[Pdns-users] Return answer according to availability of a server
riccardo.brunetti at host.it
Tue Sep 26 16:43:20 UTC 2023
I'm trying to figure out if it is possible to make pdns (or dnsdist) to return a different answer according to the availability of a service.
Suppose we have:
- server A with IP: XXX.XXX.XXX.XXX
- server B with IP: YYY.YYY.YYY.YYY
Server A and B are two web servers which are configured to answer to a given http GET like http://myservice.net.
They are both configured in the same way and are independent.
I would like the DNS query to return XXX.XXX.XXX.XXX as long as the server A is working (returns 200 to the GET) or return YYY.YYY.YYY.YYY when server A is not working.
In other words, I would like to have two records A for myservice.net with a somehow "intelligent" behavior and not a simple round-robin.
Can you suggest me how to achieve this, if it's possible?
Thanks a lot
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