Kubernetes Resize Pvc Statefulset

Thats said, is easier solution, that you easier scale to replicas: using StatefulSet PersistentVolumeClaim, the volumeClaimTemplates: field the StatefulSet instead. volumeClaimTemplates: be to create unique PVCs each replica, they unique naming with e.g. -0 the number an ordinal for replicas a .

As discussed GitHub: StatefulSet: support resize pvc storage K8s v1.11 #68737. Due this limitation, database Operators Kubernetes don't support PVC resizing. is critical issue when database bigger you expected - have choice it needed backup DB recreate DB the backup. .

In realm Kubernetes clusters, statefulset application thrived. popularity soared the extent it demanded storage the attached volume provide. . statefulsets a well-known restriction is tracked the Support Volume Expansion StatefulSets StatefulSet: support resize pvc .

Update: volume expansion available a beta feature starting Kubernetes v1.11 in-tree volume plugins. is available a beta feature volumes backed CSI drivers of Kubernetes v1.16. the volume plugin CSI driver your volume support volume expansion, can resize volume the Kubernetes API:

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Each Pod the StatefulSet access local persistent volumes stick it after it's rescheduled. allows Pods maintain individual state that's separate their neighbors the set. these volumes with big limitation: Kubernetes doesn't provide way resize from StatefulSet object.

Editor's note: post part a series in-depth articles what's in Kubernetes 1.11 Kubernetes v1.11 persistent volume expansion feature being promoted beta. feature users easily resize existing volume editing PersistentVolumeClaim (PVC) object. Users longer to manually interact the storage backend delete recreate PV .

Directly modifying storage request the Prometheus CRD ( spec.storage.VolumeClaimTemplate.spec.resources.requests.storage) recreate StatefulSet the spec and, unfortunately, the pods managed the StatefulSet be recreated the time incurring downtime.On top that, wouldn't modify PVC object, the storage won't increase.

With, Kubernetes v1.11 persistent volume expansion feature being promoted beta we now easily resize volumes by updating PersistentVolumeClaim (PVC) object storage .

This task shows to scale StatefulSet. Scaling StatefulSet refers increasing decreasing number replicas. you StatefulSets only in Kubernetes version 1.5 later. check version Kubernetes, run kubectl version. all stateful applications scale nicely. you unsure whether scale StatefulSets, StatefulSet concepts .

PVC PV new size Update StatefulSet volumeClaimTemplate. we stop and raise PVC sizes not StatefulSet volumeClaimTemplate, scaling the StatefulSet result new pods PVCs wrong sizes. we update StatefulSet our local YAML file: