Adding upstream version 1.1.1.upstream/1.1.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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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.