mysqld启动“ Can't start server: Bind on TCP/IP port: Address already in ...

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                        mysqld启动“ Can't start server: Bind on TCP/IP port: Address already in use
[iyunv@localhost ~]# vi /var/log/mysqld.log  


进入log日志发现报以下的错误：
170901  4:56:54  InnoDB: Initializing buffer pool, size = 8.0M
170901  4:56:54  InnoDB: Completed initialization of buffer pool
170901  4:56:55  InnoDB: Started; log sequence number 0 44233
170901  4:56:55 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use
170901  4:56:55 [ERROR] Do you already have another mysqld server running on port: 3306 ?
170901  4:56:55 [ERROR] Aborting


这个问题是因为3306端口被占用：
[iyunv@localhost ~]# netstat -tunlp|grep mysql

tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      1672/mysqld         


[iyunv@localhost ~]# kill -9 1672
[iyunv@localhost ~]# service mysqld start
正在启动 mysqld：                                          [确定]


[iyunv@localhost ~]# mysqladmin -uroot password 123456
[iyunv@localhost ~]# mysql -uroot -p123456
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.1.73 Source distribution

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mysql>



解决啦！！！！！