怎么解決MySql使用skip-name-resolve解決外網連接客戶端過慢的問題

小編給大家分享一下怎么解決MySql使用skip-name-resolve解決外網連接客戶端過慢的問題，希望大家閱讀完這篇文章后大所收獲，下面讓我們一起去探討吧！

使用以下進行解決

[mysqld]
skip-name-resolve
skip-grant-tables

官方的解釋

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.

根據文檔說明，如果你的mysql主機查詢DNS很慢或是有很多客戶端主機時會導致連接很慢，由于我們的開發機器是不能夠連接外網的，所以DNS解析是不可能完成的，從而也就明白了為什么連接那么慢了。同時，請注意在增加該配置參數后，mysql的授權表中的host字段就不能夠使用域名而只能夠使用 ip地址了，因為這是禁止了域名解析的結果。

看完了這篇文章，相信你對怎么解決MySql使用skip-name-resolve解決外網連接客戶端過慢的問題有了一定的了解，想了解更多相關知識，歡迎關注億速云行業資訊頻道，感謝各位的閱讀！