Install & Configure NagVis

NagVis is a visualization addon for the well known network managment system Nagios

Key features

• Display of single Hosts and Services
• Visualize a complete Host- or Servicegroup with one icon
• Display the summary state of a Host and all its services
• Display only the real problems
• Sub-map icons which represent a complete NagVis Map in one icon (drill down)
• Visualization of complete IT processes using self drawn graphics
• Online documentation of IT environments including current states
• Visualisation of network traffic using weathermap lines
• Multilingual capabilities
• Web configuration interface (WUI)

Take a look at ScreenShots to better understand its usability.

Installation
Install Nagios
Install Nconf -If required.

Install Dependency
install epel repo to get mod_python for centos 6

rpm -ivh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm
yum install php-mbstring mod_python graphviz -y

Download & Install MK Livestatus
MKLivestatus is a new type of Nagios event broker module. Simplified: It serves a socket where programs can access information directly from the Nagios core. The module is easy to install, brings no administrative overhead and is very fast.

Check_mk adopts a new a approach for collecting data from operating systems and network components. It obsoletes NRPE, check_by_ssh, NSClient and check_snmp. It has many benefits, the most important of which are:

• Significant reduction of CPU usage on the Nagios host.
• Automatic inventory of items to be checked on hosts.

The larger your Nagios installation is, the more important get these points. In fact check_mk enables you to implement a monitoring environment exceeding 20.000 checks/min on the first hand.
ReadMore

tar zxvf check_mk-1.1.8.tar.gz 
cd check_mk-1.1.8
./setup.sh
mkdir /var/lib/check_mk/web/nagiosadmin -p
chown apache: /var/lib/check_mk -R
 
 
service httpd restart
service nagios restart

make sure user apache belongs to nagios group [usermod -a -G nagios apache]
else you’ll need to change permission for live file every time you restart nagios [chmod 777 /usr/local/nagios/var/rw/live]
check working of check_mk with existing nagiosadmin auth http://192.168.1.1/check_mk/

Download & Install NagVis with View Only access

tar zxvf nagvis-1.5.6.tar.gz 
cd nagvis-1.5.6
./install.sh
 
service httpd reload
 
#you may need to modify php.ini for timezone.
e.g for India 
/etc/php.ini
date.timezone = Asia/Calcutta

add last three lines in /etc/httpd/conf.d/nagvis.conf

  <IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /nagvis
 
 
RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.58
RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.147
RewriteRule     /nagvis - [E=REMOTE_USER:guest]

this will treat all users as guest except 1.58 & 1.147
also you need to allow guest users to view maps, you can modify settings by nagiosadmin user loggedin to nagvis.

Access nagvis using http://192.168.1.1/nagvis/frontend/nagvis-js/index.php
NagVis Docs