獲取官方下載地址 https://dev.mysql.com/downloads/repo/yum/

下載mysql安裝包 ：wget https://repo.mysql.com//mysql80-community-release-el8-1.noarch.rpm

將下載好的安裝包掛載到本地 找個路徑放 cd /home/package
yum localinstall mysql80-community-release-el8-1.noarch.rpm

查看是否掛載成功
yum repolist enabled | grep “mysql.-community.”

禁用centos8.0自帶的mysql模塊
yum module disable mysql

安裝mysql：yum install mysql-community-server

啟動mysql服務
systemctl mysqld start

查看mysql服務啟動狀態
systemctl mysqld status

查看mysql安裝時生成的隨機密碼
grep ‘temporary password’ /var/log/mysqld.log

登錄mysql
mysql -uroot -p’剛獲取到的隨機密碼’

修改登錄密碼
ALTER USER ‘root’ @‘localhost’ IDENTIFIED BY ‘您的密碼’;
出現這個問題，表示密碼過于簡單
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

開放mysql遠程訪問
創建權限記錄：
CREATE user ‘root’@’%’ IDENTIFIED BY ‘您的密碼’;
授權：
GRANT ALL PRIVILEGES ON . TO ‘root’ @’%’ WITH GRANT OPTION;
修改密碼過期策略：
ALTER USER ‘root’ @‘localhost’ IDENTIFIED BY ‘您的密碼’ PASSWORD EXPIRE NEVER;
重新修改密碼：
ALTER USER ‘root’ @’%’ IDENTIFIED WITH mysql_native_password BY ‘您的密碼’;
刷新權限：
FLUSH PRIVILEGES;