Re: [PATCH] Make pg_basebackup configure and start standby

On Jul 1, 2012, at 5:44 PM, Magnus Hagander wrote:

> On Sun, Jul 1, 2012 at 1:02 PM, Boszormenyi Zoltan <zb@cybertec.at> wrote:
>> Hi,
>>
>> attached is a patch that does $SUBJECT.
>>
>> It's a usability enhancement, to take a backup, write
>> a minimalistic recovery.conf and start the streaming
>> standby in one go.
>
> I like the writing of recovery.conf. In fact, I had it in my code at
> one very early point and took it out in order to get a clean patch
> ready :)
>
> But I think that part is lacking in functionality: AFAICT it's
> hardcoded to only handle host, port, user and password. What about
> other connection parameters, likely passed to pg_basebackup through
> the environment in that case? isn't that quite likely to break the
> server later?
>


one option would be to check the environments and take them if needed.
however, i am not sure if this is a good idea either - just thing of PGPASSWORD or so. do we really want to take it and
writeit to a file straight away? i guess there are arguments for both ideas. 

still, i guess your argument is a reasonable one.



> Maybe the proper way around that is to provide the ability for
> pg_basebackup to take a full connection string, just like we allow
> psql to do?
>


this would make things redundant. i am quite sure some users might not get the distinction straight away.


>
>
> I'm not sure we should go the way of providing the "start slave".
> Given thta how you want to start the slave differs so much on
> platforms. The most glaring example is on windows you really need to
> *start the service* rather than use pg_ctl. Sure, you can document
> your way around that, but I'm not sure the functionality added is
> really worth it. What about all the other potential connection
> parameters.

regards,
    hans


--
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de