[Dnsmon-test] Second update to DNSMON + retries of DNS queries + 9AM outage
Anand Buddhdev
anandb at ripe.net
Thu Feb 13 17:46:05 CET 2014
On 13/02/2014 17:16, Chris Amin wrote:
Hi Christopher,
> In addition, we have changed a line in the testers page in the section
> comparing the old and the new DNSMON implementations. We previously
> stated that the RIPE Atlas measurements are not retried on failure
> (whereas the old TTM boxes do carry out retries). However, RIPE Atlas
> has gained the ability to carry out an arbitrary number of retries, and
> uses a value of 10 by default. The data that we have collected so far
> for the new DNSMON, and the visualisations, are therefore based on this
> methodology.
>
> We don't want to immediately change to using 0 retries, nor do we want
> to change to match the exact settings of the old DNSMON, without
> gathering feedback from you. So if you have a strong opinion on this,
> please let us know.
I'm speaking here as a DNS server operator, and not as a staff member. I
prefer measurements to NOT use retry, so that if there is an issue with
my DNS servers, I can see it quickly. If a probe uses retries, then it
will hide operational issues.
Regards,
Anand Buddhdev
RIPE NCC