Cluster syncronisation error

[DG]

Hello Community,

We have a fresh set up Jira Service Management as a Data Center version in the cluster with a postgres DB.

We get a some cluster error and could not found the cause.

What we have done:

 - Clustering - Node status / Application status  ✓

 - Check - cluster.properties ✓

 - Check - open ports ✓

Does anyone have an ideas what we can check?

Cluster Index Replication

Exception during health check invocation com.atlassian.jira.exception.DataAccessException: org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:SELECT ID, NODE_ID, SENDING_NODE_ID, INDEX_OPERATION_ID FROM public.nodeindexcounter WHERE (NODE_ID = ? ) AND (SENDING_NODE_ID = ? ) (An I/O error occurred while sending to the backend.)

Attachments

Exception during health check invocation com.atlassian.jira.exception.DataAccessException: org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:SELECT ID, issueid, MIMETYPE, FILENAME, CREATED, FILESIZE, AUTHOR, zip, thumbnailable FROM public.fileattachment ORDER BY CREATED DESC LIMIT 1 (An I/O error occurred while sending to the backend.)

Database

Exception during health check invocation java.lang.RuntimeException: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend.