{{- $alert := "CNPGClusterInstancesOnSameNode" -}}
{{- if not (has $alert .excludeRules) -}}
alert: {{ $alert }}
annotations:
  summary: CNPG Cluster instances are located on the same node.
  description: |-
    CloudNativePG Cluster "{{ .namespace }}/{{ .cluster }}" has {{ .value }}
    instances on the same node {{ .labels.node }}.

    A failure or scheduled downtime of a single node will lead to a potential service disruption and/or data loss.
  runbook_url: https://github.com/cloudnative-pg/charts/blob/main/charts/cluster/docs/runbooks/CNPGClusterInstancesOnSameNode.md
expr: |
  count by (node) (kube_pod_info{namespace="{{ .namespace }}", pod=~"{{ .podSelector }}"}) > 1
for: 5m
labels:
  severity: warning
  namespace: {{ .namespace }}
  cnpg_cluster: {{ .cluster }}
{{- end -}}