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#!/bin/sh
# Short-Description: Create lightweight, portable, self-sufficient containers.
# Description:
# Docker is an open-source project to easily create lightweight, portable,
# self-sufficient containers from any application. The same container that a
# developer builds and tests on a laptop can run at scale, in production, on
# VMs, bare metal, OpenStack clusters, public clouds and more.
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
BASE=docker
UNSHARE=/usr/bin/unshare
DOCKER=/usr/bin/$BASE
DOCKER_PIDFILE=/var/run/$BASE.pid
DOCKER_LOG=/var/log/docker.log
DOCKER_OPTS=
if [ -f /etc/default/$BASE ]; then
. /etc/default/$BASE
fi
# Check docker is present
if [ ! -x $DOCKER ]; then
echo "$DOCKER not present or not executable"
exit 1
fi
docker_start() {
echo "starting $BASE ..."
if [ -x ${DOCKER} ]; then
# If there is an old PID file (no docker running), clean it up:
if [ -r ${DOCKER_PIDFILE} ]; then
if ! ps axc | grep docker 1> /dev/null 2> /dev/null ; then
echo "Cleaning up old ${DOCKER_PIDFILE}."
rm -f ${DOCKER_PIDFILE}
fi
fi
nohup "${UNSHARE}" -m -- ${DOCKER} -d -p ${DOCKER_PIDFILE} ${DOCKER_OPTS} >> ${DOCKER_LOG} 2>&1 &
fi
}
# Stop docker:
docker_stop() {
echo "stopping $BASE ..."
# If there is no PID file, ignore this request...
if [ -r ${DOCKER_PIDFILE} ]; then
kill $(cat ${DOCKER_PIDFILE})
fi
}
# Restart docker:
docker_restart() {
docker_stop
docker_start
}
case "$1" in
'start')
docker_start
;;
'stop')
docker_stop
;;
'restart')
docker_restart
;;
'status')
if [ -f ${DOCKER_PIDFILE} ] && ps -o cmd $(cat ${DOCKER_PIDFILE}) | grep -q $BASE ; then
echo "status of $BASE: running"
else
echo "status of $BASE: stopped"
fi
;;
*)
echo "usage $0 start|stop|restart|status"
esac
exit 0
|
