init.d启动脚本

Question

我终于让它工作了！

如果有人对答案感兴趣。问题是 Glassfish 本身没有创建 PID 文件。因此，需要一个解决方法，即在后台启动程序（使用 &）并输出其 PID。

为了理解，我看了这些帖子：

帕特里克的回答

https://unix.stackexchange.com/questions/137519/start-stop-daemon-not-working-as-expected-no-pid-file-was-written

l0b0 的回答

https://stackoverflow.com/questions/9890062/how-to-run-a-program-and-know-its-pid-in-linux

kojiro 的回答

https://stackoverflow.com/questions/5163144/what-are-the-special-dollar-sign-shell-variables

Stack*(askUbuntu) 社区确实是一个很棒的社区！:)

完整的工作脚本如下：

#!/bin/sh

### BEGIN INIT INFO
#
# Provides:     glassfish
# Required-Start:   $local_fs $remote_fs $network
# Required-Stop:    $local_fs $remote_fs $network
# Default-Start:    2 3 4 5
# Default-Stop:     0 1 6
# Short-Description:    Glassfish scipt (Non official)
# Description:  Start Glassfish domain as service.
#       Non official startup script by Bernhard Sumser.
#
### END INIT INFO

# Using the LSB functions to perform the operations
# NOT needed because no LSB functions used
#. /lib/lsb/init-functions

BASE=/opt/glassfish/bin
NAME=glassfish
DAEMON=${BASE}/asadmin
SCRIPTNAME=/etc/init.d/$NAME

#PID file for the daemon
PIDFILE=/var/run/glassfish.pid

#If the DAEMON is not there, then exit
[ -x "$DAEMON" ] || exit 0


do_start()
{
    $DAEMON start-domain &
    # Wait for child to exit before continuing
    wait
    # Make file with last background PID
    echo $! > $PIDFILE

    # Didn't work because the programm prints from the background. Without moving to the bg no $! can be outputed to file
    #(($DAEMON start-domain) & echo $! > $PIDFILE &)
}

do_stop()
{
    $DAEMON stop-domain
    if [ -e $PIDFILE ]; then
        rm -f $PIDFILE
    fi
}

check_root()
{
    if [ "$(id -u)" != "0" ]; then
        echo "You must be root to start, stop and restart $NAME."
        exit 4
    fi
}

check_process()
{
    # Check if the process is already running. Ignore grep line.
    result=`ps aux | grep /opt/glassfish/modules/glassfish.jar | grep -v grep | wc -l`
}

case $1 in
    start)
        check_root
        check_process
        if [ "$result" = "1"  ]; then
            echo "$NAME is already running"
        else
            # Check if PID file exists and delete it
            if [ -e $PIDFILE ]; then
                rm -f $PIDFILE
            else
                do_start
            fi              
        fi
    ;;

    stop)
        check_root
        if [ -e $PIDFILE ]; then
            do_stop
        else
            echo "$NAME is not running"
        fi
    ;;

    restart)
        check_root
        echo "Restarting $NAME..."
        check_process
        if [ "$result" = "1"  ]; then
            do_stop
            echo "Starting $NAME..."
            do_start
        fi                  
    ;;

    status)
        if [ -e $PIDFILE ]; then
            echo "$NAME is running. PID $(cat $PIDFILE)"
        else
            echo "$NAME is not running"
        fi
    ;;


    *)
            # Show help
            echo "Usage: $SCRIPTNAME {start|status|stop|restart}" >&2
            exit 3
    ;;
esac

由于它位于 /etc/init.d/ 下，我不确定该脚本是否仍然需要 INIT INFO 部分。

现在可以像这样将其用作正常服务：

sudo service glassfish start

然后将其添加到 rc 启动中，它将在重启后启动。

sudo update-rc.d glassfish defaults

Answer 1