# ElasticSearch CCR Configuration

**URL:** <https://discuss.elastic.co/t/elasticsearch-ccr-configuration/374391>\
**Category:** Elastic Cloud on Kubernetes (ECK)\
**Tags:** elastic-stack-monitoring, elastic-stack-security\
**Created:** [February 11, 2025, 10:43pm UTC](https://discuss.elastic.co/t/elasticsearch-ccr-configuration/374391 "2025-02-11T22:43:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Pratik\_Axel](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pratik_axel/32/141120_2.png) [@Pratik\_Axel](https://discuss.elastic.co/u/Pratik_Axel)\
**Post date:** [February 11, 2025, 10:43pm UTC](https://discuss.elastic.co/t/elasticsearch-ccr-configuration/374391/1 "2025-02-11T22:43:05Z")

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Hi,

We are in the process of setting up two Active-Active ELK Clusters across two independent Kubernetes clusters using (Elastic Cloud on Kubernetes) deployment.

Issue Identified - During the Remote Cluster configuration for CCR in the Local/Primary Cluster, we encountered the following error which is preventing the Local/Primary Cluster from establishing communication with the Remote Cluster.

"error.message":"Unable to open any connections to remote cluster [Test-Cluster]","error.stack\_trace":"java.lang.IllegalStateException: Unable to open any connections to remote cluster [Test-Cluster]\n\tat [org.elasticsearch.server@8.15.1/org.elasticsearch.transport.SniffConnectionStrategy$AbstractSniffResponseHandler.handleNodes(SniffConnectionStrategy.java:463)\n\tat](mailto:org.elasticsearch.server@8.15.1/org.elasticsearch.transport.SniffConnectionStrategy$AbstractSniffResponseHandler.handleNodes(SniffConnectionStrategy.java:463)%5Cn%5Ctat) [org.elasticsearch.server@8.15.1/org.elasticsearch.transport.SniffConnectionStrategy$AbstractSniffResponseHandler$1.onFailure(SniffConnectionStrategy.java:446)](mailto:org.elasticsearch.server@8.15.1/org.elasticsearch.transport.SniffConnectionStrategy$AbstractSniffResponseHandler$1.onFailure(SniffConnectionStrategy.java:446))

Both the ELK transport are exposed as NodePort on 32075 and direct telnet works as well.

Can someone please help here ?

Thanks