Re: BUG #17757: Not honoring huge_pages setting during initdb causes DB crash in Kubernetes

Andres Freund <andres@anarazel.de> writes:
> It's a fault of the environment if mmap(MAP_HUGETLB) causes a SIGBUS. Normally
> huge_pages = try is harmless, because it'll just fall back. That source of
> SIGBUSes needs to be fixed regardless of anything else - plenty allocators try
> to use huge pages for example, so you'll run into problems regardless of
> postgres' default.

That seems likely to me too.

> That said, I'm for allowing to specify options to initdb.

Yeah, I think that has enough other potential applications to be worth
doing.  Here's a quick draft patch (sans user-facing docs as yet).
It injects any given values into postgresql.auto.conf, not
postgresql.conf proper.  I did that mainly because the latter looked
beyond the abilities of the primitive string-munging code we have in
there, but I think it can be argued to be a reasonable choice anyway.

			regards, tom lane