1.编写es启停脚本，如下：

注意替换es目录(/home/caster/elasticsearch-7.9.3)以及es启动用户(es)

#!/bin/bash
source /etc/profile
case "$1" in
start)
    su es<<!
    cd /home/caster/elasticsearch-7.9.3
    ./bin/elasticsearch -d
!
    echo "elasticsearch startup"
    ;;
stop)
    es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
    kill  $es_pid
    echo "elasticsearch stopped"
    ;;
restart)
    es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
    kill -9 $es_pid
    echo "elasticsearch stopped"
    su es<<!
    cd /home/caster/elasticsearch-7.9.3
    ./bin/elasticsearch -d
!
    echo "elasticsearch startup"
    ;;
*)
    echo "start|stop|restart"
    ;;
esac
exit $?

2.将脚本添加到开启自启动模块

• 放置脚本到指定目录并赋予脚本执行权限: chmod +x /etc/init.d/es

  
  /etc/init.d目录

• 添加到自启动: chkconfig --add es

  
  添加查看结果
• 重启机器查看es是否会自启动
  reboot 并查看es是否自启动