[CentOS] Removing respawning process from inittab w/o killing it

Timo Schoeler timo.schoeler at riscworks.net
Wed Nov 18 10:33:42 UTC 2009


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thus William L. Maltby spake:
| On Wed, 2009-11-18 at 10:56 +0100, Timo Schoeler wrote:
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|> Hi list,
|>
|> I need to remove an entry of inittab which is used to (re)spawn a
process:
|>
|> mydemon:2345:respawn:/usr/sbin/mydemon >/dev/null 2>&1
|>
|> So, I would comment out that entry and reload init running ``telinit
|> q''. IIRC, this would lead to the currently running daemon being killed.
|> I don't want to /try/ whether I'm right, as those are production systems.
|>
|> Is there any possibility (given that ``telinit q'' kills the running
|> process) to 'keep the process alive' _and_ reload init?
|
| If I understand what "man telinit" intends, it looks like the "-u" or
| "-U" might do what you want.

It says:

U or u tell  init  to  re-execute itself (preserving the state). No re-
examining of /etc/inittab file happens. Run level should be  one
of Ss12345, otherwise request would be silently ignored.

I'll try it; it doesn't seem to touch the running state, however, it
also doesn't re-examine /etc/inittab (but that is what I actually want
it to do).

| Test it on some local desktop system since you can't test on your
| production?

I prepare an equal setup in VirtualBox, so I can test beforehand.

Thanks,

Timo

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