13518219792
小编给大家分享一下怎么解决MySQL使用skip-name-resolve解决外网连接客户端过慢的问题，希望大家阅读完这篇文章后大所收获，下面让我们一起去探讨吧！
创新互联长期为成百上千客户提供的网站建设服务，团队从业经验10年，关注不同地域、不同群体，并针对不同对象提供差异化的产品和服务；打造开放共赢平台，与合作伙伴共同营造健康的互联网生态环境。为安康企业提供专业的成都网站设计、做网站，安康网站改版等技术服务。拥有10余年丰富建站经验和众多成功案例,为您定制开发。
使用以下进行解决
[mysqld] skip-name-resolve skip-grant-tables
官方的解释
How MySQL
uses DNS When a new thread connects to mysqld, mysqld will
spawn a new thread to handle the request. This thread will first check
if the hostname is in the hostname cache. If not the thread will call
gethostbyaddr_r() and gethostbyname_r() to resolve the hostname. If
the operating system doesn't support the above thread-safe calls, the
thread will lock a mutex and call gethostbyaddr() and gethostbyname()
instead. Note that in this case no other thread can resolve other
hostnames that is not in the hostname cache until the first thread is
ready. You can disable DNS host lookup by starting mysqld with
–skip-name-resolve. In this case you can however only use IP names in
the MySQL privilege tables. If you have a very slow DNS and many
hosts, you can get more performance by either disabling DNS lookop
with –skip-name-resolve or by increasing the HOST_CACHE_SIZE define
(default: 128) and recompile mysqld. You can disable the hostname
cache with –skip-host-cache. You can clear the hostname cache with
FLUSH HOSTS or mysqladmin flush-hosts. If you don't want to allow
connections over TCP/IP, you can do this by starting mysqld with
–skip-networking.
根据文档说明，如果你的mysql主机查询DNS很慢或是有很多客户端主机时会导致连接很慢，由于我们的开发机器是不能够连接外网的，所以DNS解析是不可能完成的，从而也就明白了为什么连接那么慢了。同时，请注意在增加该配置参数后，mysql的授权表中的host字段就不能够使用域名而只能够使用 ip地址了，因为这是禁止了域名解析的结果。
看完了这篇文章，相信你对怎么解决MySql使用skip-name-resolve解决外网连接客户端过慢的问题有了一定的了解，想了解更多相关知识，欢迎关注创新互联行业资讯频道，感谢各位的阅读！
