Re: Daemon mode VS non daemon mode

Hi,

On Tue, 28 Mar 2000, Henrik Nordstrom wrote:

> Jimmy Stewpot wrote:
>
> > are there any major benefits in using Squid as a daemon as apposed
> > to using it as a non-daemon. This has confused me as i am unsure
> > how much benefits there are in either way of running squid.
>
> The benefit of using the daemon mode compared to use the RunCache
> wrapper script is that it is easier to shut down the daemon mode. Simply
> squid -k shutdown will do it for you, while RunCache will automatically
> restart Squid if you do so. To shut down a RunCache monitored Squid you
> must first kill the RunCache script, and then shut down Squid.
>
> The benefit of using the RunCache wrapper is that you can easily add
> triggers when Squid is restarted. Triggers I have used include automated
> emails, and even automated stack traces from core dumps if any.

I like having RunCache monitor squid and restarting it when
necessary. However I also like being able to stop RunCache from restarting
oc occasions. That's why I modified RunCache to that below. To stop squid
altogether:

        touch /tmp/squid.stop
        squid -k shutdown
        killall RunCache # or whatever
        rm /tmp/squid.stop

-------------------------------------------------------------------------------
#!/bin/sh
#
# $Id: RunCache,v 1.3 1999/10/03 01:35:46 root Exp $

prefix=/squid
exec_prefix=${prefix}
logdir=${prefix}/logs
PATH=${exec_prefix}/bin:/bin:/usr/bin
export PATH
lockfile=/tmp/squid.stop

conf=""
if test "$1" ; then
        conf="-f $1"
        shift
fi

failcount=0
while : ; do
        if [ -f $lockfile ]; then
                echo "Lockfile ($lockfile) found - sleeping"
                echo "squid locked at `date`" >> $logdir/squid.out 2>&1
                while [ -f $lockfile ]; do
                        sleep 1
                done
                echo "squid released at `date`" >> $logdir/squid.out 2>&1
        fi
        echo "Running: squid -sY $conf" >> $logdir/squid.out 2>&1
        echo "Startup: `date`" >> $logdir/squid.out
        start=`date '+%d%H%M%S'`
        squid -NsY $conf >> $logdir/squid.out 2>&1
        stop=`date '+%d%H%M%S'`
        t=`expr $stop - $start`
        if test 0 -le $t -a $t -lt 5 ; then
                failcount=`expr $failcount + 1`
        else
                failcount=0
        fi
        if test $failcount -gt 5 ; then
              echo "RunCache: EXITING DUE TO REPEATED, FREQUENT FAILURES" >&2
                exit 1
        fi
        sleep 10
done
-------------------------------------------------------------------
Colin
Received on Mon Mar 27 2000 - 23:30:58 MST