centos7.5装mysql5.7
https://www.cnblogs.com/lgqboke/p/6873734.html
centos6.5装mysql5.7
https://blog.csdn.net/ligang_csdn/article/details/78193258
1.删除老的mysql和下载好文件。
查看已安装的版本
rpm -qa|grep -i mysql
卸载掉
yum remove mysql*
2.wget https://dev.mysql.com/get/mysql57-community-release-el6-11.noarch.rpm
3.直接输入yum install mysql-community-server报错
4.网上搜索https://blog.csdn.net/cry1049208942/article/details/84142596
5.保存之后要使用yum install mysql-server而不是yum install mysql-community-server(与在cenos7下安装mysql5.7时有差异)
6.此时使用grep 'temporary password'/var/log/mysqld.log想找出root密码,可是没有(可能版本不同?)
所以按照如下链接修改密码。
https://blog.csdn.net/inslow/article/details/54291182
7.想用shell> systemctlenablemysqldshell> systemctl daemon-reload两个命令设置开机启动，发现命令找不到。
所以按照如下链接设置。
https://blog.csdn.net/jayant_xu/article/details/50441226
