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Fix metrics README

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Fixes #109
This commit is contained in:
Miek Gieben 2016-04-14 07:00:16 +01:00
parent 8184328dba
commit ec343ce0ce
1 changed files with 8 additions and 7 deletions
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15
middleware/metrics/README.md
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@ -1,6 +1,7 @@
# prometheus
This module enables prometheus metrics for CoreDNS.
This module enables prometheus metrics for CoreDNS. The default location for the metrics is
`localhost:9135`. The metrics path is fixed to `/metrics`.
The following metrics are exported:
@ -9,13 +10,13 @@ The following metrics are exported:
* 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,
and a label `qtype` which old the query type.
The `response_rcode_count_total` has an extra label `rcode` which holds the rcode
of the response.
Each counter has a label `zone` which is the zonename used for the request/response. and a label
`qtype` which old the query type. The `dns_request_count_total` has an extra label `proto` which
holds the transport of the response ("udp" or "tcp"). 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).
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](https://github.com/mholt/caddy/issues/675).