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一、下载https://dev.mysql.com/downloads/mysql/二、解压，并创建data文件夹[root@PTLHSJT1 soft]# tar -xvf mysql-8.0.28-linux-glibc2.12-x86_64.tar.xz[root@PTLHSJT1 soft]# mv mysql-8.0.28-linux-glibc2.12-x86_64 /app/mysql8[root@PTLHSJT1 app]# cd mysql8/[root@PTLHSJT1 my

查看目标库是否启用federated插件mysql> show engines;+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+| Engine | Support | Comment

下载好安装包上传到服务器，并解压[root@host-10-253-234-32 soft]# lsmysql-5.7.31-linux-glibc2.12-x86_64 mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz[root@host-10-253-234-32 soft]#[root@host-10-253-234-32 ~]# mv /soft/mysql-5.7.31-linux-glibc2.12-x86_64 /u01/mysql5.7[roo