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This article mainly introduces "CentOS8 how to clear the DNS cache". In the daily operation, I believe many people have doubts about how to clear the DNS cache in CentOS8. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts about "how to clear the DNS cache by CentOS8". Next, please follow the editor to study!

The nscd cleanup cache command is as follows:

[root@localhost] # nscd-I hosts

If nscd is not installed, you need to install it manually

\ 1. Install nscd

[root@localhost ~] # yum-y install nscd

\ 2. View status and start commands

[root@localhost ~] # systemctl status nscd # View status systemctl start nscd [root@localhost www.linuxidc.com] # systemctl start nscd # start nscd

\ 3. After starting the nscd service, clear the cache

[root@localhost] # nscd-I hosts

When nscd's hosts caching service is enabled, each internal interface request will not initiate a dns resolution request, but will directly hit the nscd cache hash table to obtain the corresponding server ip address, which can reduce the response time of the interface when a large number of internal interface requests are made.

At this point, the study on "how to clear the DNS cache by CentOS8" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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