mirror of https://github.com/coredns/coredns.git synced 2025-11-02 02:03:13 -05:00

Files

Miek Gieben 8555716046 Cleanups and tests (#272 )

For some reasons there was a dnsserver/middleware.go that defined
the middleware handlers. This code was a repeat from
middleware/middleware.go. Removed dnsserver/middleware.go and replaced
all uses of dnsserver.Middleware with middleware.Middleware.

Added dnsserver/address_test.go to test the zone normalization (and to
improve the test coverage). The deleted file will also improve the test
coverage :)

2016-09-19 11:26:00 +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

Cleanups and tests (#272 )

2016-09-19 11:26:00 +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.

README.md

prometheus

Syntax

Examples