debian/openvswitch-controller.init

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007, 2009 Javier Fernandez-Sanguino <jfs@debian.org>
   4 #
   5 # This is free software; you may redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as
   7 # published by the Free Software Foundation; either version 2,
   8 # or (at your option) any later version.
   9 #
  10 # This is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License with
  16 # the Debian operating system, in /usr/share/common-licenses/GPL;  if
  17 # not, write to the Free Software Foundation, Inc., 59 Temple Place,
  18 # Suite 330, Boston, MA 02111-1307 USA
  19 #
  20 ### BEGIN INIT INFO
  21 # Provides:          openvswitch-controller
  22 # Required-Start:    $network $local_fs
  23 # Required-Stop:
  24 # Should-Start:      $named
  25 # Should-Stop:
  26 # Default-Start:     2 3 4 5
  27 # Default-Stop:      0 1 6
  28 # Short-Description: Open vSwitch controller
  29 ### END INIT INFO
  30
  31 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
  32
  33 DAEMON=/usr/sbin/controller # Introduce the server's location here
  34 NAME=ovs-controller         # Introduce the short server's name here
  35 DESC=ovs-controller         # Introduce a short description here
  36 LOGDIR=/var/log/openvswitch # Log directory to use
  37
  38 PIDFILE=/var/run/$NAME.pid
  39
  40 test -x $DAEMON || exit 0
  41
  42 . /lib/lsb/init-functions
  43
  44 # Default options, these can be overriden by the information
  45 # at /etc/default/$NAME
  46 DAEMON_OPTS=""          # Additional options given to the server
  47
  48 DODTIME=10              # Time to wait for the server to die, in seconds
  49                         # If this value is set too low you might not
  50                         # let some servers to die gracefully and
  51                         # 'restart' will not work
  52
  53 LOGFILE=$LOGDIR/$NAME.log  # Server logfile
  54 #DAEMONUSER=            # User to run the daemons as. If this value
  55                         # is set start-stop-daemon will chuid the server
  56
  57 # Include defaults if available
  58 default=/etc/default/openvswitch-controller
  59 if [ -f $default ] ; then
  60     . $default
  61 fi
  62
  63 # Check that the user exists (if we set a user)
  64 # Does the user exist?
  65 if [ -n "$DAEMONUSER" ] ; then
  66     if getent passwd | grep -q "^$DAEMONUSER:"; then
  67         # Obtain the uid and gid
  68         DAEMONUID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $3}'`
  69         DAEMONGID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $4}'`
  70     else
  71         log_failure_msg "The user $DAEMONUSER, required to run $NAME does not exist."
  72         exit 1
  73     fi
  74 fi
  75
  76
  77 set -e
  78
  79 running_pid() {
  80 # Check if a given process pid's cmdline matches a given name
  81     pid=$1
  82     name=$2
  83     [ -z "$pid" ] && return 1
  84     [ ! -d /proc/$pid ] &&  return 1
  85     cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
  86     # Is this the expected server
  87     [ "$cmd" != "$name" ] &&  return 1
  88     return 0
  89 }
  90
  91 running() {
  92 # Check if the process is running looking at /proc
  93 # (works for all users)
  94
  95     # No pidfile, probably no daemon present
  96     [ ! -f "$PIDFILE" ] && return 1
  97     pid=`cat $PIDFILE`
  98     running_pid $pid $DAEMON || return 1
  99     return 0
 100 }
 101
 102 start_server() {
 103     if [ -z "$LISTEN" ]; then
 104         echo "$default: No connection methods configured, controller disabled" >&2
 105         exit 0
 106     fi
 107
 108     SSL_OPTS=
 109     case $LISTEN in
 110         *ssl*)
 111             : ${PRIVKEY:=/etc/openvswitch-controller/privkey.pem}
 112             : ${CERT:=/etc/openvswitch-controller/cert.pem}
 113             : ${CACERT:=/etc/openvswitch-controller/cacert.pem}
 114             if test ! -e "$PRIVKEY" || test ! -e "$CERT" ||
 115                 test ! -e "$CACERT"; then
 116                 if test ! -e "$PRIVKEY"; then
 117                     echo "$PRIVKEY: private key missing" >&2
 118                 fi
 119                 if test ! -e "$CERT"; then
 120                     echo "$CERT: certificate for private key missing" >&2
 121                 fi
 122                 if test ! -e "$CACERT"; then
 123                     echo "$CACERT: CA certificate missing" >&2
 124                 fi
 125                 exit 1
 126             fi
 127             SSL_OPTS="--private-key=$PRIVKEY --certificate=$CERT --ca-cert=$CACERT"
 128             ;;
 129     esac
 130
 131 # Start the process using the wrapper
 132         if [ -z "$DAEMONUSER" ] ; then
 133             start-stop-daemon --start --pidfile $PIDFILE \
 134                         --exec $DAEMON -- --detach --pidfile=$PIDFILE \
 135                         $LISTEN $DAEMON_OPTS $SSL_OPTS
 136             errcode=$?
