I have been testing barman and repmgr for backups & disaster recovery on a simple single master, single standby environment.
I have a third server used primarily for backups and after my initial setup for backing up the master things seemed good. ("barman check db" returned all OK and I was able to do a backup)
Then I switched my master and standby server roles, which I did using "repmgr switchover". That too was successful.
When I try to reconfigure the backup server barman configuration to backup the new master, I see an error: archiver errors: FAILED (unknown: 1) when I run "barman check db2"
It seems to be happy to take a backup of db2 if I run "barman backup db2".
I am running on Ubuntu 16.04.2 LTS, PostgreSQL 9.6.3 and using streaming archiver.
I'm not sure what is causing the archiver error and am a bit concerned. Any thoughts out there?
Thanks!
Lonnie