Date: Fri, 14 Mar 2003 07:47:15 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Vijay.Singh@nokia.com Cc: questions@FreeBSD.ORG Subject: Re: init and process restart Message-ID: <20030314074715.GA86998@happy-idiot-talk.infracaninophi> In-Reply-To: <4D7B558499107545BB45044C63822DDE01AF2A38@mvebe001.americas.nokia.com> References: <4D7B558499107545BB45044C63822DDE01AF2A38@mvebe001.americas.nokia.com>
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On Thu, Mar 13, 2003 at 02:52:42PM -0800, Vijay.Singh@nokia.com wrote:
> Hi. Is it possible to use init to restart some user critical processes if they die. Has any work been done in this area. Please CC me.
You mean in the same way that you can use /etc/inittab on SysV style
machines? It's possible to do under *BSD, although not exactly
equivalent, by editing /etc/ttys.
Note that there's
* No concept of run-levels under BSD. Your process will be started
on bootup by init as soon as the machine goes multiuser and
continue running until init (and the machine) shuts down.
* The process has to be associated with a tty. Furthermore, it
will prevent you running getty(8) on that tty, thus blocking it
as a place for users to login.
You should also consider Dan Bernstein's daemontools package,
available in ports as sysutils/daemontools:
http://pobox.com/~djb/daemontools.html
specifically the supervise and svc programs.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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