Centos 7 yum 安裝 mysql5.7

1.下載YUM庫

shell > wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

2.安裝YUM庫

shell > yum localinstall -y mysql57-community-release-el7-7.noarch.rpm

3.安裝數據庫

shell > yum install -y mysql-community-server

4.啓動MySQL服務

shell > systemctl start  mysqld.service

5.默認空密碼

shell >  mysql -uroot -p

6.重置root密碼後重啓mysql服務

shell >  update mysql.user set authentication_string=password("yourpassword") where user="root" and Host="localhost"; 

shell >  flush privileges; 

shell >  quit; 

shell >  systemctl restart mysqld;

如果手賤或者不知道啥原因出現如下問題：

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

請修改my.cnf,添加skip-grant-tables和skip-networking：

shell >  vi /etc/my.cnf
shell >  [mysqld]
         skip-grant-tables
         skip-networking

重啓mysql，然後重複以上修改密碼步驟即可，記得修改完後，去掉my.cnf添加的兩行