 137         else
 138 # if we are using a daemonuser then change the user id
 139             start-stop-daemon --start --quiet --pidfile $PIDFILE \
 140                         --chuid $DAEMONUSER --exec $DAEMON -- \
 141                         --detach --pidfile=$PIDFILE $LISTEN $DAEMON_OPTS \
 142                         $SSL_OPTS
 143             errcode=$?
 144         fi
 145         return $errcode
 146 }
 147
 148 stop_server() {
 149 # Stop the process using the wrapper
 150         if [ -z "$DAEMONUSER" ] ; then
 151             start-stop-daemon --stop --quiet --pidfile $PIDFILE \
 152                         --exec $DAEMON
 153             errcode=$?
 154         else
 155 # if we are using a daemonuser then look for process that match
 156             start-stop-daemon --stop --quiet --pidfile $PIDFILE \
 157                         --user $DAEMONUSER --exec $DAEMON
 158             errcode=$?
 159         fi
 160
 161         return $errcode
 162 }
 163
 164 reload_server() {
 165     [ ! -f "$PIDFILE" ] && return 1
 166     pid=`cat $PIDFILE` # This is the daemon's pid
 167     # Send a SIGHUP
 168     kill -1 $pid
 169     return $?
 170 }
 171
 172 force_stop() {
 173 # Force the process to die killing it manually
 174     [ ! -e "$PIDFILE" ] && return
 175     if running ; then
 176         kill -15 $pid
 177         # Is it really dead?
 178         sleep "$DIETIME"s
 179         if running ; then
 180             kill -9 $pid
 181             sleep "$DIETIME"s
 182             if running ; then
 183                 echo "Cannot kill $NAME (pid=$pid)!"
 184                 exit 1
 185             fi
 186         fi
 187     fi
 188     rm -f $PIDFILE
 189 }
 190
 191
 192 case "$1" in
 193   start)
 194         log_daemon_msg "Starting $DESC " "$NAME"
 195         # Check if it's running first
 196         if running ;  then
 197             log_progress_msg "apparently already running"
 198             log_end_msg 0
 199             exit 0
 200         fi
 201         if start_server && running ;  then
 202             # It's ok, the server started and is running
 203             log_end_msg 0
 204         else
 205             # Either we could not start it or it is not running
 206             # after we did
 207             # NOTE: Some servers might die some time after they start,
 208             # this code does not try to detect this and might give
 209             # a false positive (use 'status' for that)
 210             log_end_msg 1
 211         fi
 212         ;;
 213   stop)
 214         log_daemon_msg "Stopping $DESC" "$NAME"
 215         if running ; then
 216             # Only stop the server if we see it running
 217             stop_server
 218             log_end_msg $?
 219         else
 220             # If it's not running don't do anything
 221             log_progress_msg "apparently not running"
 222             log_end_msg 0
 223             exit 0
 224         fi
 225         ;;
 226   force-stop)
 227         # First try to stop gracefully the program
 228         $0 stop
 229         if running; then
 230             # If it's still running try to kill it more forcefully
 231             log_daemon_msg "Stopping (force) $DESC" "$NAME"
 232             force_stop
 233             log_end_msg $?
 234         fi
 235         ;;
 236   restart|force-reload)
 237         log_daemon_msg "Restarting $DESC" "$NAME"
 238         stop_server
 239         # Wait some sensible amount, some server need this
 240         [ -n "$DIETIME" ] && sleep $DIETIME
 241         start_server
 242         running
 243         log_end_msg $?
 244         ;;
 245   status)
 246
 247         log_daemon_msg "Checking status of $DESC" "$NAME"
 248         if running ;  then
 249             log_progress_msg "running"
 250             log_end_msg 0
 251         else
 252             log_progress_msg "apparently not running"
 253             log_end_msg 1
 254             exit 1
 255         fi
 256         ;;
 257   # Use this if the daemon cannot reload
 258   reload)
 259         log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"
 260         log_warning_msg "cannot re-read the config file (use restart)."
 261         ;;
 262   *)
 263         N=/etc/init.d/$NAME
 264         echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
 265         exit 1
 266         ;;
 267 esac
 268
 269 exit 0