centos7.6离线安装mysql5.7（附下载链接）

本来打算直接用原生yum源安装，但是跨国访问网络太慢，只好采用离线安装的方式，原理就是把所需的rpm下载下来再上传服务器安装。

1、rpm文件下载地址：

目录： http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/

具体文件：

http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-common-5.7.28-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-devel-5.7.28-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-libs-compat-5.7.28-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-libs-5.7.28-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-connectors-community/el/7/x86_64//mysql-connector-odbc-8.0.18-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-client-5.7.28-1.el7.x86_64.rpm
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-server-5.7.28-1.el7.x86_64.rpm

2、安装依赖环境

yum -y install numactl

3、卸载mariadb

[root@hadoop ~]# rpm -qa|grep mariadb
mariadb-libs-5.5.-.el7.x86_64
[root@hadoop ~]# rpm -e --nodeps mariadb-libs-5.5.-.el7.x86_64
[root@hadoop ~]# rpm -qa|grep mariadb

3、安装原生yum源（非必选）

wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
yum localinstall mysql57-community-release-el7-.noarch.rpm

4、安装mysql rpm

rpm -ivh mysql-community-common-5.7.-.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.-.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.-.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.-.el7.x86_64.rpm
rpm -ivh mysql-connector-odbc-8.0.-.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.-.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.-.el7.x86_64.rpm

5、启动mysql服务器

service mysqld start

6、修改密码

mysql默认给root账号配置了临时密码，需要手动改成自己的

查看方式：

cat /var/log/mysqld.log | grep password
--22T08::.578240Z  [Note] A temporary password is generated for root@localhost: !Ml,ThwaB0d_

其中末尾的“!Ml,ThwaB0d_”就是password

登录mysql：mysql -uroot -p

修改密码策略（防止不能设置自己想设置的密码，如果想要设置的密码复杂度够，可以跳过）：

set global validate_password_policy=;
set global validate_password_length=;

修改密码：

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

7、允许远程登录

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '' WITH GRANT OPTION;
FLUSH PRIVILEGES;