Hi Christoph, On 10/24/21 10:49, Christoph via Pdns-users wrote:
while going over the list of prometheus metrics available in PowerDNS Recursor I found this one:resource-limitscounts number of queries that could not be performed because of resource limitshttps://docs.powerdns.com/recursor/metrics.html#resource-limitsI guess if this value is increasing regularly it is a sign of issues. What kind of resource limits are hit when this counter increases? Are there other metrics that allow further understanding the possible root causes?
This counter is increased when we encounter a network issue that does not seem to be caused by the remote end but by a problem on our side, like if the recursor runs out of file descriptors or if we don't have a network route to contact a given IP address, for example. I would suggest checking and likely increasing the number of file descriptors available to the recursor as a first step, and then trying to correlate the periods where that counter is increasing with a growth of others network-related counters.
Best regards, -- Remi Gacogne PowerDNS.COM BV - https://www.powerdns.com/
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