Choosing A records based on hosts' load?

[Marek Kozlowski]

:-)

On 1/18/21 9:59 AM, Reindl Harald wrote:
> Am 18.01.21 um 09:49 schrieb Marek Kozlowski:
>> I believe that such a solution (read to install) should exist. 
>> Unfortunately I don't know the magic keywords to find it:
>>
>> I have a group of hosts with different IPs offering the same services. 
>> I'm able to install some agents on them for monitoring their 
>> network/cpu/number of users/whatever utilization. I'm wondering if 
>> there is an option for BIND9 to obtain those load parameters on a 
>> regular basis (let's say: every 10 minutes) and when queried for the A 
>> record return ONLY one IP address - the one of the server with the 
>> lowest utilization?
>>
>> It can be implemented on those servers but in the solution I'm asking 
>> about the key point is that the BIND server takes the decision.
> 
> this can't work - only a minority of clients is asking your nameserver 
> directly, most talk to caches
> 
> you try to solve the problem on the wrong side
> you need a loadbalancer in front of the cluster

The problem is: I'm supervising the BIND. I'm NOT supervising the other 
servers. Their admins requested such a solution. Personally I agree with 
your opinion but... The question is: is there such a ready solution as I 
described?

Best regards,
Marek