#PostgreSQL cluster restoration - restores incorrect configuration

Hello Team,

Here is the setup information,

OS type: SLES12

Affected DB version: v11 and v13 

4 nodes running on streaming replication method (SYNC). 

Scenario: 

We have 4 node cluster running on SYNC replication method with cluster_name parameter configured on each data nodes (like node1 → cluster_name=’node1’) and so on.

Now that, we have successfully taken the backup along with some archive logs. 

Backups are ran from primary (node1). 

We performed all the pre-reqs before we started the restoration on node1. Restoration went fine without any warnings, however we happen to see that the restored postgresql.conf on node1 had below entry,

cluster_name='node2' 

where we expect it to have 'node1’ 

Kindly check and confirm this behavior. 

Regards,

Kamal