Add instructions for installing Grafana

Readme.md

@@ -77,3 +77,9 @@ Feb 21 20:10:30 raspberrypi systemd[1]: Started Bme680 Homekit service.
 Prometheus is a system for monitoring and alerting. To install it run `prometheus./install.sh`.
 
 Prometheus server will listen on port `:9090`
+
+### Grafana 
+
+Grafana can be used to create dashboard and visualise prometheus metrics. To install it run `grafana/install.sh`
+
+Grafana is accessible on port `:80`.

grafana/grafana.ini

@@ -0,0 +1,10 @@
+#################################### Server ####################################
+[server]
+protocol = http
+http_port = 80
+enable_gzip = true
+
+#################################### Anonymous Auth ######################
+[auth.anonymous]
+# enable anonymous access
+enabled = true

grafana/install.sh

@@ -0,0 +1,9 @@
+wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -
+echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list
+apt-get update
+apt-get install -y grafana
+
+cp grafana.ini /etc/grafana/grafana.ini
+systemctl daemon-reload
+systemctl enable grafana-server
+systemctl start grafana-server