这才是真正正确的让jar后台启动的脚本,网络上的各种nohoup的脚本都是临时执行一次任务用的。
#!/bin/sh # # init.d script # # ### BEGIN INIT INFO # Provides: mongodb # Required-Start: $network $local_fs $remote_fs # Required-Stop: $network $local_fs $remote_fs # Should-Start: $named # Should-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: An object/document-oriented database # Description: MongoDB is a high-performance, open source, schema-free # document-oriented data store that's easy to deploy, manage # and use. It's network accessible, written in C++ and offers # the following features: # . # * Collection oriented storage - easy storage of object- # style data # * Full index support, including on inner objects # * Query profiling # * Replication and fail-over support # * Efficient storage of binary data including large # objects (e.g. videos) # * Auto-sharding for cloud-level scalability (Q209) # . # This package is build with V8 JavaScript engine. # . # High performance, scalability, and reasonable depth of # functionality are the goals for the project. ### END INIT INFO DAEMON=/usr/local/jdk1.8.0_40/bin/java OPTION=-jar VAR=/usr/local/danabang.storage/danabang.storage.jar DESC=danabang.storage # Default defaults. Can be overridden by the /etc/default/$NAME NAME=danabang.storage PIDFILE=/var/data/danabang.storage/log/$NAME.pid RUNAS=tangrui if test ! -x $DAEMON; then echo "Could not find $DAEMON" exit 0 fi . /lib/lsb/init-functions STARTTIME=1 DIETIME=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 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() { # Start the process using the wrapper start-stop-daemon --background --start --quiet --pidfile $PIDFILE \ --make-pidfile --chuid $RUNAS \ --exec $DAEMON -- $OPTION $VAR errcode=$? return $errcode } stop_server() { # Stop the process using the wrapper start-stop-daemon --stop --quiet --pidfile $PIDFILE \ --user $RUNAS \ --exec $DAEMON errcode=$? return $errcode } force_stop() { # Force the process to die killing it manually [ ! -e "$PIDFILE" ] && return if running ; then kill -15 $pid # Is it really dead? sleep "$DIETIME"s if running ; then kill -9 $pid sleep "$DIETIME"s if running ; then echo "Cannot kill $NAME (pid=$pid)!" exit 1 fi fi fi rm -f $PIDFILE } case "$1" in start) log_daemon_msg "Starting $DESC" "$NAME" # Check if it's running first if running ; then log_progress_msg "apparently already running" log_end_msg 0 exit 0 fi if start_server ; then # NOTE: Some servers might die some time after they start, # this code will detect this issue if STARTTIME is set # to a reasonable value [ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time if running ; then # It's ok, the server started and is running log_end_msg 0 else # It is not running after we did start log_end_msg 1 fi else # Either we could not start it log_end_msg 1 fi ;; stop) log_daemon_msg "Stopping $DESC" "$NAME" if running ; then # Only stop the server if we see it running errcode=0 stop_server || errcode=$? log_end_msg $errcode else # If it's not running don't do anything log_progress_msg "apparently not running" log_end_msg 0 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 log_daemon_msg "Stopping (force) $DESC" "$NAME" errcode=0 force_stop || errcode=$? log_end_msg $errcode fi ;; restart|force-reload) log_daemon_msg "Restarting $DESC" "$NAME" errcode=0 stop_server || errcode=$? # Wait some sensible amount, some server need this [ -n "$DIETIME" ] && sleep $DIETIME start_server || errcode=$? [ -n "$STARTTIME" ] && sleep $STARTTIME running || errcode=$? log_end_msg $errcode ;; status) log_daemon_msg "Checking status of $DESC" "$NAME" if running ; then log_progress_msg "running" log_end_msg 0 else log_progress_msg "apparently not running" log_end_msg 1 exit 1 fi ;; *) N=/etc/init.d/$NAME echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2 exit 1 ;; esac exit 0