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helm-charts/charts/postgres-cluster/prometheus_rules/cluster-instances_on_same_node.yaml
Alex Lebens 1ca985edc7
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rebase this chart on cnpg provided chart
2025-05-13 00:14:16 -05:00

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YAML

{{- $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 -}}