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Add under-utilized HPA alert

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This alert should inform when HPAs are scaled more than half the time at their minReplicas, which is an indication of possible cost savings.
In addition, it is assumed that a minimum number of replicas should still be running for redundancy.
This commit is contained in:
skoenig 2023-01-06 17:14:47 +01:00
parent ae1d84c788
commit 0b213a9c5d
1 changed files with 5 additions and 0 deletions
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5
_data/rules.yml
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@ -1708,6 +1708,11 @@ groups:
query: 'kube_horizontalpodautoscaler_status_desired_replicas >= kube_horizontalpodautoscaler_spec_max_replicas' query: 'kube_horizontalpodautoscaler_status_desired_replicas >= kube_horizontalpodautoscaler_spec_max_replicas'
severity: info severity: info
for: 2m for: 2m
- name: Kubernetes HPA underutilized
description: HPA is constantly at minimum replicas for 50% of the time
query: 'max(quantile_over_time(0.5, kube_horizontalpodautoscaler_status_desired_replicas[1d]) == kube_horizontalpodautoscaler_spec_min_replicas) by (horizontalpodautoscaler) > 3' # allow minimum 3 replicas running
severity: info
for: 5m
- name: Kubernetes Pod not healthy - name: Kubernetes Pod not healthy
description: Pod has been in a non-ready state for longer than 15 minutes. description: Pod has been in a non-ready state for longer than 15 minutes.
query: 'sum by (namespace, pod) (kube_pod_status_phase{phase=~"Pending|Unknown|Failed"}) > 0' query: 'sum by (namespace, pod) (kube_pod_status_phase{phase=~"Pending|Unknown|Failed"}) > 0'