question about ordering of lines in rc.conf
pauls at utdallas.edu
Sun Dec 9 09:58:43 PST 2007
--On December 9, 2007 5:31:59 PM +0000 Pollywog <lists-fbsd at shadypond.com>
> It appears that the order of the *_enable="YES" lines in /etc/rc.conf is
> important. I am looking at a HOWTO for HPLIP in which the author
> suggests adding two lines in a certain order.
> Since I recently had a problem with jabberd starting before myslq was
> ready to accept connections and I just found that jabberd_enable="YES"
> precedes mysql_enable="YES" in my rc.conf, I am wondering whether order
> is important. Can anyone provide an answer?
> I solved the problem I was having with jabberd but in a different way.
/etc/rc.conf is parsed by the daemon's startup script. So, the order of
things in /etc/rc.conf does not determine which daemon is started first.
That is done in /etc/rc.d and /usr/local/etc/rc.d. Daemons are started in
alphabetical order unless the startup script is preceded by a number but
they also honor the PROVIDE and REQUIRE keywords which determines what has
to start before a daemon can be started.
So, if you need a daemon to start before another daemon, rename the
startup script to begin with a number.
See man 8 rc, man 8 rcorder, especially this:
The scripts within each directory are executed in lexicographical
order. If a specific order is required, numbers may be used as a
prefix to the existing filenames, so for example 100.foo would be
executed before 200.bar; without the numeric prefixes the opposite
would be true.
Paul Schmehl (pauls at utdallas.edu)
Senior Information Security Analyst
The University of Texas at Dallas
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