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A health middleware

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Start http handler on port 8080 and return OK. Also add some

documentation fixes for the prometheus middleware.
This commit is contained in:
Miek Gieben
2016-04-06 09:21:46 +01:00
parent ecb53addd6
commit 68171c7a63
7 changed files with 103 additions and 8 deletions
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9
middleware/prometheus/README.md
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@@ -9,9 +9,10 @@ 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.
The `request_count` metrics has an extra label `qtype` which holds the qtype. And
`rcode_count` has an extra label which has the rcode.
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.
Restarting CoreDNS will stop the monitoring. This is a bug. Also [this upstream
Caddy bug](https://github.com/mholt/caddy/issues/675).
@@ -25,6 +26,6 @@ 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:9154`. The metrics path is fixed to `/metrics`.
is `localhost:9135`. The metrics path is fixed to `/metrics`.
## Examples