How to Flush the DNS Cache in Windows, Mac or Linux

If you are running BIND as a resolver for your office - ie. not forwarding to another a resolver. Flush everything in the cache: rndc flush.

Clear Cache On BIND9. It is as simple as: 1, rndc flush. rndc flush. Filed under Linux, Server · Click here to cancel reply. Leave a Comment.

BIND 9.3.0 will support flushing all of the records attached to a particular domain name with rndc flushname.

If you know the records that are wrong, then you may be able to delete them from cache without restarting your nameserver or flushing the entire cache.

This article explores the process of managing the cache in a BIND DNS server, specifically focusing on how to view and clear the cache effectively.

Now to finally flush the DNS cache, follow the steps below. With BIND active: sudo rndc flush. Then run this command in order to dump the cache:

The cache is held only in RAM. However you can view it with rndc dumpdb -cache which will be saved (on Debian and Ubuntu) by default to /var/cache/bind/.

yes it will; but you dont have to reboot the server; try: rndc flush. or just restart bind.

rndc flush flushes the server's cache. You cannot go and edit what is already there. If this is a local zone, freeze it, edit it and increase the serial number.

Learn to clear DNS cache on Windows, macOS, and Linux. Improve network performance by following our step-by-step guide.