| From: | Ian Barwick <ian(dot)barwick(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions |
| Date: | 2019-08-02 23:18:00 |
| Message-ID: | 1212f308-8140-32c8-2b5c-110f0f352f2d@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 8/3/19 8:09 AM, Tom Lane wrote:
> I wrote:
>> Andres Freund <andres(at)anarazel(dot)de> writes:
>>> I think a commandline tool to perform the equivalent of ALTER SYSTEM on
>>> a shutdown cluster would be a great tool.
>
>> Perhaps, but ...
>
>>> Obviously this is widely out of scope for v12.
>
>> ... this.
>
> Although, there's always
>
> echo "alter system set work_mem = 4242;" | postgres --single
>
> Maybe we could recommend that to tools that need to do
> potentially-repetitive modifications?
The slight problem with that, particularly with the use-case
I am concerned with (writing replication configuration), is:
[2019-08-03 08:14:21 JST] FATAL: 0A000: standby mode is not supported by single-user servers
(I may be missing something obvious of course)
Regards
Ian Barwick
--
Ian Barwick https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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