At Thu, 18 May 2023 21:00:08 +0100, FOUTE K. Jaurès <jauresfoute@gmail.com> wrote in > Hello everyone, > > I have a replication between PostgreSQL 12 to 13 in the production system. > Using Ubuntu 18.04 LTS > We have this error today. > > > > *2023-05-18 18:34:04.374 WAT [117322] ERROR: could not receive data from > WAL stream: SSL SYSCALL error: EOF detected > 2023-05-18 18:34:04.381 WAT [118393] LOG: logical replication apply worker for subscription "inov_transactionnal_table_bertoua_sub_00" has started > 2023-05-18 18:34:04.423 WAT [1039] LOG: background worker "logical replication worker" (PID 117322) exited with exit code 1 > 2023-05-18 18:47:51.485 WAT [66836] postgres@inov_henrietfreres_v71_00 LOG: could not receive data from client: Connection timed out.* > > *Any idea how to solve this?*
According to the message, the SSL-encrypted replication connection got disconnected unexpectedly. I suppose it is due to the death of the upstream server or some reasons outside of PostgreSQL. It seems like the issue had been persisting for a few minutes after that. Other than the server's death, I doubt some network hardware problems or changes of firewall or networking setup of the OS. I think it would be good idea to check for them first.
