mysql 5.7 离线安装

删除原有的mariadb
rpm -qa|grep mariadb
rpm -e --nodeps mariadb-libs

安装
rpm -ivh mysql-community-common-5.7.20-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.20-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.20-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.20-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.20-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.20-1.el7.x86_64.rpm

service mysqld status
systemctl start mysqld

重置root密码
grep 'temporary password' /var/log/mysqld.log

1 mysql -u root -p
2 mysql> Enter password: （输入刚才查询到的随机密码）
3 mysql> SET PASSWORD FOR 'root'@'localhost'= "123";
4 mysql> exit

授权
1 mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'qaz-123' WITH GRANT OPTION;
2 mysql>FLUSH PRIVILEGES;
3 mysql>exit;

防火墙
1 firewall-cmd --zone=public --add-port=3306/tcp --permanent
2 firewall-cmd --reload

通过修改my.cnf配置文件来修改时区

# vim /etc/my.cnf  
##在[mysqld]区域中加上
default-time_zone = '+8:00'

sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'

问题：

warning: mysql-community-server-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
libaio.so.1()(64bit) is needed by mysql-community-server-5.7.20-1.el7.x86_64
libaio.so.1(LIBAIO_0.1)(64bit) is needed by mysql-community-server-5.7.20-1.el7.x86_64
libaio.so.1(LIBAIO_0.4)(64bit) is needed by mysql-community-server-5.7.20-1.el7.x86_64

解决：

yum install libaio