node.js - 在 Oracle linux 中为 nodejs 应用程序创建服务

Question

我有一个 nodejs 应用程序，我想将它作为 oracle linux 服务器中的一项服务运行。 我已经创建了服务文件/etc/init.d/wsdlsrv 然后我运行这个命令:

cd /etc/init.d
chmod +x wsdlsrv
/sbin/chkconfig wsdlsrv on
systemctl start wsdlsrv

wsdlsrv 代码如下:

user="root"
. /etc/init.d/functions
export PATH="/usr/local/bin/:/usr/bin/:$PATH"  
name='wsdlsrv'
pid_file="/var/run/$name.pid" 
stdout_log="/var/log/$name.log"
stderr_log="/var/log/$name.err"
get_pid() {
    cat "$pid_file"
}
is_running() {
    [ -f "$pid_file" ] && ps `get_pid` > /dev/null 2>&1
}
case "$1" in
    start)
    if is_running; then
        echo "Already started"
    else
        echo "Starting $name"
        cd "/home/wsdlsrv"
            su $user -c "node app" >> "$stdout_log" 2>> "$stderr_log" &

        echo $! > "$pid_file"
        if ! is_running; then
            echo "Unable to start, see $stdout_log and $stderr_log"
            exit 1
        fi
    fi
    ;;
    stop)
    if is_running; then
        echo -n "Stopping $name.."
        kill `get_pid`
        for i in {1..10}
        do
            if ! is_running; then
                break
            fi

            echo -n "."
            sleep 1
        done
        echo

        if is_running; then
            echo "Not stopped; may still be shutting down or shutdown may have failed"
            exit 1
        else
            echo "Stopped"
                if [ -f "$pid_file" ]; then
                rm "$pid_file"
            fi
        fi
    else
        echo "Not running"
    fi
    ;;
    restart)
    $0 stop
    if is_running; then
        echo "Unable to stop, will not attempt to start"
        exit 1
    fi
    $0 start
    ;;
    status)
    if is_running; then
        echo "Running"
    else
        echo "Stopped"
        exit 1
    fi
    ;;
    *)
    echo "Usage: $0 {start|stop|restart|status}"
    exit 1
    ;;
esac

exit 0

但是，当我尝试使用 systemclt 启动服务时，它抛出错误:wsdlsrv.service 的作业失败，因为控制进程退出并显示错误代码。有关详细信息，请参阅“systemctl status wsdlsrv.service”和“journalctl -xe”。wsdlsrv.service 的作业失败，因为控制进程退出并显示错误代码。有关详细信息，请参阅“systemctl status wsdlsrv.service”和“journalctl -xe”。

Answer 1

您是否尝试过使用 service wsdlsrv start ？

确保/etc/sysconfig/wsdlsrv 中至少有空文件条目

[root@centos ~]# cat /etc/sysconfig/wsdlsrv 
# TODO: add relevant configuration stuff here.

然后您需要通过执行systemctl daemon-reload 来重新加载systemctl 守护进程。 之后你可以使用 systemctl status wsdlsrv , systemctl start wsdlsrv 等

例如:

[root@centos init.d]# systemctl status wsdlsrv
● wsdlsrv.service - (null)
   Loaded: loaded (/etc/rc.d/init.d/wsdlsrv; bad; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2017-03-14 17:12:47 EDT; 7min ago
     Docs: man:systemd-sysv-generator(8)

Mar 14 17:12:47 centos systemd[1]: Starting (null)...
Mar 14 17:12:47 centos systemd[1]: wsdlsrv.service: control process exited, code=exited status=203
Mar 14 17:12:47 centos systemd[1]: Failed to start (null).
Mar 14 17:12:47 centos systemd[1]: Unit wsdlsrv.service entered failed state.
Mar 14 17:12:47 centos systemd[1]: wsdlsrv.service failed.

您可以使用 journalctl -xe 查看来自 systemd 的错误消息