README.md

Monitoring Operator for Postgres Operator

A tool to continuously collects metrics from Postgres Operator and provide them to Prometheus with low latency

Metrics

pg-op-mon exposes these metrics:

patroni_instances_wanted{namespace='demo',database='demo'} 3
patroni_running{namespace='demo',database='demo',no='0',master='1'} 1
patroni_running{namespace='demo',database='demo',no='1',master='0'} 1
patroni_running{namespace='demo',database='demo',no='2',master='0'} 1
patroni_timeline{namespace='demo',database='demo',no='0',master='1'} 80
patroni_timeline{namespace='demo',database='demo',no='1',master='0'} 80
patroni_timeline{namespace='demo',database='demo',no='2',master='0'} 80
patroni_location{namespace='demo',database='demo',no='0',master='1'} 81002324952
patroni_replayed_location{namespace='demo',database='demo',no='1',master='0'} 81002358616
patroni_replayed_location{namespace='demo',database='demo',no='2',master='0'} 81002358616
patroni_version{namespace='demo',database='demo',no='0',master='1',patroni_version='1.6.3'} 1
patroni_version{namespace='demo',database='demo',no='1',master='0',patroni_version='1.6.3'} 1
patroni_version{namespace='demo',database='demo',no='2',master='0',patroni_version='1.6.3'} 1
patroni_postgres_version{namespace='demo',database='demo',no='0',master='1'} 120007
patroni_postgres_version{namespace='demo',database='demo',no='1',master='0'} 120007
patroni_postgres_version{namespace='demo',database='demo',no='2',master='0'} 120007

last_scan 1234567

Deployment

Create Namespace if not already present

kubectl apply -f kubernetes/namespace.yaml

Create Roles

kubectl apply -f kubernetes/roles.yaml

Create the actual deployment

kubectl apply -f kubernetes/template.yaml

Prometheus Config

  - job_name: 'pg-op-mon'
    scrape_interval: 150s
    metrics_path: '/pgopmetrics'
    static_configs:
      - targets: [
        'pg-op-mon.monitoring.svc.cluster.local:80',
      ]