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chore: pvc storage alert by percentage #1105

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chore: pvc storage alert by percentage #1105

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25 changes: 25 additions & 0 deletions alerts/storage_alerts.libsonnet
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,31 @@
summary: 'PersistentVolume is having issues with provisioning.',
},
},
{
alert: 'KubernetesStorageUsage85Percent',
expr: |||
(
kubelet_volume_stats_used_bytes{%(prefixedNamespaceSelector)s%(kubeletSelector)s}
/
kubelet_volume_stats_capacity_bytes{%(prefixedNamespaceSelector)s%(kubeletSelector)s}
) * 100 > 85
and
kubelet_volume_stats_used_bytes{%(prefixedNamespaceSelector)s%(kubeletSelector)s} > 0
unless on(%(clusterLabel)s, namespace, persistentvolumeclaim)
kube_persistentvolumeclaim_access_mode{%(prefixedNamespaceSelector)s access_mode="ReadOnlyMany"} == 1
unless on(%(clusterLabel)s, namespace, persistentvolumeclaim)
kube_persistentvolumeclaim_labels{%(prefixedNamespaceSelector)s%(pvExcludedSelector)s} == 1
||| % $._config,
'for': '5m',
labels: {
severity: 'warning',
},
annotations: {
description: 'Storage usage of PVC {{ $labels.persistentvolumeclaim }} in Namespace {{ $labels.namespace }} {{ with $labels.%(clusterLabel)s -}} on Cluster {{ . }} {{- end }} has exceeded 85%% for the last 5 minutes. Currently {{ $value | humanizePercentage }} is used.' % $._config,
summary: 'High storage usage detected (PVC {{ $labels.namespace }}/{{ $labels.persistentvolumeclaim }}).',
runbook_url: 'https://runbooks.prometheus-operator.dev/runbooks/node/nodefilesystemspacefillingup/',
},
},
],
},
],
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