如何要求Ambari服务自动启动

 ```

 [Unit]

 Description=Ambari Server

 After=network.target

 [Service]

 ExecStart=/usr/sbin/ambari-server start

 ExecStop=/usr/sbin/ambari-server stop

 Type=forking

 [Install]

 WantedBy=multi-user.target

 ```

 保存并关闭文件后，运行以下命令启用并启动Ambari服务：

 ```

 sudo systemctl enable ambari-server

 sudo systemctl start ambari-server

 ```

 ```

 #!/bin/bash

 #

 # ambari-server     This shell script takes care of starting and stopping

 #                   the Ambari Server daemon

 #

 # chkconfig: - 85 15

 # description: Ambari Server

 # processname: ambari-server

 # Source function library.

 . /etc/rc.d/init.d/functions

 start() {

     echo -n "Starting Ambari Server: "

     /usr/sbin/ambari-server start

     echo

 }

 stop() {

     echo -n "Stopping Ambari Server: "

     /usr/sbin/ambari-server stop

     echo

 }

 case "$1" in

     start)

         start

         ;;

     stop)

         stop

         ;;

     restart)

         stop

         start

         ;;

     *)

         echo "Usage: $0 {start|stop|restart}"

         exit 1

 esac

 exit 0

 ```

 保存并关闭文件后，运行以下命令启用并启动Ambari服务：

 ```

 sudo chmod +x /etc/init.d/ambari-server

 sudo chkconfig --add ambari-server

 sudo service ambari-server start

 ```

 ```

 sudo systemctl status ambari-server

 ```

 ```

 sudo service ambari-server status

 ```