Linux yum安裝mysql8.x

yum倉庫下載mysql

sudo yum localinstall https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm

yum安裝mysql

sudo yum install mysql-community-server

啓動mysql服務

sudo service mysqld start

檢查mysql服務狀態

sudo service mysqld status

查看初始化密碼

sudo grep 'temporary password' /var/log/mysqld.log

修改密碼安全級別

# mysql8修改密碼校驗方案前，需要先修改初始化密碼
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '!!11qqAAzz';
# 查看當前密碼安全級別
mysql> SHOW VARIABLES LIKE 'validate_password%';
# 修改密碼校驗方案等級
mysql> set global validate_password.policy=0;
# 修改密碼校驗長度未4位
mysql> set global validate_password.length=4;
# 這個時候可以和mysql8之前的密碼設置方案一樣了
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';

配置mysql外部訪問

雲服務器要先檢查安全組規則

# 切換到mysql庫
mysql> use mysql;
# 查看用戶對應允許訪問的主機
mysql> select user,host from user;
# 修改root用戶允許外部訪問
mysql> update user set host = '%' where user ='root';
# 刷新權限
mysql>flush privileges;