event.d script

This is an event.d-script for the new Ubuntu Upstart.

The event gets started/respawned on runlevels 2-5. If you change to level 0, 1 or 6, the process gets stopped/killed. Manual start/stop works through the same commands start and stop. With status you can check the status.

# manages Solr search engine

start on runlevel [2345]
stop on runlevel [016]

kill timeout 30
respawn

script
    cd /home/sysadmin/extension/ezfind/java
    exec /usr/bin/java -jar start.jar
end script

init.d script

This does the same using the traditional init.d-way.

After creation of the script in /etc/init.d you also have to make the symlinks in the rc.2..rc.5-directories.

{% highlight bash %}

!/bin/sh

BEGIN INIT INFO

Provides: solr

Required-Start:

Required-Stop:

Default-Start: 2 3 4 5

Default-Stop: 0 1 6

Short-Description: start Solr daemon

END INIT INFO

Defaults

RUN_MODE="daemons"

JAVA=/usr/bin/java DAEMONDIR=/home/sysadmin/extension/ezfind/java DAEMON=start.jar PIDDIR=/var/run SOLRPID=$PIDDIR/solr.pid

See if the daemon is there

test -x $JAVA -a -x $DAEMONDIR/$DAEMON || exit 0

. /lib/lsb/init-functions

case "$1" in start) log_daemon_msg "Starting Solr daemon" log_progress_msg "solr"

Make sure we have our PIDDIR, even if it's on a tmpfs

    install -o root -g root -m 755 -d $PIDDIR
            if ! start-stop-daemon --start --chdir $DAEMONDIR --quiet --pidfile $SOLRPID --make-pidfile --background --exec $JAVA -- -jar $DAEMON; then
        log_end_msg 1
        exit 1
    fi
    log_end_msg 0
    ;;
stop)
    log_daemon_msg "Stopping Solr daemon"
    log_progress_msg "solr"

    start-stop-daemon --stop --quiet --pidfile $SOLRPID
    # Wait a little and remove stale PID file
    sleep 1
    if [ -f $SOLRPID ] && ! ps h `cat $SOLRPID` > /dev/null
    then
        # Stale PID file (solr was succesfully stopped),
        # remove it
        rm -f $SOLRPID
    fi

    log_end_msg 0

    ;;
restart|force-reload)
    $0 stop
    sleep 1
    $0 start
    ;;
status)
    pidofproc -p $SOLRPID $JAVA >/dev/null
    status=$?
    if [ $status -eq 0 ]; then
        log_success_msg "SOLR is running"
    else
        log_failure_msg "SOLR is not running"
    fi
    exit $status
    ;;
*)
    echo "Usage: /etc/init.d/solr {start|stop|restart|force-reload|status}"
    exit 1
    ;;

esac

exit 0

{% endhighlight %}