#110 wal_keep_segments error using PostgreSQL 13

[Alberto Semprebon Rocha]

These errors are generated in logs using barman v2.12 and PostgreSQL 13:

barman@postgres ERROR:  unrecognized configuration parameter "wal_keep_segments"
barman@postgres STATEMENT:  SHOW "wal_keep_segments"
barman@postgres ERROR:  current transaction is aborted, commands ignored until end of transaction block
barman@postgres STATEMENT:  SELECT 1

[Justinas Balciunas]

I think you get this error because Barman 2.12 does not support PG 13, and here's why - with PostgreSQL 13 wal_keep_segments is replaced by wal_keep_size.