Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
Date
Msg-id 20190624190625.GA10524@alvherre.pgsql
Whole thread Raw
In response to Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
List pgsql-hackers
On 2019-Jun-24, Robert Haas wrote:

> On Sat, Jun 22, 2019 at 5:13 PM Stephen Frost <sfrost@snowman.net> wrote:
> > All that said, whatever code it is that we write for pg_basebackup to do this properly should go into our client
sidelibrary, so other tools can leverage that and avoid having to write it themselves.
 
> 
> That is probably only going to help people who are writing in C (or
> maybe some close family member) and a lot of tools for managing
> PostgreSQL will be written in scripting languages.

But we already have ALTER SYSTEM, so why do we need to write it again?
You just need to check whether the system is running: if it is, connect
and do "ALTER SYSTEM".  If it isn't, do `echo ALTER SYSTEM | postgres
--single`.  Maybe we can embed smarts to do that in, say, pg_ctl; then
everybody has access to it.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



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