Centos安装mysql5.7

1

从官网上下载MySQL安装包mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar

2

解压文件：
tar -xvf mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar

3

本地安装 comm client libs libs-compat dev server 根据实际安装环境安装其他缺失的包
yum localinstall mysql-community-libs-5.7.26-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.26-1.el7.x86_64.rpm mysql-community-common-5.7.26-1.el7.x86_64.rpm mysql-community-client-5.7.26-1.el7.x86_64.rpm mysql-community-devel-5.7.26-1.el7.x86_64.rpm mysql-community-server-5.7.26-1.el7.x86_64.rpm

4

初始化mysql 
mkdir /udata/mysql 
chown mysql:mysql /udata/mysql
修改/etc/my.cnf
datadir=/udata/mysql 如果修改了socket的位置务必[client] 加上socket 对应的位置
myqld --initialize 并查看mysql生成的随机密码 ，默认位于 /var/log/mysqld.log中

5

启动mysql服务
    systemctl enable mysqld
    systemctl start mysqld

6

mysql  -uroot -p上诉随机密码  连接到mysql
    set password = password('xxx') 修改密码 xxx为修改后的密码

7

update user set host = '%' where host='localhost';
    flush privileges
    允许其他主机远程连接mysql

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