Add Grafana readme

software/grafana/README.md

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+# Grafama
+
+### From the [Grafana](https://github.com/grafana/grafana) GitHub
+The open and composable observability and data visualization platform.
+Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
+
+### Configuration recommendation
+If you do not manually setup SSL, restrict access to the exposed unencrypted webserver using a firewall.
+Use a reverse proxy (with SSL termination) to make Grafana accessible through ports 80 or 443 alongside
+other services on your local webserver.
+
+# Update support
+The egg _should_ keep the data and conf folder when reinstalling. Therefore a reinstallation with "latest" as the selected version
+can be used to update Grafana. During a reinstallation all plugins will be updated too. Newly added plugins will be installed during
+a reinstallation.
+
+If you want to reset the server completly, remove the `conf` and `data` directories manually before reinstalling.
+
+### Server Ports
+
+Ports required to run the server in a table format.
+
+| Port         | default |
+| ------------ | ------- |
+| Webinterface | 3000    |