centos7 開啓防火牆後，沒法遠程鏈接MySQL

一、數據庫沒有受權sql GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; FLUSH PRIVILEGES; 二、firewall防火牆沒有開放端口數據庫 添加端口tcp firewall-cmd --zone=public --add-port=3306/tcp --perma

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