example.rules.yml

groups:
- name: digitalocean.rules
  rules:
  - record: digitalocean_droplets_price_monthly
    expr: sum(digitalocean_droplet_price_monthly)
  - record: digitalocean_snapshots_price_monthly
    expr: sum(digitalocean_snapshot_size_bytes) / 1024 / 1024 / 1024 / 20
  - record: digitalocean_volumes_price_monthly
    expr: sum(digitalocean_volume_size_bytes) / 1024 / 1024 / 1024 / 10
  - record: digitalocean_price_monthly
    expr: digitalocean_droplets_price_monthly + digitalocean_volumes_price_monthly + digitalocean_snapshots_price_monthly
  - alert: droplet_down
    expr: digitalocean_droplet_up == 0
    for: 5m
    annotations:
      description: Droplet {{ $labels.name }} in region {{ $labels.region }} is down.
      summary: Droplet is down.
  - alert: high_monthly_price
    expr: digitalocean_price_monthly > 100
    for: 6h
    annotations:
      description: Overall we're spending too much money. Please try to minimize cost.
      summary: Paying too much at DigitalOcean.
  - alert: floating_ip_unused
    expr: digitalocean_floating_ipv4_active == 0
    for: 1h
    annotations:
      description: Paying ~5$/month for {{ $labels.ipv4 }}, an unused Floating IP.
      summary: Paying for an unsed FloatingIP.
  - alert: too_many_packer_snapshots
    expr: count(digitalocean_snapshot_size_bytes{name=~"packer-.*",type="droplet"})
      > 10
    for: 6h
    annotations:
      description: Please delete old packer snapshots. We don't need {{$value}}.
      summary: More than 10 Packer Snapshots.
  - alert: too_few_ssh_keys
    expr: count(digitalocean_key) < 1
    for: 1h
    annotations:
      description: We can't find SSH keys, please add at least one.
      summary: No SSH Keys.