nanog mailing list archives
Re: DNS cache Validation
From: Mark Tinka <mark.tinka () seacom mu>
Date: Tue, 19 May 2020 11:11:27 +0200
On 19/May/20 10:31, Mukund Sivaraman wrote:
(1) Check the size of your cache and ensure that it is not too small and that it is bound. The max-cache-size config option will limit it. In old versions of named, there was no limit. Current versions have an automatic limit. You want this size to be at least a few hundred MB for a small LAN and larger if it is a widely used resolver. Check the "cache records deleted due to memory exhaustion" counter in rndc stats output.
In current versions of BIND, my understanding is that the default value is 90% of the detected physical memory, in case nothing specific is defined by the operator. Mark.
Current thread:
- DNS cache Validation Justin Wilson (Lists) (May 18)
- Re: DNS cache Validation Adam Kennedy via NANOG (May 18)
- Re: DNS cache Validation Mukund Sivaraman (May 19)
- Re: DNS cache Validation Mark Tinka (May 19)