linux开机自启动tomcat

watchdog

#! /bin/sh
#
# watchdog - a watchdog daemon
#
# chkconfig: - 27 46
# description: A watchdog daemon
#
# rc file author: Marc Merlin <[e-mail]>
#                 Henning P. Schmiedehausen <[e-mail]>
#                 Richard W.M. Jones <[e-mail]>

# Source function library.
. /etc/rc.d/init.d/functions

[ -x /usr/sbin/watchdog -a -e /etc/watchdog.conf ] || exit 0

VERBOSE="no"
if [ -f /etc/sysconfig/watchdog ]; then
    . /etc/sysconfig/watchdog
fi

RETVAL=0
prog=watchdog
pidfile=/var/run/watchdog.pid
lockfile=/var/lock/subsys/watchdog

start() {

	echo -n $"Starting $prog: "
	if [ -n "$(pidofproc $prog)" ]; then
		echo -n $"$prog: already running"
		echo_failure
		echo
		return 1
	fi
	if [ "$VERBOSE" = "yes" ]; then
	    daemon /usr/sbin/${prog} -v
	else
	    daemon /usr/sbin/${prog}
        fi
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && touch $lockfile
	[ $RETVAL -eq 0 ] && echo_success
	[ $RETVAL -ne 0 ] && echo_failure
	return $RETVAL
}

stop() {
	echo -n "Stopping $prog: "
	# We are forcing it to _only_ use -TERM as killproc could use
	# -KILL which would result in BMC timer not being set properly 
	# and reboot the box.
	killproc $prog -TERM
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && rm -f $lockfile $pidfile
	return $RETVAL
}

restart() {
  	stop
	sleep 6
	start
}	

case "$1" in
  start)
  	start
	;;
  stop)
  	stop
	;;
  reload|restart)
  	restart
	;;
  condrestart)
    if [ -f $lockfile ]; then
	restart
    fi
    ;;
  status)
	status $prog
	RETVAL=$?
	;;
  *)
	echo $"Usage: $0 {start|stop|restart|status|condrestart}"
	exit 1
esac

exit $RETVAL

tomcat

cat > /etc/watchdog.d/tomcat <<EOF
#!/bin/sh
name=java
path=/opt/apache-tomcat-7.0.29/bin/
pid=\`pidof \$name\`
case "\$1" in
  test)
        if [ "\$pid" != "" ]; then
            exit 0
        fi
        echo tomcat is down
        exit 1
        ;;
  repair)
        cd \$path
        ./startup.sh
        echo tomcat is start...
        exit 0
        ;;
  *)
        echo 1>&2 $"Usage: \$0 {test|repair}"
        exit 2
esac
EOF

chmod 777 /etc/watchdog.d/tomcat

/etc/init.d/watchdog restart

在startup.sh中加上环境变量

#设置JAVA_HOME环境变量
export JAVA_HOME=/opt/java/jdk1.6.0_33