腾讯云CentOS 安装mysql

1.下载mysql的repo源


wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm


2.安装mysql-community-release-el7-5.noarch.rpm包


rpm -ivh mysql-community-release-el7-5.noarch.rpm


安装这个包后，会获得两个mysql的yum repo源：/etc/yum.repos.d/mysql-community.repo，/etc/yum.repos.d/mysql-community-source.repo。


3.安装mysql

yum install mysql-server

登录时有可能报这样的错：ERROR 2002 (HY000): Can‘t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2)，原因是/var/lib/mysql的访问权限问题。下面的命令把/var/lib/mysql的拥有者改为当前用户：

chown -R root:root /var/lib/mysql

service mysqld start

接下来登录重置密码：


$ mysql -u root  //直接回车进入mysql控制台
mysql > use mysql;
mysql > update user set password=password('123456') where user='root';
mysql > exit;