Re: Time to drop RADIUS support?

On Sat, Jan 24, 2026 at 6:50 AM Jacob Champion
<jacob(dot)champion(at)enterprisedb(dot)com> wrote:
> On Fri, Jan 23, 2026 at 8:30 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > > I don't think removing it entirely from all back branches is a good
> > > idea, without first making sure that there are no users.
> >
> > Agreed, we can't pull it from the back branches. But I'm in favor of
> > pulling it from HEAD if we document how to use PAM-based RADIUS
> > instead. I agree with Thomas' argument that the cost-benefit ratio
> > of fixing our implementation would be poor.
>
> +1.

Great, it sounds like we have a plan. I think the wiki might be a
good place for that documentation. The details are likely to change,
and I wouldn't want to have to maintain that information in-tree, so I
created some PAM how-to documentation at
https://wiki.postgresql.org/wiki/RADIUS after testing on Debian and
FreeBSD. We could point to that from the 19 release notes and in the
deprecation notice added to the documentation for 14-18, calling it
"community-maintained guidance on migration to supported
configurations". Do we need to keep any trace of this in the 19 docs,
and if so, where? A new tombstone section?