Re: automatic startup

[Chris Robertson <crobertson@xxxxxxx>]

Melanie Pfefer wrote:
> Squid Cache: Version 2.6.STABLE3
> OS: 2.6.11-1.1369_FC4
>
>
> Hi,
>
> How to enable automatic startup for squid upon system
> boot?
>
>   

Assuming that you installed Squid from an RPM, "chkconfig squid on" will 
do the trick. 

Otherwise, find attached a startup script that should work.  I've 
mangled it from what I use to reference the default Squid path 
(/usr/local/squid), which may or may not work for your set up.  In any 
case, copy the file to /etc/init.d, change any paths that need changing, 
and run a "service squid status".  If that gives you the expected 
result, "chkconfig squid on" should set squid to start (and stop) 
automatically.

"Should" is the operative word in the above paragraph.

The last, simplest and least graceful option is " echo 
/usr/local/squid/sbin/squid >> /etc/rc.local".  That will call the squid 
binary every time your system starts.  No guarantees that Squid will be 
shut down properly on system shutdown/restart.

> thx
>   

Chris

#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local
[root@sas squid]# cat /etc/init.d/squid 
#!/bin/bash
# squid         This shell script takes care of starting and stopping
#               Squid Internet Object Cache
#
# chkconfig: - 90 25
# description: Squid - Internet Object Cache. Internet object caching is \
#       a way to store requested Internet objects (i.e., data available \
#       via the HTTP, FTP, and gopher protocols) on a system closer to the \
#       requesting site than to the source. Web browsers can then use the \
#       local Squid cache as a proxy HTTP server, reducing access time as \
#       well as bandwidth consumption.
# pidfile: /usr/local/squid/logs/squid.pid
# config: /usr/local/squid/etc/squid.conf

PATH=/usr/bin:/sbin:/bin:/usr/sbin
export PATH

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

# check if the squid conf file is present
[ -f /usr/local/squid/etc/squid.conf ] || exit 0

if [ -f /etc/sysconfig/squid ]; then
  . /etc/sysconfig/squid
fi

# don't raise an error if the config file is incomplete 
# set defaults instead:
SQUID_OPTS=${SQUID_OPTS:-"-D"}
SQUID_PIDFILE_TIMEOUT=${SQUID_PIDFILE_TIMEOUT:-20}
SQUID_SHUTDOWN_TIMEOUT=${SQUID_SHUTDOWN_TIMEOUT:-100}

# determine the name of the squid binary
[ -f /usr/local/squid/sbin/squid ] && SQUID=/usr/local/squid/sbin/squid
[ -z "$SQUID" ] && exit 0

prog="squid"

# determine which one is the cache_swap directory
CACHE_SWAP=`sed -e 's/#.*//g' /usr/local/squid/etc/squid.conf | \
        grep cache_dir |  awk '{ print $3 }'`
[ -z "$CACHE_SWAP" ] && CACHE_SWAP=/usr/local/squid/var/cache

RETVAL=0

start() {
    for adir in $CACHE_SWAP; do
        if [ ! -d $adir/00 ]; then 
             echo -n "init_cache_dir $adir... "
             $SQUID -z -F -D > /usr/local/squid/logs/squid.out 2>&1
        fi
    done
    echo -n $"Starting $prog: "
    /bin/touch /usr/local/squid/logs/squid.pid
    /bin/chown squid /usr/local/squid/logs/squid.pid
    $SQUID $SQUID_OPTS > /usr/local/squid/logs/squid.out 2>&1
    RETVAL=$?
    if [ $RETVAL -eq 0 ]; then 
       timeout=0;
       while : ; do
          [ ! -f /usr/local/squid/logs/squid.pid ] || break
          if [ $timeout -ge $SQUID_PIDFILE_TIMEOUT ]; then
             RETVAL=1
             break
          fi
          sleep 1 && echo -n "."
          timeout=$((timeout+1))
       done
    fi
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/squid
    [ $RETVAL -eq 0 ] && echo_success
    [ $RETVAL -ne 0 ] && echo_failure
    echo
    return $RETVAL
}

stop() {
    echo -n  $"Stopping $prog: "
    $SQUID -k check > /usr/local/squid/logs/squid.out 2>&1
    RETVAL=$?
    if [ $RETVAL -eq 0 ] ; then
        $SQUID -k shutdown > /usr/local/squid/logs/squid.out 2>&1
        rm -f /var/lock/subsys/squid
        timeout=0
        while : ; do
                [ -f /usr/local/squid/logs/squid.pid ] || break
                if [ $timeout -ge $SQUID_SHUTDOWN_TIMEOUT ]; then
                    echo
                    return 1
                fi
                sleep 2 && echo -n "." 
                timeout=$((timeout+2))
        done
        echo_success
        echo 
    else
        echo_failure
        echo
    fi
    return $RETVAL
}    

reload() {
    $SQUID $SQUID_OPTS -k reconfigure > /usr/local/squid/logs/squid.out 2>&1
}

restart() {
    stop
    start
}    

condrestart() {
    [ -e /var/lock/subsys/squid ] && restart || :
}

rhstatus() { 
    status $SQUID
    $SQUID -k check
}

probe() {
    return 0
}    

case "$1" in
start)
    start
    ;;

stop)
    stop
    ;;

reload)
    reload
    ;;

restart)
    restart
    ;;

condrestart)
    condrestart
    ;;

status)
    rhstatus
    ;;

probe)
    exit 0
    ;;

*)
    echo $"Usage: $0 {start|stop|status|reload|restart|condrestart}"
    exit 1
esac

exit $?