[dnsdist] wrandom with downed servers?

Jacob Bunk Nielsen jbn at one.com
Fri Jun 3 04:11:14 UTC 2022

On 03/06/2022 01.41, Aaron de Bruyn via dnsdist wrote:
> The goal was to make sure we can serve 'somecustomer.local' (the 
> blasted Windows domain) should the local Windows Server go down and 
> also continue to serve external domains without accidentally sending 
> them queries for somecustomer.local.
> [...]
> # The local DC has the highest priority in the somecustomer pool 
> because the VPN is slow.
> newServer ({address='ip.of.local.windows.dns', 
> name='local-windows-dns', pool='somecustomer', qps=500, 
> weight=2147483647})

It sounds to me like you really want to use the firstAvailable policy 
rather than wrandom, especially when you set a local QPS limit.

See also https://dnsdist.org/guides/serverselection.html

Best regards,


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