docker.service

#!/bin/sh
#
#       /etc/rc.d/init.d/docker
#
#       Daemon for docker.com
#
# chkconfig:   2345 95 05
# description: Daemon for docker.com

### BEGIN INIT INFO
# Provides:       docker
# Required-Start: $network cgconfig
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop:  0 1 6
# Short-Description: start and stop docker
# Description: Daemon for docker.com
### END INIT INFO

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

prog="docker"
unshare=/usr/bin/unshare
exec="/usr/bin/$prog"
pidfile="/var/run/$prog.pid"
lockfile="/var/lock/subsys/$prog"
logfile="/var/log/$prog"

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
[ -e /etc/sysconfig/${prog}-storage ] && . /etc/sysconfig/${prog}-storage

[ -n "${DAEMON_MAXFILES}" ] && ulimit -n "${DAEMON_MAXFILES}"

# Additional start options for the Docker daemon can
# be defined in the $OPTIONS variable in /etc/sysconfig/docker,
# which is also the variable name referenced by the systemd unit.
# If $OPTIONS is not defined, we set it to the value of $other_args,
# which is the variable name expected by the upstream sysvinit script.
OPTIONS="${OPTIONS:-${other_args}}"


prestart() {
    service cgconfig status > /dev/null

    if [[ $? != 0 ]]; then
        service cgconfig start
    fi

}

start() {
    if [ ! -x $exec ]; then
      if [ ! -e $exec ]; then
        echo "Docker executable $exec not found"
      else
        echo "You do not have permission to execute the Docker executable $exec"
      fi	      
      exit 5
    fi

    check_for_cleanup

    if ! [ -f $pidfile ]; then
        prestart
        printf "Starting $prog:\t"
        echo "\n$(date)\n" >> $logfile
        "$unshare" -m -- nohup $exec daemon ${OPTIONS} ${DOCKER_STORAGE_OPTIONS} &>> $logfile &
        pid=$!
        touch $lockfile
        # wait up to 10 seconds for the pidfile to exist.  see
        # https://github.com/docker/docker/issues/5359
        tries=0
        while [ ! -f $pidfile -a $tries -lt 10 ]; do
            sleep 1
            tries=$((tries + 1))
            echo -n '.'
        done
        if [ ! -f $pidfile ]; then
          failure
          echo
          exit 1
        fi
        success
        echo
    else
        failure
        echo
        printf "$pidfile still exists...\n"
        exit 7
    fi
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p $pidfile -d 300 $prog
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    stop
    start
}

reload() {
    restart
}

force_reload() {
    restart
}

rh_status() {
    status -p $pidfile $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}


check_for_cleanup() {
    if [ -f ${pidfile} ]; then
        /bin/ps -fp $(cat ${pidfile}) > /dev/null || rm ${pidfile}
    fi
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
        exit 2
esac

exit $?