Unit mysqld.service could not be found.

• 具体命令

service mysqld status
systemctl status mysqld

结果

Unit mysqld.service could not be found.

查看mysql的启动状态：

 

  service mysqld status

  或者

  service mysql status

如果是 mysqld is stopped 那就说明mysql服务是停止状态；

如果是 mysqld is running 那就说明mysql服务是启动状态。

 

https://blog.csdn.net/weixin_43404791/article/details/105174074

找到mysql.server文件，这个文件据说与mysqld文件一模一样，只是文件名不同
[root@ldy ~]$ find / -name mysql.server
/usr/local/mysql-8.0.13/support-files/mysql.server

复制　mysql.server文件到/etc/init.d/目录下，重命名为mysqld
[root@ldy ~]$ cp /usr/local/mysql-8.0.13/support-files/mysql.server /etc/init.d/mysqld

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查看mysqld　status状态
[root@ldy ~]$ service mysqld status
/etc/init.d/mysqld: line 239: my_print_defaults: command not found