Re: Problems rebuilding slave using pg_basebackup

From: Douglas Reed <douglas(at)fsbtech(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: Problems rebuilding slave using pg_basebackup
Date: 2017-11-08 13:00:20
Message-ID: CAN7N4m0q81EZSn=m8DLRVMf6XEeVnsbyp9SD6pzmgmUpL0-QOQ@mail.gmail.com
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Message-ID: CANUg7LC8oxJLEYi2BTOvqe0iM40Grt7i5GWmWxYy_OSSZcaXPA(at)mail(dot)gmail(dot)com
<https://www.postgresql.org/message-id/CANUg7LC8oxJLEYi2BTOvqe0iM40Grt7i5GWmWxYy_OSSZcaXPA%40mail.gmail.com>

Hi

Many thanks for your response

Upgrading may not be possible at present as the master is a 24/7 operation,
but if anyone knows whether master and slave can be different minor
releases (9.5.4 vs 9.5.6) would be helpful

What is your archive_command and full_page_writes set to? Also, what is the
value of checkpoint_segments and checkpoint_timeout?

checkpoint_segments - Not found in params, could this be

wal_keep_segments = 48

checkpoint_timeout = 5min

archive_command = disabled
full_page_writes = on

Try increasing wal_sender_timeout before running pg_basebackup.

I have just increased the value from 1min to 5min

I'm looking also at other backup options such as barman

Regards

--
Douglas Reed
DBA
FSB Technology
07973-132664

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