supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Charlie Brady <charlieb-supervision@budge.apana.org.au>
Cc: supervision@list.skarnet.org
Subject: Re: Runit on sl3
Date: Fri, 26 May 2006 16:18:11 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.61.0605261604050.18848@e-smith.charlieb.ott.istop.com> (raw)
In-Reply-To: <7231C15EAC2F164CA6DC326D97493C8B01C1DE38@exchange35.fed.cclrc.ac.uk>


On Fri, 26 May 2006, Nandakumar, R (Raja) wrote:

> I would like to know if there have been any known problems while using
> the runit class of commands on scientific linux. Two of the problems we
> see are :
>
> 1. runsv does not automatically fork and make itself a background job.

Why do you see that as a problem? runsv should only be run by runsvdir, 
which will then wait for it to complete.

> 2. runsv and runsvdir occasionally die

Do you know why they do? My guess is that you have had severe memory 
overcommitment, and they are being killed by the "Out of Memory" killer of 
the linux kernel. They won't have been the only processes killed (but 
perhaps they would be the most noticable ones*).

But if there's any other cause of them dying, then I'm 
sure Gerrit would be interested to know.

---
Charlie

* runsv will be replaced automatically, but service will be in down state
   if there is a "down" file, whereas it might have been running when the
   runsv died/was killed. Hence, death of runsv might be quite noticeable.



  reply	other threads:[~2006-05-26 20:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-26  9:56 Nandakumar, R (Raja)
2006-05-26 20:18 ` Charlie Brady [this message]
2006-05-26 20:59   ` Nandakumar, R (Raja)
2006-05-26 22:43     ` Charlie Brady
2006-05-26 22:47       ` Nandakumar, R (Raja)
2006-05-26 22:59         ` Charlie Brady

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