Editing Kubernetes PodDisruptionBudget (PDB)

* https://kubernetes.io/docs/concepts/workloads/pods/disruptions/#pod-disruption-budgets
** [[1.4]] Alpha, [[K8s v1.21]] April 2021 GA, [[Eviction subresource]] 1.22
* https://github.com/kubernetes/enhancements/issues/85
* https://github.com/kubernetes/enhancements/tree/master/keps/sig-apps/85-Graduate-PDB-to-Stable
* https://kubernetes.io/docs/tasks/run-application/configure-pdb/

== Commands ==
* <code>[[kubectl get pdb]]</code>


 [[kubectl api-resources]] | grep -i pdb
 poddisruptionbudgets              pdb          policy/v1                              true         PodDisruptionBudget

 33m         Warning   [[CalculateExpectedPodCountFailed]]   poddisruptionbudget/xxxx-pdb                     Failed to calculate the number of expected pods: [[statefulsets.apps]] does not implement the [[scale]] subresource


 [[kind: PodDisruptionBudget]]


 55m         Normal    NoPods                            poddisruptionbudget/your_text                     No matching pods found


 [[kubectl drain]] ip-10-0-3-48.us-east-2.compute.internal [[--ignore-daemonsets]]
 error when evicting pods/"your-pod-name" (will retry after 5s): [[Cannot evict pod as it would violate the pod's disruption budget]]

== Examples ==

 {{PDB example}}

== Related ==
* <code>[[maxUnavailable]]</code>
* <code>[[NoPods]]</code>
* [[Disruptions]]
* [[Karpenter]]
* <code>[[spec.replicas]]</code>
* [[Eviction API]]
* 1.21 [[Graceful node shutdown]]
* <code>[[kubectl drain]]</code>
* <code>[[kubectl drain]] your-node-name --ignore-daemonsets</code>
* [[TopologySpreadConstraints]]
* <code>[[ttlSecondsUntilExpired]]</code>
* <code>[[kubernetes_pod_disruption_budget_v1]]</code>

== See also ==
* {{PDB}}
* {{kubectl get pods}}

[[Category:K8s]]