title: PowerDNS Recursor: Query rates
agents: linux
catalog: app/powerdns
license: GPLv2
author: Christian Wirtz
distribution: powerdns-mkp
description:
 Rates for the recursor's incoming and outgoing traffic: questions received,
 outgoing queries to authoritative servers, and the split of answers into
 NOERROR, NXDOMAIN and SERVFAIL.

 Upstream problems are tracked separately: outgoing timeouts, throttled
 outgoing queries and unreachable authoritative servers. Locally caused drops
 are also covered: over-capacity drops, resource limits hit, policy drops, and
 rejected queries from clients outside the ACL.

 The share of questions answered with SERVFAIL is computed as well, with levels
 at 5 and 20 percent. On a healthy resolver this is dominated by genuinely
 broken remote domains and sits well below one percent.

 All values are counter rates. The first check after discovery reports
 {Initializing counters}, and a daemon restart causes one skipped cycle instead
 of a bogus negative rate.

discovery:
 One service is created when the {questions} counter is present.
