A sample Varnish Bash script.

varnish

#!/bin/bash
#PATH=/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/programs/varnish/sbin
HOST=`hostname | cut -d. -f1`
DAEMON='/programs/varnish/sbin/varnishd'
PROC="varnishd"
NAME="varnish"

# This list contains the values for project arg ($2) case statement
# The values should match vcl files in /data/conf/varnish/PROJECT.vcl
# Please keep it alphabetical
# Don't forget to update the switch below
PROJECTS="
wapo_projects
stage_data_politics
school_rankings
wapo_local
wapo_politics
wapo_generic
wapo_sports
wapo_national
wapo_data_politics
"

case "$2" in
    "wapo_projects")
        DAEMON_ARGS="-s malloc,500M -T 0.0.0.0:2050 -a 0.0.0.0:10050"
    ;;
    "stage_data_politics")
        DAEMON_ARGS="-s malloc,50M -T 0.0.0.0:2300 -a 0.0.0.0:10300"
    ;;
    "school_rankings")
        DAEMON_ARGS="-s malloc,250M -T 0.0.0.0:2250 -a 0.0.0.0:10250"
    ;;
    "wapo_local")
        DAEMON_ARGS="-s malloc,250M -T 0.0.0.0:2251 -a 0.0.0.0:10251"
    ;;
    "wapo_politics")
        DAEMON_ARGS="-s malloc,50M -T 0.0.0.0:2350 -a 0.0.0.0:10350"
    ;;
    "wapo_generic")
        DAEMON_ARGS="-s malloc,50M -T 0.0.0.0:2400 -a 0.0.0.0:10400"
    ;;
    "wapo_national")
        DAEMON_ARGS="-s malloc,250M -T 0.0.0.0:2500 -a 0.0.0.0:10500"
    ;;
    "wapo_sports")
        DAEMON_ARGS="-s malloc,250M -T 0.0.0.0:2450 -a 0.0.0.0:10450"
    ;;
    "wapo_data_politics")
        DAEMON_ARGS="-s malloc,250M -T 0.0.0.0:2300 -a 0.0.0.0:10300"
    ;;
    *)
        echo "You must provide a valid project name."
        echo "Choices are: $PROJECTS"
        exit 1
    ;;
esac

# use this if we can get access to local disk
VAR_ROOT=/programs/varnish/var/varnish
VAR_PATH=$VAR_ROOT/$2
PID_ROOT=$VAR_ROOT/run

PID_PATH="${PID_ROOT}/${2}.pid"
CONFIG_FILE="/data/conf/varnish/${2}.vcl"
DAEMON_ARGS="$DAEMON_ARGS -f $CONFIG_FILE -n $VAR_PATH -P $PID_PATH -p http_req_hdr_len=20000 -p http_resp_hdr_len=20000 -p thread_pool_min=200 -p thread_pool_max=4000 -p thread_pool_add_delay=2 -p thread_pools=8 -p cli_timeout=25 -p session_linger=50 -p lru_interval=20"

test -x $DAEMON || echo "$DAEMON is not executable"
test -x $DAEMON || exit 1
test -d $VAR_PATH || echo "The directory $VAR_PATH does not exist"
test -d $VAR_PATH || exit 1
test -d $PID_ROOT || echo "The directory $PID_ROOT does not exist"
test -d $PID_ROOT || exit 1
test -e $CONFIG_FILE || echo "The file $CONFIG_FILE does not exist"
test -e $CONFIG_FILE || exit 1

# set the process count
# figure out if there is a pid and if that pid is active
if test -e $PID_PATH
then
    PID=`cat $PID_PATH`
    if [ $PID ]
    then
        PID_COUNT=`ps $PID | wc -l`
        PID_COUNT=`expr $PID_COUNT - 1`
    else
        PID_COUNT=0
    fi
else
    PID_COUNT=0
fi
set -e

case "$1" in
    start)
        if [ $PID_COUNT == 0 ]
        then
            echo $DAEMON $DAEMON_ARGS
            $DAEMON $DAEMON_ARGS
        else
            echo "Pid file exists and pid ($PID) is active."
            echo "Is $NAME already running?"
        fi
    ;;
    stop)
        if [ $PID_COUNT == 0 ]
        then
            echo "No processes matching '$PROC' found."
        else
            kill -9 $PID && echo > $PID_PATH
        fi
    ;;
    restart)
        if [ $PID_COUNT == 0 ]
        then
            echo "No processes matching '$PROC' found."
            echo "Try start instead"
        else
            echo "Shutting down"
            kill -9 $PID
            echo "Restarting"
            $DAEMON $DAEMON_ARGS
        fi
    ;;
    *)
        echo "Usage: $NAME start|stop|restart"
    ;;
esac
exit 0