检查 MySQL 服务的状态：
sudo systemctl status mariadb
或者，尝试使用 mysqld：
sudo systemctl status mysqld
这将显示 MySQL 或 MariaDB 服务的状态。如果服务正在运行，你将能够在输出中看到相应的信息。如果没有运行，它会提供有关为什么无法启动的信息。
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