Re: Temporarily suspend a user account?

David G Johnston <david(dot)g(dot)johnston(at)gmail(dot)com> writes:

> On Fri, Feb 6, 2015 at 2:29 PM, Felipe Gasper [via PostgreSQL] <[hidden email]> wrote:
>
> On 6 Feb 2015 3:15 PM, David G Johnston wrote:
>
> > Felipe Gasper wrote
> >> Hello,
> >>
> >> Is there a way to temporarily suspend a user account?
> >>
> >> I would prefer not to revoke login privileges since that will break
> >> things that mine pg_users and pg_shadow.
> >>
> >> I also am trying to find something that is completely reversible, so
> >> something like setting connection limit to 0, which would lose a
> >> potentially customized connection limit, doesn’t work.
> >>
> >> We do this in MySQL by reversing the password hash then running FLUSH
> >> PRIVILEGES; however, that doesn’t seem to work in PostgreSQL/pg_authid
> >> as some sort of cache prevents this from taking effect.
> >>
> >> Has anyone else solved this issue? Thank you!
> >
> > Personally untested:
> >
> > ALTER ROLE role_name VALID UNTIL 'timestamp' --i.e., set that to sometime in
> > the past
> >
>
> This doesn’t work, either, because it will clobber any custom expiration
> time for the role …
>
> -FG 
>
> ​Since everything about a role can be customized, and there is no simple "enabled" boolean, you need to take a known value, cache it somewhere, make your change, then
> restore the cached value; or just edit pg_hba.conf and add reject entries for the role in question.

Here we go...

disable: update pg_authid set rolpassword = rolpassword || '.disabled' where rolname = 'foo';

enable: update pg_authid set rolpassword = rtrim(rolpassword, 'disabled') where rolname = 'foo';

>
> David J.
> ​
>  
>
> ------------------------------------------
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>

--
Jerry Sievers
Postgres DBA/Development Consulting
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