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478fdaf933
- add `set -e` to make failing commands bail the script - remove trailing `exit 0` which is just extraneous anyhow - adjust `status_of_proc` options to pass in `$DOCKER_DESC` so we get consistently styled messages like `Docker is running` or `Docker is not running` or `could not access PID file for Docker` Signed-off-by: Andrew Page <admwiggin@gmail.com>
141 lines
3.3 KiB
Bash
Executable file
141 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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set -e
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### BEGIN INIT INFO
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# Provides: docker
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# Required-Start: $syslog $remote_fs
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# Required-Stop: $syslog $remote_fs
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# Should-Start: cgroupfs-mount cgroup-lite
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# Should-Stop: cgroupfs-mount cgroup-lite
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Create lightweight, portable, self-sufficient containers.
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# Description:
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# Docker is an open-source project to easily create lightweight, portable,
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# self-sufficient containers from any application. The same container that a
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# developer builds and tests on a laptop can run at scale, in production, on
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# VMs, bare metal, OpenStack clusters, public clouds and more.
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### END INIT INFO
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export PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
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BASE=$(basename $0)
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# modify these in /etc/default/$BASE (/etc/default/docker)
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DOCKER=/usr/bin/$BASE
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# This is the pid file managed by docker itself
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DOCKER_PIDFILE=/var/run/$BASE.pid
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# This is the pid file created/managed by start-stop-daemon
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DOCKER_SSD_PIDFILE=/var/run/$BASE-ssd.pid
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DOCKER_LOGFILE=/var/log/$BASE.log
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DOCKER_OPTS=
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DOCKER_DESC="Docker"
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# Get lsb functions
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. /lib/lsb/init-functions
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if [ -f /etc/default/$BASE ]; then
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. /etc/default/$BASE
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fi
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# see also init_is_upstart in /lib/lsb/init-functions (which isn't available in Ubuntu 12.04, or we'd use it)
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if [ -x /sbin/initctl ] && /sbin/initctl version 2>/dev/null | grep -q upstart; then
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log_failure_msg "$DOCKER_DESC is managed via upstart, try using service $BASE $1"
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exit 1
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fi
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# Check docker is present
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if [ ! -x $DOCKER ]; then
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log_failure_msg "$DOCKER not present or not executable"
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exit 1
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fi
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fail_unless_root() {
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if [ "$(id -u)" != '0' ]; then
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log_failure_msg "$DOCKER_DESC must be run as root"
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exit 1
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fi
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}
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cgroupfs_mount() {
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# see also https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount
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if grep -v '^#' /etc/fstab | grep -q cgroup \
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|| [ ! -e /proc/cgroups ] \
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|| [ ! -d /sys/fs/cgroup ]; then
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return
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fi
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if ! mountpoint -q /sys/fs/cgroup; then
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mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
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fi
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(
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cd /sys/fs/cgroup
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for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
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mkdir -p $sys
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if ! mountpoint -q $sys; then
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if ! mount -n -t cgroup -o $sys cgroup $sys; then
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rmdir $sys || true
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fi
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fi
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done
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)
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}
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case "$1" in
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start)
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fail_unless_root
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cgroupfs_mount
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touch "$DOCKER_LOGFILE"
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chgrp docker "$DOCKER_LOGFILE"
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ulimit -n 1048576
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if [ "$BASH" ]; then
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ulimit -u 1048576
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else
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ulimit -p 1048576
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fi
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log_begin_msg "Starting $DOCKER_DESC: $BASE"
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start-stop-daemon --start --background \
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--no-close \
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--exec "$DOCKER" \
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--pidfile "$DOCKER_SSD_PIDFILE" \
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--make-pidfile \
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-- \
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-d -p "$DOCKER_PIDFILE" \
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$DOCKER_OPTS \
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>> "$DOCKER_LOGFILE" 2>&1
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log_end_msg $?
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;;
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stop)
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fail_unless_root
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log_begin_msg "Stopping $DOCKER_DESC: $BASE"
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start-stop-daemon --stop --pidfile "$DOCKER_SSD_PIDFILE"
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log_end_msg $?
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;;
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restart)
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fail_unless_root
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docker_pid=`cat "$DOCKER_SSD_PIDFILE" 2>/dev/null`
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[ -n "$docker_pid" ] \
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&& ps -p $docker_pid > /dev/null 2>&1 \
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&& $0 stop
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$0 start
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;;
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force-reload)
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fail_unless_root
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$0 restart
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;;
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status)
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status_of_proc -p "$DOCKER_SSD_PIDFILE" "$DOCKER" "$DOCKER_DESC"
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;;
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*)
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echo "Usage: $0 {start|stop|restart|status}"
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exit 1
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;;
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esac
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