It seems to be modern, to try to solve all problems with DNS. But DNS is
neither a router nor a load balancer and certainly not a HA cluster.
"Always use the proper tool. If the proper tool isn't available, use a
hammer." (Lt. Commander Montgomery „Scotty“ Scott)
Am 17.12.2012 12:59, schrieb Peter van Dijk:
Hello,
On Dec 17, 2012, at 12:39 , Marc Haber wrote:
On Mon, Dec 17, 2012 at 10:17:59AM +0530, Manish Rane wrote:
By the way PDNS Development Team can think of such feature and probably
include in upcoming release? That would make the product more versatile and
complete.
In my opinion, this does not belong into a DNS server. PowerDNS has
versatile backends and flexible interfaces to avoid bloat in PowerDNS
itself.
Well said.
If this were to happen 'inside' of PowerDNS, it would happen in a backend
written
for this purpose.
However, as the original poster and at least one reply have pointed out, there
are several ways to make this happen without changing PowerDNS:
1) a pipebackend or remotebackend script that decides what A to respond based
on some external state (from Nagios perhaps).
2) a script that updates your MySQL database based on said external state.
We don't have scripts for either 1) or 2) ready, but some other people might.
Such scripts are not hard to write.
One pointer: make sure to disable or lower the default cache timeouts in
PowerDNS
if you want quick fail overs.
Kind regards,
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