添加Mysql5.7仓库

sudo rpm -ivh https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm 复制代码

确认Mysql仓库成功添加

sudo yum repolist all | grep mysql | grep enabled

如果展示像下面,则表示成功添加仓库:

mysql-connectors-community/x86_64 MySQL Connectors Community enabled: 51 mysql-tools-community/x86_64 MySQL Tools Community enabled: 63 mysql57-community/x86_64 MySQL 5.7 Community Server enabled: 267

开始安装Mysql5.7

sudo yum -y install mysql-community-server

启动Mysql

• 1.启动

sudo systemctl start mysqld

• 2.设置系统启动时自动启动

sudo systemctl enable mysqld

• 3.查看启动状态

sudo systemctl status mysqld

Mysql的安全设置

CentOS上的root默认密码可以在文件/var/log/mysqld.log找到，通过下面命令可以打印出来

cat /var/log/mysqld.log | grep -i 'temporary password'

执行下面命令进行安全设置，这个命令会进行设置root密码设置，移除匿名用户，禁止root用户远程连接等

mysql_secure_installation

设置数据库编码为utf8

• 1.打开配置文件

sudo vim /etc/my.cnf

• 2.在[mysqld]，[client]，[mysql]节点下添加编码设置

[client] default-character-set=utf8 [mysql] default-character-set=utf8 [mysqld] collation-server = utf8_unicode_ci init-connect='SET NAMES utf8' character-set-server = utf8 复制代码

• 3.重启Mysql即可

sudo systemctl restart mysqld

修改root密码

ALTER USER USER() IDENTIFIED BY '123456';

修改root远程

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456'  

flush privileges;