various edits to README and docker-compose

README.md

@@ -80,7 +80,8 @@ See ./examples for docker-compose file with Grafana if you'd like to quickly get
 
 Link to official documentation explaining docker-compose: https://docs.docker.com/compose/
 
-Docker-compose file itself has comments on how to change it to adapt to your environment.
+Docker-compose file itself has comments on how to change it to adapt to your environment. It does use volumes in order to persist data.
+Docker volumes documentation: https://docs.docker.com/engine/tutorials/dockervolumes/
 
 If you have [promdash](https://github.com/prometheus/promdash) set up you
 can generate views like:

examples/docker-compose.yml

@@ -2,8 +2,9 @@
 
 # In this case, it depends on the proper ceph keys in the correct place. Adapt this to your use case if you would like to use in production
 
-# CEPHCONF = /etc/ceph is usually the folder you want, if you're storing them somewhere else, change the value below
+# Change CEPHCONF below to path where your ceph.conf and keys are stored.
 
+# Also, change the password to the Grafana dashboard if you intend to use this further than just testing.
 
 version: '2'
 

examples/prometheus.yml

@@ -1,4 +1,5 @@
 # prometheus.yml
+
 # Place in same directory as docker-compose.yml and replace $DOCKERHOST with your desired host IP where ceph_exporter is running
 
 global: