What is Prometheus

Prometheus is a 21st century monitoring solution. Which architected as asynchronous server-client scrape system.

Installing Prometheus

Following instruction will setup a single node Prometheus cluster in docker-swarm, with node-exporter (to export system metrics)

1. Clone monitoring repo
2. cd monitoring/ansible/
3. fill inventory/hosts
4. Installing Docker
   1. ansible-playbook -i inventory setup-dockerswarm.yml
5. Setup Prometheus and grafana
   1. ansible-playbook -i inventory monitoring.yml
6. Setting up grafana Data source
   1. goto http://{prometheus-machine-ip}:3000/ use user: admin and passowrd: defined in grafana_admin_password variable inthe monitoring yml
   2. click on settings -> Data sources -> select Prometheus
   3. url -> http://{prometheus-machine-ip}:9090/prometheus -> save and test. This will configure data source
7. first Dashboard
   1. click on '+' sign -> import
   2. put 1860 in Grafana.com Dashboard field and load
   3. select datasource and import