# Re-attach ELK Elasticsearch PVC master in ECK Elasticsearch

**URL:** <https://discuss.elastic.co/t/re-attach-elk-elasticsearch-pvc-master-in-eck-elasticsearch/372222>\
**Category:** Elastic Cloud on Kubernetes (ECK)\
**Created:** [December 19, 2024, 12:32pm UTC](https://discuss.elastic.co/t/re-attach-elk-elasticsearch-pvc-master-in-eck-elasticsearch/372222 "2024-12-19T12:32:58Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![rakeshbrnwl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rakeshbrnwl/32/140189_2.png) [@rakeshbrnwl](https://discuss.elastic.co/u/rakeshbrnwl)\
**Post date:** [December 19, 2024, 12:32pm UTC](https://discuss.elastic.co/t/re-attach-elk-elasticsearch-pvc-master-in-eck-elasticsearch/372222/1 "2024-12-19T12:32:58Z")

</div>

I am planning to migrate ELK stake to ECK stake in kubernetes.

But I want to use same PVC (master/data) created earlier by Elasticsearch in ELK in Elasticsearch created by ECK Operator.

In my helm release of eck-elasticsearch, I have mentioned selector-matchLabels of old PVC. But new elasticsearch pod still creating new PVC in eck elasticsearch.

How I can achieve required schenario to avoid data loss in adapting ECK Cluster?

########  
volumeClaimTemplates:  
- metadata:  
name: elasticsearch-master  
spec:  
accessModes:  
- ReadWriteOnce  
resources:  
requests:  
storage: 10Gi  
selector:  
matchLabels:  
app: elasticsearch-master  
#############

Pods was in ELK Cluster : elasticsearch-master-0 , elasticsearch-master-1 , elasticsearch-master-2

Pods created in ECK Cluster : elasticsearch-es-master-0 , elasticsearch-es-master-1 , elasticsearch-es-master-2

PVC Created:

In ECK:  
elasticsearch-master-elasticsearch-es-master-0  
elasticsearch-master-elasticsearch-es-master-1  
elasticsearch-master-elasticsearch-es-master-2

Old PVC from ELK, which to be attached to elasticsearch-es-master-0 , elasticsearch-es-master-1 , elasticsearch-es-master-2.

elasticsearch-master-elasticsearch-master-0  
elasticsearch-master-elasticsearch-master-1  
elasticsearch-master-elasticsearch-master-2