Linux安装Mysql rpm

1.安装时候会提示与已经安装的RPM包有冲突，所以我们先卸载一些RPM包，要卸载哪些呢？我们要卸载的是包含有mariadb关键字的RPM包，执行命令：rpm -qa|grep mariadb来查看一下我们要卸载哪些软件，看下图：

2.既然知道了是哪些RPM包，就开始卸载吧！执行命令：

rpm -e --nodeps mariadb-libs-5.5.41-2.el7_0.x86_64

rpm -e --nodeps mariadb-server-5.5.41-2.el7_0.x86_64

rpm -e --nodeps mariadb-5.5.41-2.el7_0.x86_64

3.虽然官方文档说安装mysql-community-client-5.7.9-1.el7.x86_64.rpm和mysql-community-server-5.7.9-1.el7.x86_64.rpm就可以获得标准功能的MySQL。但是由于RPM包的依赖关系，所以实际上我们还要多装2个RPM包：mysql-community-common-5.7.9-1.el7.x86_64.rpm和mysql-community-libs-5.7.9-1.el7.x86_64.rpm。依次执行命令：

rpm -ivh mysql-community-common-5.7.9-1.el7.x86_64.rpm

rpm -ivh mysql-community-libs-5.7.9-1.el7.x86_64.rpm

rpm -ivh mysql-community-client-5.7.9-1.el7.x86_64.rpm

rpm -ivh mysql-community-server-5.7.9-1.el7.x86_64.rpm

4.Mysql数据库的root账户会产生一个随机初始密码，执行命令：

vi  /var/log/mysqld.log

5.现在可以启动mysqld服务了，执行命令：

systemctl  start  mysqld.service

systemctl status mysqld.service

6.登录mysql并修改root用户密码，执行命令：

mysql -uroot -p

alter user 'root'@'localhost' identified by 'root';

grant all privileges on *.* to '用户名'@'IP' identified by '密码' with grant option;

7.修改root用户密码

update mysql.user set authentication_string=password('root') where user='root' and Host = 'localhost';

flush privileges;

8备份数据库命令：mysqldump -uroot -p -h192.168.0.19 ide_web > D:\mytest.sql

9.新增超级权限并允许远程访问：

GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

FLUSH   PRIVILEGES;

10.更改mysql编码方式，执行命令vim /etc/my.cnf，增加下面记录：

[client]

default-character-set = utf8

[mysqld]

default-storage-engine = INNDB

character-set-server = utf8

collation-server = utf8_general_ci