coredns/middleware/prometheus

prometheus

This module enables prometheus metrics for CoreDNS.

The following metrics are exported:

• coredns_dns_request_count_total
• coredns_dns_request_duration_seconds
• coredns_dns_response_size_bytes
• coredns_dns_response_rcode_count_total

Each counter has a label zone which is the zonename used for the request/response. The request_count metrics has an extra label qtype which holds the qtype. And rcode_count has an extra label which has the rcode.

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 where the metrics are exported, the default is localhost:9153. The metrics path is fixed to /metrics.

Examples