From: Jerry Sievers <gsievers19@comcast.net>
To: Telium Technical Support <support@telium.ca>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: PostgreSQL recovery file syntax, ver 8.4 vs ver 9.5
Date: Tue, 20 Feb 2018 17:11:03 -0600
Message-ID: <871shf6yuw.fsf@jsievers.enova.com> (raw)
In-Reply-To: <002001d3aa95$d25940b0$770bc210$@telium.ca>
References: <000301d3aa8b$a70c17c0$f5244740$@telium.ca>
<0f2b60dc-b095-d04c-c242-b79fdcacd32b@2ndquadrant.com>
<002001d3aa95$d25940b0$770bc210$@telium.ca>
"Telium Technical Support" <support@telium.ca> writes:
> I actually need the log shipping so I can decide whether or not I want the
> standby to accept data from the master (In case of master corruption). I
> have clients on ver 8.4 and 9.5 so I'm trying to figure out if I can share
> config settings between clients.
Probably if your don't mind playing to the least version.
FYI that later versions such as 9.5 support a lag time as
recovery_min_apply_delay which might make unnecessary any external foo
to hold back WAL files till some ageing time.
>
> -----Original Message-----
> From: Peter Eisentraut [mailto:peter.eisentraut@2ndquadrant.com]
> Sent: Tuesday, February 20, 2018 4:44 PM
> To: Telium Technical Support <support@telium.ca>;
> pgsql-admin@lists.postgresql.org
> Subject: Re: PostgreSQL recovery file syntax, ver 8.4 vs ver 9.5
>
> On 2/20/18 15:44, Telium Technical Support wrote:
>> In postgreSQL version 8.4 it seems that you can place the db server
>> into warm standby mode with the following setting in recovery.conf
>>
>> restore_command = 'pg_standby archiveDir %f %p %r'
>>
>> In postgreSQL version 9.5 I see the same option, but I also see what
>> appears to be an alternative syntax in recovery.conf:
>>
>> standby_mode = (boolean)
>> trigger_file = (string)
>>
>> So is this new syntax an alternative to the old syntax (both are
>> accepted by PGSQL)? Any benefit to the new syntax?
>>
>> Does the new syntax mean that I can use the restore_command setting as
>> well (to use my own copy command)?
>
> A lot has changed between 8.4 and 9.5. Hot standby, streaming replication,
> replication slots, and so on. You can continue to use pg_standby, but the
> new facilities are better in many ways.
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
p: 312.241.7800
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To: pgsql-admin@postgresql.org
Cc: gsievers19@comcast.net, support@telium.ca, pgsql-admin@lists.postgresql.org
Subject: Re: PostgreSQL recovery file syntax, ver 8.4 vs ver 9.5
In-Reply-To: <871shf6yuw.fsf@jsievers.enova.com>
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