Ubuntu 上的 Apache2，沒有 SELinux。我正在嘗試安裝 WordPress 的新服務(wù)器，但出現(xiàn)錯(cuò)誤cannot connect to database我可以使用命令行登錄mysql -u user -p database很好，端口 3306 是活的。root@localhost:/home/www/services.com# netstat -anActive Internet connections (servers and established)Proto Recv-Q Send-Q Local Address           Foreign Address         State      tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN     tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN     tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN          tcp6       0      0 :::80                   :::*                    LISTENroot@localhost:/home/www/services.com# cat wp-config.phproot@localhost:/home/www/services.com# ufw 狀態(tài)Status: inactive完整錯(cuò)誤：Warning: mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password] in /home/www/services.com/wp-includes/wp-db.php on line 1633Warning: mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client in /home/www/services.com/wp-includes/wp-db.php on line 1633The server requested authentication method unknown to the clientError establishing a database connectionThis either means that the username and password information in your wp-config.php file is incorrect or we can’t contact the database server at localhost. This could mean your host’s database server is down.    Are you sure you have the correct username and password?    Are you sure you have typed the correct hostname?    Are you sure the database server is running?If you’re unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.我還檢查了用戶名中的空格或錯(cuò)誤，并閱讀了許多其他類似的帖子。如何讓 WordPress 連接到 MySQL？