On 21/02/2017 01:49, Venkata B Nagothi wrote:
On Tue, Feb 21, 2017 at 6:53 AM, Gabriel Ortiz Lour <ortiz.ad...@gmail.com
<mailto:ortiz.ad...@gmail.com>> wrote:
Hi!
Thanks for pointing out pg_basebackup
The issue I'm facing now is about missing WAL files.
What i'm doing:
# su postgres -c 'pg_basebackup -D /var/lib/postgresql/9.1/main/ -x -h
master -U sa_rep' ; service postgresql start
Ok but between pg_basebackup and service postgresql start you must configure the db as a stand by. You need to copy a pre-configured recovery file into the data dir (or whatever debian demands) and
then start. In 9.3 there is --write-recovery-conf which does this for you.
The idea is to call "postgresql start" as soon as pg_basebackup ends.
But I'm getting the following error:
FATAL:could notreceive data fromWAL stream:FATAL:requested WAL segment
XXXXXXX has already been removed
Shoud I just increase 'wal_keep_segments' ?
Yes, that is the way to go. But, you need to know what number you need to
increase the wal_keep_segments to ?
Which purely depends on the number of WALs being generated. Which version of
PostgreSQL are you using by the way ?
Apparently 9.1. In 9.2 you can always use -X stream , thus making increasing of
the wal_keep_segments redundant.
If I do so, do I need do restart the master or just a reload will do it?
No need to restart, "reload" will do.
Venkata B N
Database consultant
---------- Forwarded message ----------
From: *Achilleas Mantzios* <ach...@matrix.gatewaynet.com
<mailto:ach...@matrix.gatewaynet.com>>
Date: 2017-02-17 11:20 GMT-02:00
Subject: Re: [GENERAL] Streaming Replication Without Downtime
To: pgsql-general@postgresql.org <mailto:pgsql-general@postgresql.org>
Gabriel you are thinking this in the correct way, but its really :
pg_basebackup -D <your data dir> --write-recovery-conf --progress
--xlog-method=stream -h <your primary db server>
then you just edit recovery.conf (if needed), tweak postgersql.conf (if
needed) and start the standby .
On 17/02/2017 15:09, Gunnar "Nick" Bluth wrote:
(sorry for the toppost, mobile device)
What you're looking for is pg_basebackup with - - xlog=stream, I guess.
Regards,
Nick
Am 17. Februar 2017 14:06:36 MEZ schrieb Gabriel Ortiz Lour
<ortiz.ad...@gmail.com> <mailto:ortiz.ad...@gmail.com>:
Hi all,
I've been searching for a way to initialize a new Hot Standby node
with Streaming Replication withou the need for stop or even restarting the
master.
Of course the master is already with the needed SR configs.
I know I have to use pg_start_backup/pg_stop_backup, but i'd like
some tips, or a link to some tutorial, with the order of the steps.
I assume will be something like:
- configure Slave for SR
- pg_start_backup()
- rsync PGDATA to slave
- start PG on the slave
- pg_stop_backup()
Anything i'm thinking wrong?
Thanks in advance,
Gabriel
--
Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.
--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt
--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt
