Mirrors/coredns
1
0
Fork 0
mirror of https://github.com/coredns/coredns.git synced 2025-10-27 08:14:18 -04:00
Code Issues Packages Projects Releases Wiki Activity
Files
31851c6acde5431a4acaded6aba90a2958f1cf0e
coredns/middleware/metrics
History
Miek Gieben 2dd8a687b3 Startup notification (#250) 
Stop the caddy message and start our own init notifications.
Log the version of CoreDNS when starting up.
Fix all middleware's setup functions so that return the error prefixed
with *which* middleware was failing; leads to better debuggable errors
when starting up.
2016-09-10 09:16:25 +01:00
..
handler.go
Cleanup: put middleware helper functions in pkgs (#245)
2016-09-07 11:10:16 +01:00
metrics.go
Make CoreDNS a server type plugin for Caddy (#220)
2016-08-19 17:14:17 -07:00
README.md
Update README.md
2016-08-22 14:29:50 -07:00
setup.go
Startup notification (#250)
2016-09-10 09:16:25 +01:00

README.md

prometheus

This module enables prometheus metrics for CoreDNS. The default location for the metrics is localhost:9153. The metrics path is fixed to /metrics.

The following metrics are exported:

  • coredns_dns_request_count_total{zone, proto, family}
  • coredns_dns_request_duration_milliseconds{zone}
  • coredns_dns_request_size_bytes{zone,, proto}
  • coredns_dns_request_transfer_size_bytes{zone,, proto}
  • coredns_dns_request_do_count_total{zone}
  • coredns_dns_request_type_count_total{zone, type}
  • coredns_dns_response_size_bytes{zone, proto}
  • coredns_dns_response_transfer_size_bytes{zone, proto}
  • coredns_dns_response_rcode_count_total{zone, rcode}

Each counter has a label zone which is the zonename used for the request/response.

Extra labels used are:

  • proto which holds the transport of the response ("udp" or "tcp")
  • The address family (family) of the transport (1 = IP (IP version 4), 2 = IP6 (IP version 6)).
  • type which holds the query type. It holds most common types (A, AAAA, MX, SOA, CNAME, PTR, TXT, NS, SRV, DS, DNSKEY, RRSIG, NSEC, NSEC3, IXFR, AXFR and ANY) and "other" which lumps together all other types.
  • The response_rcode_count_total has an extra label rcode which holds the rcode of the response.

If monitoring is enabled, queries that do not enter the middleware chain are exported under the fake domain "dropped" (without a closing dot).

Restarting CoreDNS will stop the monitoring. This is a bug. Also this upstream Caddy bug.

Syntax

prometheus

For each zone that you want to see metrics for.

It optionally takes an address to which the metrics are exported; the default is localhost:9153. The metrics path is fixed to /metrics.

Examples