Horton

Re: whichever ALTER SYSTEM thread is the right one

Stephen Frost <sfrost@snowman.net>

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From: Stephen Frost <sfrost@snowman.net>
To: Bruce Momjian <bruce@momjian.us>
Cc: Josh Berkus <josh@agliodbs.com>, Tom Lane <tgl@sss.pgh.pa.us>, Andres Freund <andres@2ndquadrant.com>, Greg Stark <stark@mit.edu>, Alvaro Herrera <alvherre@2ndquadrant.com>, Fujii Masao <masao.fujii@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Amit Kapila <amit.kapila@huawei.com>, Dimitri Fontaine <dimitri@2ndquadrant.fr>, pgsql-hackers@postgresql.org
Date: 2013-08-05T18:13:41Z
Lists: pgsql-hackers 
* Bruce Momjian (bruce@momjian.us) wrote:
> On Mon, Aug  5, 2013 at 02:02:50PM -0400, Stephen Frost wrote:
> > * Josh Berkus (josh@agliodbs.com) wrote:
> > > I'll also point out that some of our settings only really "work" in
> > > combinations of two or more settings.  For example, one doesn't want to
> > > set archive_mode = on unless one is setting archive_command as well.
> > 
> > And one doesn't want to set archive_command w/o doing some kind of setup
> > work on the server in question, perhaps setting up SSH keys or putting a
> > decent shell script in place to be called from archive_command.  That's
> > part of my issue w/ this- the parameters which can't be set up correctly
> > through sole use of "ALTER SYSTEM" should be excluded from it and
> > instead set up through a config file.
> 
> Yes, but many setting changes don't require file system changes.

Agreed, and those are the changes which would make sense to allow
through ALTER SYSTEM (or ALTER CLUSTER, or whatever)- settings which
don't require file system, network, etc, changes.

	Thanks,

		Stephen