# How to increase elastic pod volume

**URL:** <https://discuss.elastic.co/t/how-to-increase-elastic-pod-volume/222217>\
**Category:** Elastic Cloud on Kubernetes (ECK)\
**Created:** [March 5, 2020, 7:29am UTC](https://discuss.elastic.co/t/how-to-increase-elastic-pod-volume/222217 "2020-03-05T07:29:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pingz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pingz/32/58555_2.png) [@pingz](https://discuss.elastic.co/u/pingz)\
**Post date:** [March 5, 2020, 7:29am UTC](https://discuss.elastic.co/t/how-to-increase-elastic-pod-volume/222217/1 "2020-03-05T07:29:43Z")

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My cluster is in yellow state as it does not have enough space to allow shard. I initially tried to increase EBS volume size, but elastic node does not seem to recognize the added storage by querying /\_cat/allocation?v.

Next I tried to upgrade the pod's volumeClaimTemplates  
- metadata:  
name: elasticsearch-data  
spec:  
accessModes:  
- ReadWriteOnce  
resources:  
requests:  
storage: 120Gi  
storageClassName: gp2enc

but admin webhook rejected such a request. See error information below. How can I increase the pod template volume to get my cluster out of yellow state?

Error: UPGRADE FAILED: cannot patch "quickstart" with kind Elasticsearch: admission webhook "[elastic-es-validation-v1.k8s.elastic.co](http://elastic-es-validation-v1.k8s.elastic.co)" denied the request: [Elasticsearch.elasticsearch.k8s.elastic.co](http://Elasticsearch.elasticsearch.k8s.elastic.co) "quickstart" is invalid: spec.nodeSet[0].volumeClaimTemplates: Invalid value: v1.PersistentVolumeClaim{v1.PersistentVolumeClaim{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}, ObjectMeta:v1.ObjectMeta{Name:"elasticsearch-data", GenerateName:"", Namespace:"", SelfLink:"", UID:"", ResourceVersion:"", Generation:0, CreationTimestamp:v1.Time{Time:time.Time{wall:0x0, ext:0, loc:(\*time.Location)(nil)}}, DeletionTimestamp:(\*v1.Time)(nil), DeletionGracePeriodSeconds:(\*int64)(nil), Labels:map[string]string(nil), Annotations:map[string]string(nil), OwnerReferences:v1.OwnerReference(nil), Finalizers:string(nil), ClusterName:"", ManagedFields:v1.ManagedFieldsEntry(nil)}, Spec:v1.PersistentVolumeClaimSpec{AccessModes:v1.PersistentVolumeAccessMode{"ReadWriteOnce"}, Selector:(\*v1.LabelSelector)(nil), Resources:v1.ResourceRequirements{Limits:v1.ResourceList(nil), Requests:v1.ResourceList{"storage":resource.Quantity{i:resource.int64Amount{value:128849018880, scale:0}, d:resource.infDecAmount{Dec:(\*inf.Dec)(nil)}, s:"", Format:"BinarySI"}}}, VolumeName:"", StorageClassName:(\*string)(0xc000644ff0), VolumeMode:(\*v1.PersistentVolumeMode)(nil), DataSource:(\*v1.TypedLocalObjectReference)(nil)}, Status:v1.PersistentVolumeClaimStatus{Phase:"", AccessModes:v1.PersistentVolumeAccessMode(nil), Capacity:v1.ResourceList(nil), Conditions:v1.PersistentVolumeClaimCondition(nil)}}}: Volume claim templates cannot be modified

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**Author:** ![pebrc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pebrc/32/101790_2.png) [@pebrc](https://discuss.elastic.co/u/pebrc)\
**Post date:** [March 5, 2020, 9:29am UTC](https://discuss.elastic.co/t/how-to-increase-elastic-pod-volume/222217/2 "2020-03-05T09:29:09Z")

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VolumeClaimTemplates are immutable and that is a [limitation of StatefulSets in Kubernetes](https://github.com/kubernetes/enhancements/pull/660).

The workaround is to add another `NodeSet` with a different name to your Elasticsearch manifest with larger volumes and optionally remove the old `NodeSet`. This means unfortunately that data has to be copied around between nodes, but as said before this is a limitation of StatefulSets in Kubernetes.

See [https://github.com/elastic/cloud-on-k8s/issues/325](https://github.com/elastic/cloud-on-k8s/issues/325) for more details on the workaround and the related discusssion.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 4, 2022, 7:47am UTC](https://discuss.elastic.co/t/how-to-increase-elastic-pod-volume/222217/3 "2022-11-04T07:47:57Z")

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