Cluster Monitoring Nagios installed on Ubuntu

Nagios Enterprise Cluster Monitoring

 

Nagios is a monitoring system that monitors system running status and network information. Nagios can monitor specified local or remote hosts and services, and provide exception notifications.

Nagios can run on Linux/Unix platforms and provides an optional browser-based Web interface for system administrators to view network status, various system problems, and logs.

Add User:
Useradd-M Nagios
Passwd Nagios

Add a user group (note: the user group already exists after ubuntu8.04)
Groupadd Nagios
Usermod-G Nagios

Install related software:
Apt-Get install apache2 PhP5 libssl0.9.8 libssl-dev OpenSSL

Download Nagios core, Nagios plugins, and Nagios Addons:
Wget http://downloads.sourceforge.net/project/nagios/nagios-3.x/nagios-3.2.1/nagios-3.2.1.tar.gz
Wget http://downloads.sourceforge.net/project/nagiosplug/nagiosplug/1.4.15/nagios-plugins-1.4.15.tar.gz
Wget http://downloads.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.12/nrpe-2.12.tar.gz

Install the Nagios masterProgram:
Tar-xzvf nagios-3.2.1.tar.gz
CD nagios-3.2.1
./Configure -- prefix =/usr/local/Nagios
Make all
Make install
Make install-init # Install Initialization Script available/etc/init. d/Nagios start Nagios
Make install-commandmode
Make install-config

Install Nagios-plugins:
Tar-xzvf nagios-plugins-1.4.15.tar.gz
Mkdir/usr/local/Nagios-plugins
CD nagios-plugins-1.4.15
./Configure -- prefix =/usr/local/Nagios-plugins
Make all
Make install
MV/usr/local/Nagios-plugins/libexec/usr/local/Nagios

Install nrpe:
Tar-xzvf nrpe-2.12.tar.gz
CD nrpe-2.12
./Configure -- enable-SSL -- enable-command-ARGs
Make all
CP src/check_nrpe/usr/local/Nagios/libexec

Now you can start Nagios:
/Etc/init. d/Nagios start

Configure Apache:
Append an object to the Apache configuration file httpd. conf.
ScriptAlias/Nagios/cgi-bin/usr/local/Nagios/sbin/
<Directory "/usr/local/Nagios/sbin/">
AllowOverride authconfig
Options execcgi
Order allow, deny
Allow from all
</Directory>
Alias/Nagios/usr/local/Nagios/share/
<Directory "/usr/local/Nagios/share">
Options none
AllowOverride authconfig
Order allow, deny
Allow from all
Authname "Nagios access"
Authtype basic
Authuserfile/usr/local/Nagios/etc/. htpasswd
Require valid-user
</Directory>

Generate user name and password:
/Usr/bin/htpasswd-C/usr/local/Nagios/etc/. htpasswd Nagios

Modify/usr/local/Nagios/etc/cgi. cfg and modify use_authentication = 1 to use_authentication = 0, which means no verification is required. Otherwise, some pages will not be displayed.

Check whether the configuration file has an error:
/Usr/local/Nagios/bin/Nagios-V/usr/local/Nagios/etc/Nagios. cfg

 

 

Task: restart Apache 2 server/restart apache service

#/Etc/init. d/apache2 restart
Or
$ Sudo/etc/init. d/apache2 restart

Test: http: // 192.168.0.244/Nagios/