Re: [squid-users] Refusing connections during squid -k reconfigure

On Thu, Jan 31, 2008 at 08:36:05PM +0900, Adrian Chadd wrote:
> On Thu, Jan 31, 2008, Amos Jeffries wrote:
> > If the delay between starting and stopping is long enough and can be
> > done with X + random-time offset. Squid will cope with some helpers
> > simply stopping and resumes them.
>
> Yeah, the trouble is that you can't kill them all or Squid will die
> complaining the helpers are dying too quickly.

Yep, I've definitely run into that condition. =)

Squid recycles itself, but this causes the same (if not worse) downtime
as the one I'm trying to avoid.

> Hm, I've always wanted to fix that pause during reconfigure and
> rotate. Of course, reconfigure's "deny accepting connections" is
> probably it closing and re-opening all its listen() sockets..

That's what my reading of cache.log suggested - that Squid closes its
listening socket, restarts its children (which can be slow), and only
then re-opens the socket. Anyone trying to connect during the restart
gets a TCP RST.

--Emil
Received on Thu Jan 31 2008 - 15:41:03 MST