Extension:NagVis

**MediaWiki extensions manual**
NagVis; Release status: unmaintained
Implementation	Tag
Description	Add NagVis maps to MediaWiki pages
Author(s)	Felipe Muñoz Brieva (felipe@delegacionprovincial.com)
MediaWiki	Tested on 1.7, 1.13, 1.14, 1.18, 1.24
License	GNU General Public License 2.0 or later
Download	Download; Check extension; GitHub: project page; git repository URL [help]; commit history; ; Note:; No localisation updates are; provided by translatewiki.net.

Article publised about this extension Telemedicine: Using wikis for monitoring systems

Check extension with Icinga2

NagVis is an extension for add NagVis maps to MediaWiki pages. Icons map will be updated automatically and status will be pull from Nagios/Icinga/NagVis servers.

NagVis is a visualization addon for the well known network management systems Nagios and Icinga.

Introduction

Usually people monitor a lot of host/services, system administrators spend a lot of time solving trivial problems and a lot alarms/warning can be solved by end user.

If we join a wiki (Mediawiki) for documentation and Icinga/Nagios/NagVis for monitoring, we obtain a powerful tool. System administrator can create instructions, Icinga/Nagios/NagVis reports status and end user can adapt instructions to their needs. (Also you can use Grafana extension to create beautiful metrics & analytics dashboards updated in realtime)

Check usage

Mediawiki (1.24.1), Icinga (2.3.2), NagVis (1.8.1) and extension 1.08)

Installation

Download the extension (tgz) or (zip).
Upload NagVis directory to your extensions directory from the root of your MediaWiki installation.
Add require_once "$IP/extensions/NagVis/NagVis.php"; to your LocalSettings.php file (near the end).
Done

Usage

To insert a NagVis map add the tag on any page (only one tag per wiki page):

<NagVis showheader=(yes/no) urlnagvis=nagvis_server urlmonitor=(nagios/icinga)_server map=map_name >
Header map title
</NagVis>

Tag attributes

The following arguments (tag attributes) can be used to control ‎<NagVis> tags:

showheader (yes/no): Show header with time to refesh map, links to NagVis map and Nagios/Icinga server.
urlnagvis: NagVis url (Extension will check if it's a correct NagVis site)
urlmonitor: Nagios/Icinga url (Mandatory from NagVis 1.6)
map: Map name in NagVis
mapBackground: NagVis map background (if map name and map background are different, see example)
nagvispath: Web path to NagVis
cgibinpath: cgi-bin path (Param htmlcgi in nagvis.ini.php)
system: Icon for monitoring system. (Values: nagios/icinga and default value is icinga) (optional)

Example

<NagVis 
 map=WikiMap
 mapbackground=WikiBackgrund.jpg
 urlnagvis=http://your_server/nagvis/frontend/nagvis-js/index.php
 urlmonitor=http://your_server/icinga2-classicui
 showheader=yes 
 nagvispath=/nagvis
 cgibinpath=/cgi-bin/icinga2-classicui
 system=icinga>
 Title map (NagVis with Mediawiki)
</NagVis>

Notes about authentication

* Important: Before making changes you must read Apache, Nagios, Icinga and NagVis about security risks and recomendations.

MediaWiki must be able to pull status without user authentication so you must change your webserver setup. There are several solutions and your configuration could be different depending on your security needs.

Configuration: example for connecting NagVis without password

Create a NagVis user with role Users (read only)
Add user to nagvis.conf (in Debian/Ubuntu is located on /etc/apache/conf.d) SetEnv REMOTE_USER user

  ...

  </IfModule>
</Directory>
SetEnv REMOTE_USER user

See NagVis FAQ

Configuration: example for connecting Nagios/Icinga with guest user and password

1. Create guest user for Icinga (Debian/Ubuntu)

Add guest user:

htpasswd /usr/local/icinga/etc/htpasswd.users guest

Enable guest user for Icinga at /usr/local/icinga/etc/cgi.cfg, uncomment following:

default_user_name=guest

add guest in followings lines:

 authorized_for_all_services=icingaadmin,guest
 authorized_for_all_hosts=icingaadmin,guest

Restart icinga:

/etc/init.d/icinga restart

2. Create guest user for icinga2-classicui (Debian/Ubuntu)

Add guest user:

htpasswd /etc/icinga2-classicui/htpasswd.users guest

Add guest in /etc/icinga2-classicui/cgi.cfg:

 authorized_for_all_services=icingaadmin,guest
 authorized_for_all_hosts=icingaadmin,guest

3. Create guest user for Nagios (Debian/Ubuntu)

Add guest user:

htpasswd /usr/local/nagios/etc/htpasswd.users guest

Enable guest user for Nagios at /usr/local/nagios/etc/cgi.cfg, uncomment following:

default_user_name=guest

add guest in followings lines:

 authorized_for_all_services=nagiosadmin,guest
 authorized_for_all_hosts=nagiosadmin,guest

Restart nagios:

/etc/init.d/nagios restart

Configuration: example for connecting Nagios/Icinga without password

Modify nagios.conf or icinga.conf for apache (ex: Debians servers: /etc/apache2/conf.d/nagios.conf) in all your Nagios/Icinga servers:

ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"

<Directory "/usr/local/nagios/sbin">
  Options ExecCGI
  AllowOverride All 
  Order allow,deny
  AuthName "Nagios Access"
  AuthType Basic
  AuthUserFile /usr/local/nagios/etc/htpasswd.users
  Require valid-user
  Allow from MediaWiki_Server_IP, Authorized_Users_IP
  SetEnv REMOTE_USER guest
  Satisfy Any
</Directory>

Alias /nagios "/usr/local/nagios/share"

<Directory "/usr/local/nagios/share">
  Options None
  AllowOverride All
  Order allow,deny
  AuthName "Nagios Access"
  AuthType Basic
  AuthUserFile /usr/local/nagios/etc/htpasswd.users
  Require valid-user
  Allow from MediaWiki_Server_IP, Authorized_Users_IP
  SetEnv REMOTE_USER guest
  Satisfy Any
</Directory>

Allow From:

MediaWiki_Server_IP: IP address of your MediaWiki Server
Authorized_Users_IP: IP address of users who connect to Nagios/Icinga without password

IP's not included in Allow from  should introduce an authorized (Nagios/Icinga) user for pages with NagVis Tag

Screenshots (Examples)

NagVis tag with argument showheader=yes:

NagVis tag with argument showheader=no

When you move the mouse over icons in the maps you get data from Nagios/Icinga/NagVis server:

Credits

This extension uses the following software:

PHP Simple HTML DOM Parser at http://simplehtmldom.sourceforge.net/

and works with:

Versions

Download

1.08:

Updated to:

NagVis: 1.7 and 1.8 branches

Tested on:

Mediawiki: 1.24.1

1.06:

Updated to:

NagVis: 1.6 branch

Tested on:

Mediawiki: 1.18

1.04:

Updated to:

NagVis: 1.4 branch

Tested on:

Mediawiki: 1.14

1.02:

Updated to:

NagVis: 1.3 branch

1.0:

Tested on:

Mediawiki: 1.7 and 1.13
NagVis: 1.3rc3

NagVis Release status: unmaintained

Implementation	Tag
Description	Add NagVis maps to MediaWiki pages
Author(s)	Felipe Muñoz Brieva (felipe@delegacionprovincial.com)
MediaWiki	Tested on 1.7, 1.13, 1.14, 1.18, 1.24
License	GNU General Public License 2.0 or later
Download	Download Check extension GitHub: project page git repository URL ^{[help ]} commit history Note: No localisation updates are provided by translatewiki.net .