Adds docs for grafana dashboard installation

doc/110-Installation/40-Grafana-Integration.md

@@ -0,0 +1,93 @@
+# Grafana Integration
+
+Icinga for Windows provides default dashboards for Grafana, allowing an easy overview of the current performance metric and integration with Icinga Web.
+
+## Requirements
+
+To use Icinga for Windows Grafana Dashboards, you require the following components:
+
+* InfluxDB 2
+* Grafana 9.x (or later)
+* [Icinga Web Grafana Module](https://github.com/Mikesch-mp/icingaweb2-module-grafana)
+* [Icinga InfluxDB 2 Writer Feature enabled](https://icinga.com/docs/icinga-2/latest/doc/09-object-types/#influxdb2writer)
+
+## Installation
+
+### Install Icinga Web Module
+
+By default, you have to install the [Icinga Web Grafana Module](https://github.com/Mikesch-mp/icingaweb2-module-grafana) into
+
+```
+/usr/share/icingaweb2/modules/
+```
+on your Icinga Web server.
+
+Once installed, you can enable the module with the `icingacli`
+
+```
+icingacli module enable grafana
+```
+
+### Configure Module
+
+In case you already have the [Icinga Web Grafana Module](https://github.com/Mikesch-mp/icingaweb2-module-grafana) installed and configured, you can skip this section!
+
+You can either edit the configuration for the module within Icinga Web or edit the `config.ini` at `/etc/icingaweb2/modules/grafana/`
+
+```
+[grafana]
+host = "grafana.example.com:3000"
+protocol = "https"
+timerangeAll = "1w/w"
+defaultdashboarduid = "XIU_LcW4z"
+defaultdashboardpanelid = "1"
+shadows = "0"
+theme = "dark"
+datasource = "<influxdb source>"
+accessmode = "iframe"
+debug = "0"
+defaultdashboard = "Windows-Default"
+defaultorgid = "1"
+ssl_verifypeer = "0"
+ssl_verifyhost = "0"
+custvardisable = ""
+timerange = "3h"
+```
+
+Please update the fields `host`, `datasource` and possibly `custvardisable` accordingly. The `defaultdashboarduid` with value `XIU_LcW4z` is the Icinga for Windows Base-Template, while the `defaultdashboard` with `Windows-Default` is the name.
+
+### Install Icinga for Windows Graphs
+
+Each Icinga for Windows plugin repository, contains a `config` folder in which a `grafana` folder is present with `dashboards` and `icingaweb2-grafana` graphs.
+
+To ensure the [Icinga Web Grafana Module](https://github.com/Mikesch-mp/icingaweb2-module-grafana) is using the correct Grafana dashboards for the Icinga for Windows plugins, you can copy the content of the `graphs.ini` within the plugin repositories (`config/grafana/icingaweb2-grafana/`) into the Grafana Module `graphs.ini`.
+
+The default location is
+
+```
+/etc/icingaweb2/modules/grafana/graphs.ini
+```
+
+### Install Grafana Dashboards
+
+Each plugin repository ship with a bunch of `.json` files, containing the configuration for the Grafana dashboards. These are located inside `config/grafana/dashboards/`.
+
+To `Import` these dashboards, you simply have to navigate to `Dashboards` -> `Import` inside Grafana
+
+![Import Dashboards](../images/05_installation/01_grafana/01_import_dashboard.png)
+
+On the section `Import via panel json`, copy the content of the `.json` file you wish to import. Repeat this process for each single file. There is currently no option to import multiple files at onces.
+
+### Update Dashboard Configuration
+
+Last but not least, we require to update each Grafana dashboard to properly use your `InfluxDB 2` `Bucket` for the monitoring data collected by `Icinga`.
+
+To do so, open the dashboard you want to `edit` and hit the settings icon ![Import Dashboards](../images/05_installation/01_grafana/02_settings_icon.png) on the top right of the window.
+
+Now on the left side, click on `Variables` and search for the variable `influxbucket` on the right side. Click on the table entry with the name `influxbucket` and modify the `Constant options` `Value` with the name of the `InfluxDB 2` `Bucket`, your `Icinga` is writing monitoring metrics into.
+
+### Overview
+
+Once all above steps are successfully completed, you can have a look on your Grafana dashboards
+
+![Import Dashboards](../images/05_installation/01_grafana/03_example_view.png)