Centos7 yum安装mysql5.7

Centos 7中将MySQL数据库软件从默认的程序列表中移除，用mariadb代替。
也就是说不能再跟之前6一样，直接使用yum进行安装，需要使用官网提供的软件源进行安装，此次安装版本为5.7

1. 安装官网提供的yum源

# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm# rpm -ivh mysql57-community-release-el7-11.noarch.rpm

2. 安装MySQL

# yum -y install mysql-server

3. 修改Mysql配置文件

[root@host-192-168-8-37 ~]# vim /etc/my.cnf[mysqld]character-set-server=utf8

4. 启动MySQL

q 启动MySQL

[root@master ~]# systemctl start mysqld

q 设置MySQL为开机启动

[root@master ~]# systemctl enable mysqld

5. 修改密码&进入MySQL数据库

Mysql5.7版本及之后不再使用空密码，在安装时会生成临时密码并保存在日志文件中

[root@host-192-168-8-37 ~]# grep 'password' /var/log/mysqld.log 2017-10-16T02:12:56.016829Z 1 [Note] A temporary password is generated for root@localhost: #zua)gQ?e5Gi

这里将用户的密码修改为：Mysql_password123

[root@host-192-168-8-37 yum.repos.d]# mysql -u root -pEnter password:Welcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 5Server version: 5.7.19

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> alter user 'root'@'localhost' identified by 'Mysql_password123';Query OK, 0 rows affected (0.00 sec) mysql>

6. 配置MySQL

q 创建数据库(数据库名称：cache_cloud；编码：UTF-8)

mysql> create database cache_cloud default charset utf8;Query OK, 1 row affected (0.00 sec) mysql> show databases;+--------------------+| Database           |+--------------------+| information_schema || cache_cloud        || mysql              || performance_schema || sys                |+--------------------+5 rows in set (0.01 sec) mysql>