mysqld 状态显示已停止但它实际上运行

Question

我使用 CentOS6 Hortonworks Sandbox。 当我跑步时：

[root@sandbox-hdp ~]# service mysqld stop

它停止了，我检查了：

[root@sandbox-hdp ~]# service mysqld status
mysqld is stopped

到目前为止一切都很好。但是当我试图从这个开始时：

[root@sandbox-hdp ~]# service mysqld start
Starting mysqld:                                           [  OK  ]

我又检查了一遍：

[root@sandbox-hdp ~]# service mysqld status
mysqld is stopped

但是现在发生了奇怪的事情：

[root@sandbox-hdp ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5486
Server version: 5.6.39 MySQL Community Server (GPL)

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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

我不明白这怎么会发生？

Answer 1

​我解决了。我通过以下方式学习了 mysqld pid：

top

​然后杀死它

kill 24678

​我启动了mysqld：

service start mysqld

问题是：

service mysqld stop

​无法停止 mysqld。