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# Icinga Web 2 Nagvis Module
## Requirements
This module glues NagVis and Icinga Web 2 together. Both of them are required
to be installed and configured:
* [Icinga Web 2](https://github.com/icinga/icingaweb2) (>= 2.0.0)
* [NagVis](http://www.nagvis.org/) (>= 1.8)
## NagVis Configuration
This module provides everything for a complete Icinga Web 2 NagVis
integration, including authentication and authorisation. To get
everything working as expected, your NagVis configuration should contain
the following settings:
```ini
[global]
authmodule="CoreAuthModIcingaweb2"
authorisationmodule="CoreAuthorisationModIcingaweb2"
logonmodule="LogonIcingaweb2"
[paths]
htmlcgi = "/icingaweb2"
[defaults]
backend = "ndomy_1"
urltarget = "_top"
hosturl="[htmlcgi]/monitoring/host/show?host=[host_name]"
hostgroupurl="[htmlcgi]/monitoring/list/hostgroups?hostgroup_name=[hostgroup_name]"
serviceurl="[htmlcgi]/monitoring/service/show?host=[host_name]&service=[service_description]"
servicegroupurl="[htmlcgi]/monitoring/list/servicegroups?servicegroup=[servicegroup_name]"
mapurl="[htmlcgi]/nagvis/show/map?map=[map_name]"
headermenu="0"
stylesheet="icingaweb-nagvis-integration.css"
```
The CSS file `public/css/icingaweb-nagvis-integration.css` must be copied to
`<nagvisdir>/share/userfiles/styles`.
## Module Configuration
For many environments the module needs no special configuration. Usually
you might want to add a bunch of main maps directly to your menu - this
can be done in `<ICINGAWEB_CONFIGDIR>/modules/nagvis/config.ini` like in
the following example:
```ini
[global]
default-map = demo-overview
[menu]
demo-germany = Germany
demo-ham-racks = Hamburg
```
## Icinga Web 2 Configuration
Since Icinga Web 2.2.0 session cookies are restricted to `/icingaweb2` or
your Icinga Web 2 base path. This means that your browser would not send
your session cookie to `/nagvis` and you would not be granted access to
NagVis. To solve this please add a section as follows to your Icinga Web 2
configuration in `/etc/icingaweb2/config.ini`:
```ini
[cookie]
path = /
```
Before doing so please log out from Icinga Web 2 and close your browser,
just to be on the safe side. You could otherwise lock your browser in a
redirection loop.
## PHP code integration
To get the integration running and to allow NagVis to find the configured
handlers you need to add a short piece of code to
`<nagvisdir>/share/server/core/functions/index.php`:
```php
/**
* Icinga Web 2 integration
*/
use Icinga\Application\EmbeddedWeb;
require_once 'Icinga/Application/EmbeddedWeb.php';
require_once EmbeddedWeb::start('/usr/share/icingaweb2', '/etc/icingaweb2')
->getModuleManager()
->getModule('nagvis')
->getLibDir() . '/nagvis-includes/init.inc.php';
```
This has to sit on top of the page, but after the `<?php` line.
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