Mysql报错Forcing close of thread 139 user: 'root'

最近重启服务器的mysql总是报大量的如下错误：

160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 139  user: 'root'
160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 138  user: 'root'
160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 137  user: 'root'
160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 136  user: 'pdss'
160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 131  user: 'root'
160330  9:14:26 [Warning] /usr/libexec/mysqld: Forcing close of thread 130  user: 'csm'

这个错误其实是mysql在对DNS做反查，由于反查的接续速度过慢，大量的查询处理不及时，线程得不到释放，造成MySQL“ 假死”。

解决办法：

linux服务器

修改mysql的配置文件（my.cnf）在[mysqld]下添加：

　　skip-name-resolve

windows服务器

修改mysql的配置文件（my.ini）在[mysqld]下添加:

    skip-lockingskip-name-resolve

修改完成后，重启mysql服务。

转载于:https://blog.51cto.com/garany/1758279

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