[mylogin@hostname nagios]# chown -R nagios:nagios server1.cfg
[mylogin@hostname nagios]# nano /etc/nagios/objects/server1.cfg[mylogin@hostname nagios]#service nagios restartCode:define host{ use linux-server ; Name of host template to use ; This host definition will inherit all variables that are defined ; in (or inherited by) the linux-server host template definition. host_name server1 alias server1 address your client server ip } define hostgroup{ hostgroup_name server1-servers ; The name of the hostgroup alias server1 Servers ; Long name of the group members server1 ; Comma separated list of hosts that belong to this group } define service{ use local-service ; Name of service template to use host_name server1 service_description PING check_command check_ping!100.0,20%!500.0,60% } define service{ use local-service ; Name of service template to use host_name server1 service_description Root Partition check_command check_local_disk!20%!10%!/ } define service{ use local-service ; Name of service template to use host_name server1 service_description Current Users check_command check_local_users!20!50 } define service{ use local-service ; Name of service template to use host_name server1 service_description Total Processes check_command check_local_procs!250!400!RSZDT } # Define a service to check the load on the local machine. define service{ use local-service ; Name of service template to use host_name server1 service_description Current Load check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0 } define service{ use local-service ; Name of service template to use host_name server1 service_description Swap Usage check_command check_local_swap!20!10 } define service{ use local-service ; Name of service template to use host_name server1 service_description SSH check_command check_ssh notifications_enabled 0 } define service{ use local-service ; Name of service template to use host_name server1 service_description HTTP check_command check_http notifications_enabled 0 }
[mylogin@hostname nagios]# chkconfig nagios on
[mylogin@hostname nagios]# service nrpe restart
[mylogin@hostname nagios]# chkconfig nrpe on
[mylogin@hostname nagios]# nagios -v /etc/nagios/nagios.cfg
Nagios Client Configuration
[mylogin@hostname nagios]# nano /etc/nagios/nrpe.cfg
change server_address=127.0.0.1 to your nagios server ip
[mylogin@hostname nagios]# service nagios restart
[mylogin@hostname nagios]# chkconfig nagios on
[mylogin@hostname nagios]# service nrpe restart
[mylogin@hostname nagios]# chkconfig nrpe ononel0ve Reviewed by onel0ve on . Install Nagios & Nagios Client (NRPE) on CentOS 5 Installation Add RPMForge Yum Repository It is recommended that you configure yum-priorities prior to following this tutorial to avoid having base CentOS packages being overwritten by the RPMForge repository. Instructions to do so can be found on the CentOS Wiki. For x86 (32-bit) systems rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.5.2-2.el5.rf.i386.rpm Rating: 5|| Host4Offshore :: Reliable, Quality, Fast Offshore Hosting Solution (USA/Netherlands/Sweden/Russia/Romania)
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- For x86 (32-bit) systems
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10th May 2012, 05:27 PM #2
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10th May 2012, 05:31 PM #3OPMemberWebsite's:
host4offshore.comread my whole post i explain how to config it properly . Its not copy of that post .
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