Re: [HELP] Issue with standby server using WAL archive

Greetings,

* Praveen Kumar K S (praveenssit(at)gmail(dot)com) wrote:
> Config on Master:
> archive_mode = on
> archive_command = 'test ! -f /mnt/server/archivedir/%f && cp %p
> /mnt/server/archivedir/%f'

You really shouldn't use 'cp' or such a simple archive command, you'll
very likely lose WAL on a system crash with that setup.

> Config on standby:
> standby_mode = 'on'
> restore_command = 'cp /mnt/server/archivedir/%f %p'
>
> Before starting standby, I took base backup
>
> pg_basebackup -v -D main -R -P -h pg1 -p 5432 -U replication
> pg_basebackup: initiating base backup, waiting for checkpoint to complete
> pg_basebackup: checkpoint completed
> 43518/43518 kB (100%), 1/1 tablespace
>
> NOTICE: pg_stop_backup complete, all required WAL segments have been
> archived
> pg_basebackup: base backup completed
>
> Now, copied recovery.conf to data directory
>
> Started postgres server on standby and seeing below error in log.
>
> 2020-07-02 13:14:02.134 UTC [7643] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:02.644 UTC [7646] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:03.154 UTC [7649] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:03.664 UTC [7652] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:04.174 UTC [7655] postgres(at)template1 FATAL: the database
> system is starting up
> cp: cannot stat '/mnt/server/archivedir/00000001000000000000000D': No such
> file or directory
> 2020-07-02 13:14:04.684 UTC [7660] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:05.194 UTC [7663] postgres(at)template1 FATAL: the database
> system is starting up
> 2020-07-02 13:14:05.197 UTC [7664] [unknown](at)[unknown] LOG: incomplete
> startup packet
> cp: cannot stat '/mnt/server/archivedir/00000001000000000000000D': No such
> file or directory
> cp: cannot stat '/mnt/server/archivedir/00000001000000000000000D': No such
> file or directory

> Am I missing anything here ? Please suggest. TIA.

Do you have hot_standby enabled in postgresql.conf? What version of PG?

Thanks,

Stephen