mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since 日 2022-08-14 16:21:18 CST; 1s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 21824 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=1/FAILURE)
Process: 21801 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)

8月 14 16:21:18 centos systemd[1]: Failed to start MySQL Server.
8月 14 16:21:18 centos systemd[1]: Unit mysqld.service entered failed state.
8月 14 16:21:18 centos systemd[1]: mysqld.service failed.
8月 14 16:21:18 centos systemd[1]: mysqld.service holdoff time over, scheduling restart.
8月 14 16:21:18 centos systemd[1]: Stopped MySQL Server.
8月 14 16:21:18 centos systemd[1]: start request repeated too quickly for mysqld.service
8月 14 16:21:18 centos systemd[1]: Failed to start MySQL Server.
8月 14 16:21:18 centos systemd[1]: Unit mysqld.service entered failed state.
8月 14 16:21:18 centos systemd[1]: mysqld.service failed.