1、安裝新版mysql前，需將系統自帶的mariadb-lib卸載

rpm -qa|grep mariadb
[root@host]# mariadb-libs-5.5.44-2.el7.centos.x86_64
rpm -e --nodeps mariadb-libs-5.5.44-2.el7.centos.x86_64

2、下載mysql離線包

下載地址：https://dev.mysql.com/downloads/mysql/#downloads

解壓：tar xvf mysql-5.7.16-1.el7.x86_64.rpm-bundle.tar

3、創建mysql的yum源

createrepo mysql目錄

添加yum源文件

4、安裝mysql

yum install mysql-server

5、獲取mysql密碼

密碼在/var/log/mysqld.log裏，獲取：grep "password" /var/log/mysqld.log

用該密碼登錄到服務端後，必須馬上修改密碼，不然會報如下錯誤：
mysql> select user();
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

如果只是修改為一個簡單的密碼，會報以下錯誤：
mysql> ALTER USER USER() IDENTIFIED BY ‘12345678‘;
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
這個其實與validate_password_policy的值有關。

參考：https://www.cnblogs.com/ivictor/p/5142809.html

6、修改密碼

set global validate_password_policy=0;
set global validate_password_length=1;

ALTER USER USER() IDENTIFIED BY ‘12345678‘;

或：set password=password(‘mysql‘);

7、設置mysql開機啟動
// 檢查是否已經是開機啟動
systemctl list-unit-files | grep mysqld
// 開機啟動
systemctl enable mysqld.service

8、創建用戶，分配權限，遠程登陸授權
mysql -uroot -pmysql
GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘mysql‘ WITH GRANT OPTION;
FLUSH PRIVILEGES;
初始化hive庫
mysql -u root -pmysql
CREATE USER ‘hive‘@‘%‘ IDENTIFIED BY ‘hive‘;
GRANT ALL PRIVILEGES ON *.* TO ‘hive‘@‘%‘;
CREATE USER ‘hive‘@‘localhost‘ IDENTIFIED BY ‘hive‘;
GRANT ALL PRIVILEGES ON *.* TO ‘hive‘@‘localhost‘;
CREATE USER ‘hive‘@‘hostname‘ IDENTIFIED BY ‘hive‘;
GRANT ALL PRIVILEGES ON *.* TO ‘hive‘@‘hostname‘;
FLUSH PRIVILEGES;
CREATE DATABASE `hive` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

centos7離線安裝mysql