A Grafana backend datasource using PNP4Nagios to access RRD files.
Search for pnp in the Grafana plugins directory or simply use the grafana-cli command:
%> grafana-cli plugins install sni-pnp-datasource
Also OMD-Labs comes with this datasource included, so if you use OMD-Labs, everything is setup already.
Otherwise follow these steps:
%> cd var/grafana/plugins
%> git clone -b release-1.0.7 https://github.com/sni/grafana-pnp-datasource.git
%> restart grafana
Replace release-1.0.7 with the last available release branch.
In order to make this datasource work, you need the pnp api. This is a separate
project at the moment and will be part of the official pnp in the future. You
can fetch the api.php from https://github.com/lingej/pnp-metrics-api and place
it in your controler folder.
In a standard PNP setup, you could basically just download the api directly into the controller folder with a simple wget:
wget "https://github.com/lingej/pnp-metrics-api/raw/master/application/controller/api.php" \
-O /usr/share/pnp4nagios/html/application/controllers/api.php
Adjust the output path to your installation.
Or simply use the PNP fork from https://github.com/ConSol-Monitoring/pnp which has added the api already.
Add a new datasource and select:
- Type 'PNP'
- Url to pnp, ex.: 'https://localhost/sitename/pnp4nagios'
This datasource ships an example dashboard which gets you started and shows the internal PNP statistics.
Simply select host, service and label in the query editor. Regular expressions
are supported in the host and service field by adding slashes like /.*/.
You may use the following variables in the alias field:
- $tag_host: will be replaced with the hostname
- $tag_service: will be replaced with the service name
- $tag_label: will be replaced with the label
- $tag_perflabel: same as label
All standard variables will also do.
There is basic templating variable support. There are 3 different querys available:
- $host: hosts
- $service: services where host = /^$host$/
- $label: labels where host = /^$host$/ and service = /^$service$/
To test and improve the plugin you can run Grafana instance in Docker using following command (in the source directory of this plugin):
%> make dev
This will start a grafana container and a build watcher which updates the plugin is the dist/ folder.
The dev instance can be accessed at http://localhost:3000
You need to add the datasource manually.
For testing you can use the demo pnp instance at:
- URL: https://demo.thruk.org/demo4/pnp4nagios
- No authentication required
How to create a new release:
%> export RELVERSION=1.0.9
%> export GRAFANA_API_KEY=...
%> vi package.json # replace version
%> vi CHANGELOG.md # add changelog entry
%> git commit -am "Release v${RELVERSION}"
%> git tag -a v${RELVERSION} -m "Create release tag v${RELVERSION}"
%> make GRAFANA_API_KEY=${GRAFANA_API_KEY} releasebuild
# create release here https://github.com/sni/grafana-pnp-datasource/releases/new
# submit plugin update here https://grafana.com/orgs/sni/plugins
see CHANGELOG.md
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