Re: graceful restart under runit

[Alex Efros <powerman@powerman.asdfGroup.com>]

Hi!

On Thu, Nov 16, 2006 at 07:48:55PM -0500, Paul Jarc wrote:
> > Another option - you can ask runsv to 'x' (Exit) instead of 't' (Term).
> > In this case runsv will send SIGTERM to your process, which can process it
> > by just closing listening socket, waiting until existing connection finish
> > and then exit.
> > After few (up to 5) seconds runsv will be started again by runsvdir, and
> > so start second process of that server (which will open listening socket
> > again).
> This seems worse than t.  In either case, new connections are refused
> while the old process cleans up its current connections, but with x,
> new connections are also refused for up to 5 seconds more.

If old server continue accepting new connections for 5 seconds after
receiving SIGTERM this solve 'connection refused' issue. (If new server
will be started after 1 second, for example, then in next 4 seconds both
server will have open listening socket and some connections will be
accepted by first server and some by second AFAIK - I don't see something
really wrong with this.)

-- 
			WBR, Alex.