Centos7安裝mysql8.0教程

1.背景

centos7安裝mysql8.0

2.安裝步驟

步驟一：安裝準備工作

1．查看是否有安裝過mysql
rpm -qa | grep -i mysql
2．刪除mysql
yum -y remove MySQL-*
3．把所有出現的目錄統統刪除
find / -name mysql
4．刪除配置文件
rm -rf /etc/my.cnf

步驟二：下載安裝包

sudo rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

步驟三：安裝

sudo yum --enablerepo=mysql80-community install mysql-community-server

步驟四：啓動-狀態查看

// 啓動

sudo service mysqld start

// 狀態查看

service mysqld status

步驟五：查看臨時密碼 登錄

grep "A temporary password" /var/log/mysqld.log

mysql -uroot -p

步驟六：修改臨時密碼

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Admin123@';
Query OK, 0 rows affected (0.44 sec)

步驟七：配置遠程訪問

1.查看當前用戶

select host, user, authentication_string, plugin from user;

2.添加一個用戶

CREATE USER 'root'@'%' IDENTIFIED BY 'Admin123@';

3.設置權限

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
Query OK, 0 rows affected (0.14 sec)

步驟九：修改加密方式,避免客戶端鏈接報錯

原因是mysql8的加密方式規則不一樣，是caching_sha2_password
需要加密方式改成mysql_native_password就行了
語法:ALTER USER ‘[用戶名]’@’%’ IDENTIFIED WITH mysql_native_password BY ‘[密碼]’;
輸入：ALTER USER ‘root’@’%’ IDENTIFIED WITH mysql_native_password BY ‘Admin123@’;
加密方式以及改成了mysql_native_password

mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'Admin123@';
Query OK, 0 rows affected (1.10 sec)

步驟十：刷新配置生效

mysql> flush privileges;
Query OK, 0 rows affected (0.13 sec)

3.鏈接測試

 鏈接成功後,該用戶支持數據庫建立等很多權限1

完美!