groups:
- name: kube-controller-manager.rules
  rules:
  - alert: K8SControllerManagerDown
    expr: absent(up{job="kube-controller-manager"} == 1)
    for: 5m
    labels:
      severity: critical
    annotations:
      description: There is no running K8S controller manager. Deployments and replication
        controllers are not making progress.
      runbook: https://coreos.com/tectonic/docs/latest/troubleshooting/controller-recovery.html#recovering-a-controller-manager
      summary: Controller manager is down