service mysqld start　然后報：

==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to start 'mysqld.service'.
Authenticating as: lll,,, (lll)
Password:
polkit-agent-helper-1: pam_authenticate failed: Authentication failure
==== AUTHENTICATION FAILED ===
Failed to start mysqld.service: Access denied
See system logs and 'systemctl status mysqld.service' for details.

其實是沒有權限訪問之類的，所以用ｓｕｄｏ就可以啦。

轉載于:https://www.cnblogs.com/YouXiangLiThon/p/8512488.html

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