CentOS7安装Mysql

1 、检查 MySQL 是否已安装

yum list installed | grep mysql
yum -y remove + databaseName

2、MySQL 依赖 libaio，所以先要安装 libaio

  yum search libaio # 检索相关信息
  yum install libaio # 安装依赖包

3、下载Mysql

  wget https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm

4、安装

安装mysql yum repository

  yum localinstall mysql57-community-release-el7-11.noarch.rpm

确认yum repository已经安装

  yum repolist enabled | grep "mysql.*-community.*"

查看MySQL版本

yum repolist all | grep mysql

安装

yum install mysql-community-server

5、启动和配置MySQL服务

修改MySQL配置文件/etc/my.cnf

 vim /etc/my.cnf

启动MySQL服务

systemctl start  mysqld

查看 MySQL Server 状态

systemctl status mysqld

关闭 MySQL Server

systemctl stop mysqld

6、测试是否安装成功

  mysql

7、查看生成mysql root用户临时密码

  grep 'temporary password' /var/log/mysqld.log

8、修改root用户的密码

  mysql -uroot -p #输入临时密码
  ALTER USER 'root'@'localhost' IDENTIFIED BY 'your password';

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