Upstart configuration. Starts celeryd when mongodb is running. Tested in Ubuntu 12.04 Contains /etc/init/celery.conf and /etc/default/celeryd

celery.conf

start on started mongodb
stop on stopping mongodb

# limit the retries to max 15 times with timeouts of 5 seconds
respawn limit 15 5

# Time to wait between sending TERM and KILL signals
kill timeout 20

script
   DEFAULT_NODE="celery"
   DEFAULT_PID_FILE="/var/run/celery/$DEFAULT_NODE.pid"
   DEFAULT_LOG_FILE="/var/log/celery/$DEFAULT_NODE.log"
   DEFAULT_LOG_LEVEL="INFO"
   DEFAULT_CELERYD="/usr/local/bin/celeryd"

   CELERY_DEFAULTS=${CELERY_DEFAULTS:-"/etc/default/celeryd"}
   
   test -f "$CELERY_DEFAULTS" && . "$CELERY_DEFAULTS"

   CELERYD_LOG_DIR=`dirname $CELERYD_LOG_FILE`
   CELERYD_PID_DIR=`dirname $CELERYD_PID_FILE`
   
   CELERYD_LOG_LEVEL=${CELERYD_LOG_LEVEL:-${CELERYD_LOGLEVEL:-$DEFAULT_LOG_LEVEL}}
   CELERYD=${CELERYD:-$DEFAULT_CELERYD}
   CELERYD_NODE=${CELERYD_NODE:-$DEFAULT_NODE}

   # Extra start-stop-daemon options, like user/group.
   if [ -n "$CELERYD_USER" ]; then
       DAEMON_OPTS="$DAEMON_OPTS --chuid $CELERYD_USER"
   fi
   if [ -n "$CELERYD_GROUP" ]; then
       DAEMON_OPTS="$DAEMON_OPTS --group $CELERYD_GROUP"
   fi

   mkdir -p $CELERYD_LOG_DIR
   mkdir -p $CELERYD_PID_DIR
   chown $CELERYD_USER:$CELERYD_GROUP $CELERYD_LOG_DIR
   chown $CELERYD_USER:$CELERYD_GROUP $CELERYD_PID_DIR


   exec start-stop-daemon --start $DAEMON_OPTS        \
	--exec $CELERYD --                     \
        --pidfile="$CELERYD_PID_FILE"      \
        --logfile="$CELERYD_LOG_FILE"      \
        --loglevel="$CELERYD_LOG_LEVEL"    \
	--workdir="$CELERYD_CHDIR"         \
        $CELERYD_OPTS
end script

celeryd

# Name of node to start
# here we have a single node called w1
CELERYD_NODE="w1"

# Where to chdir at start.
CELERYD_CHDIR="/var/www/sas-web/sas/"

# Extra arguments to celeryd
CELERYD_OPTS="--app=jobs -B --schedule=/var/run/celery/celerybeat-schedule"

CELERYD_LOG_FILE="/var/log/celery/$CELERYD_NODE.log"
CELERYD_PID_FILE="/var/run/celery/$CELERYD_NODE.pid"

# Workers should run as an unprivileged user.
CELERYD_USER="www-data"
CELERYD_GROUP="www-data"