jdk：
yum -y list java*
yum -y install java-1.8.0-openjdk.x86_64
mysql8.0:
https://www.cnblogs.com/zhanyd/p/10001138.html
mysql5.7
https://blog.csdn.net/wohiusdashi/article/details/89358071
redis:
https://www.cnblogs.com/zuidongfeng/p/8032505.html
https://blog.csdn.net/qq_37345604/article/details/90034424
最后别忘了开云服务器的ip白名单。
按照说明一步步来绝对可以，亲测的
