File openvswitch-controller.init of Package openvswitch
#!/bin/sh
#
# Copyright (c) 2011 Nicira Networks Inc.
# Copyright (c) 2007, 2009 Javier Fernandez-Sanguino <jfs@debian.org>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License with
# the Debian operating system, in /usr/share/common-licenses/GPL; if
# not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
#
### BEGIN INIT INFO
# Provides: openvswitch-controller
# Required-Start: $network $local_fs $remote_fs
# Required-Stop: $remote_fs
# Should-Start: $named
# Should-Stop: $null
# Default-Start: 2 3 5
# Default-Stop: 0 1 6
# Short-Description: Open vSwitch controller
### END INIT INFO
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/ovs-controller # Introduce the server's location here
NAME=ovs-controller # Introduce the short server's name here
DESC=ovs-controller # Introduce a short description here
LOGDIR=/var/log/openvswitch # Log directory to use
PIDFILE=/var/run/openvswitch/$NAME.pid
test -x $DAEMON || exit 0
. /lib/lsb/init-functions
# Default options, these can be overriden by the information
# at /etc/default/openvswitch-controller
DAEMON_OPTS="" # Additional options given to the server
DODTIME=10 # Time to wait for the server to die, in seconds
# If this value is set too low you might not
# let some servers to die gracefully and
# 'restart' will not work
LOGFILE=$LOGDIR/$NAME.log # Server logfile
#DAEMONUSER= # User to run the daemons as. If this value
# is set start-stop-daemon will chuid the server
# Include defaults if available
default=/etc/sysconfig/openvswitch-controller
if [ -f $default ] ; then
. $default
fi
# Check that the user exists (if we set a user)
# Does the user exist?
if [ -n "$DAEMONUSER" ] ; then
if getent passwd | grep -q "^$DAEMONUSER:"; then
# Obtain the uid and gid
DAEMONUID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $3}'`
DAEMONGID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $4}'`
else
echo "The user $DAEMONUSER, required to run $NAME does not exist."
exit 1
fi
fi
set -e
running_pid() {
# Check if a given process pid's cmdline matches a given name
pid=$1
name=$2
[ -z "$pid" ] && return 1
[ ! -d /proc/$pid ] && return 1
cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
# Is this the expected server
[ "$cmd" != "$name" ] && return 1
return 0
}
running() {
# Check if the process is running looking at /proc
# (works for all users)
# No pidfile, probably no daemon present
[ ! -f "$PIDFILE" ] && return 1
pid=`cat $PIDFILE`
running_pid $pid $DAEMON || return 1
return 0
}
start_server() {
if [ -z "$LISTEN" ]; then
echo "$default: No connection methods configured, controller disabled" >&2
exit 0
fi
if [ ! -d /var/run/openvswitch ]; then
install -d -m 755 -o root -g root /var/run/openvswitch
fi
SSL_OPTS=
case $LISTEN in
*ssl*)
: ${PRIVKEY:=/etc/openvswitch-controller/privkey.pem}
: ${CERT:=/etc/openvswitch-controller/cert.pem}
: ${CACERT:=/etc/openvswitch-controller/cacert.pem}
if test ! -e "$PRIVKEY" || test ! -e "$CERT" ||
test ! -e "$CACERT"; then
if test ! -e "$PRIVKEY"; then
echo "$PRIVKEY: private key missing" >&2
fi
if test ! -e "$CERT"; then
echo "$CERT: certificate for private key missing" >&2
fi
if test ! -e "$CACERT"; then
echo "$CACERT: CA certificate missing" >&2
fi
exit 1
fi
SSL_OPTS="--private-key=$PRIVKEY --certificate=$CERT --ca-cert=$CACERT"
;;
esac
# Start the process using the wrapper
if [ -z "$DAEMONUSER" ] ; then
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--exec $DAEMON -- --detach --pidfile=$PIDFILE \
$LISTEN $DAEMON_OPTS $SSL_OPTS
errcode=$?
else
# if we are using a daemonuser then change the user id
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--chuid $DAEMONUSER --exec $DAEMON -- \
--detach --pidfile=$PIDFILE $LISTEN $DAEMON_OPTS \
$SSL_OPTS
errcode=$?
fi
return $errcode
}
stop_server() {
# Stop the process using the wrapper
if [ -z "$DAEMONUSER" ] ; then
start-stop-daemon --stop --quiet --pidfile $PIDFILE \
--exec $DAEMON
errcode=$?
else
# if we are using a daemonuser then look for process that match
start-stop-daemon --stop --quiet --pidfile $PIDFILE \
--user $DAEMONUSER --exec $DAEMON
errcode=$?
fi
return $errcode
}
reload_server() {
[ ! -f "$PIDFILE" ] && return 1
pid=`cat $PIDFILE` # This is the daemon's pid
# Send a SIGHUP
kill -1 $pid
return $?
}
force_stop() {
# Force the process to die killing it manually
[ ! -e "$PIDFILE" ] && return
if running ; then
kill -15 $pid
# Is it really dead?
sleep "$DODTIME"
if running ; then
kill -9 $pid
sleep "$DODTIME"
if running ; then
echo "Cannot kill $NAME (pid=$pid)!"
exit 1
fi
fi
fi
rm -f $PIDFILE
}
case "$1" in
start)
echo "Starting $DESC " "$NAME"
# Check if it's running first
if running ; then
echo "apparently already running"
exit 0
fi
if start_server && running ; then
# It's ok, the server started and is running
:
else
# Either we could not start it or it is not running
# after we did
# NOTE: Some servers might die some time after they start,
# this code does not try to detect this and might give
# a false positive (use 'status' for that)
:
fi
;;
stop)
echo "Stopping $DESC" "$NAME"
if running ; then
# Only stop the server if we see it running
stop_server
else
# If it's not running don't do anything
echo "apparently not running"
exit 0
fi
;;
force-stop)
# First try to stop gracefully the program
$0 stop
if running; then
# If it's still running try to kill it more forcefully
echo "Stopping (force) $DESC" "$NAME"
force_stop
fi
;;
restart|force-reload)
echo "Restarting $DESC" "$NAME"
stop_server
# Wait some sensible amount, some server need this
[ -n "$DODTIME" ] && sleep $DODTIME
start_server
running
;;
status)
echo "Checking status of $DESC" "$NAME"
if running ; then
echo "running"
else
echo "apparently not running"
exit 1
fi
;;
# Use this if the daemon cannot reload
reload)
echo "Reloading $NAME daemon: not implemented, as the daemon"
echo "cannot re-read the config file (use restart)."
;;
*)
N=/etc/init.d/openvswitch-controller
echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
exit 1
;;
esac
exit 0
