Re: hello - hanging services

[Jean-Michel Bruenn <jean.bruenn@ip-minds.de>]

Hello,

thanks for your answer. Wouldn't it be a good improvement for runit,
if it would take care of hanging tasks, also? There's "run", "finish"
and the "log" stuff - wouldn't it be possible to add "check" as script,
which is running a command all X seconds and if it gets a response it
knows "ah okay, the service is still running" and if it gets no
response "oh, the service seems to have died, let's restart it"?

Of course, totally optional, up to the user whether to use that or not.

Difficult to implement?

Cheers

On Tue, 17 Aug 2010
13:13:55 -0400 (EDT) Charlie Brady
<charlieb-supervise@budge.apana.org.au> wrote:

> 
> On Tue, 17 Aug 2010, Jean-Michel Bruenn wrote:
> 
> > Hey, 
> > 
> > i'm curious what happens with hung(hanging?) services (or zombies) is it
> > possible with runit to detect those and restart the service?
> 
> hung/hanging services and zombies are different things. A zombie is a 
> process which doesn't exist - it's just a process remnant - a status 
> report which the kernel is hanging onto waiting for someone to ask for it. 
> A hung/hanging services is a real process, but one which isn't doing what 
> you want it to do. runit does not detect and restart those. It only 
> restarts processes which have died.


-- 
Jean-Michel Bruenn <jean.bruenn@ip-minds.de>