Hi,
I would like to share my dashboard too. Monitoring is realy a cool part of a stake pool project. 
http://dashboard.qcada.com:3000
Grafana wiht Prometheus is realy powerfull, i will certainly give a try with GitLab, Apache or VMware!
I don’t have metrics about Blocks because QcADA is a baby pool for now 
Here are variables for two nodes (block_producer and relay1) in prometheus.yml
static_configs:
- targets: ['block_producer_IP:9100']
labels:
alias: 'core'
type: 'core'
- targets: ['relay1_IP:9100']
labels:
alias: 'relay1'
type: 'cardano-node'
- targets: ['block_producer_IP:12798']
labels:
alias: 'block-producer-node'
type: 'core'
- targets: ['relay1_IP:12798']
labels:
alias: 'relay-node1'
type: 'cardano-node'
To download : https://www.qcada.com/share/grafana-dashboard-QcADA.json
Comments or suggestions are welcome 
Luc [QcADA]