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metrics: use exponentional buckets (#1261)

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* metrics: use exponentional buckets

See  https://github.com/kubernetes/dns/pull/168
This commit is contained in:
Miek Gieben
2017-12-01 11:15:05 +00:00
committed by GitHub
parent f96555476e
commit 917965fa86
3 changed files with 4 additions and 3 deletions
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2
plugin/metrics/README.md
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@@ -6,7 +6,7 @@ The default location for the metrics is `localhost:9153`. The metrics path is fi
The following metrics are exported:
* `coredns_dns_request_count_total{zone, proto, family}` - total query count.
* `coredns_dns_request_duration_milliseconds{zone}` - duration to process each query.
* `coredns_dns_request_duration_seconds{zone}` - duration to process each query.
* `coredns_dns_request_size_bytes{zone, proto}` - size of the request in bytes.
* `coredns_dns_request_do_count_total{zone}` - queries that have the DO bit set
* `coredns_dns_request_type_count_total{zone, type}` - counter of queries per zone and type.

3
plugin/plugin.go
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@@ -7,6 +7,7 @@ import (
"github.com/miekg/dns"
ot "github.com/opentracing/opentracing-go"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/net/context"
)
@@ -102,4 +103,4 @@ func ClientWrite(rcode int) bool {
const Namespace = "coredns"
// TimeBuckets is based on Prometheus client_golang prometheus.DefBuckets
var TimeBuckets = []float64{0.00025, 0.0005, 0.001, 0.0025, .005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10}
var TimeBuckets = prometheus.ExponentialBuckets(0.25, 2, 16) // from 0.25ms to 8 seconds

2
plugin/proxy/README.md
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@@ -98,7 +98,7 @@ payload over HTTPS). Note that with `https_google` the entire transport is encry
If monitoring is enabled (via the *prometheus* directive) then the following metric is exported:
* `coredns_proxy_request_duration_millisecond{proto, proto_proxy, family, to}` - duration per upstream
* `coredns_proxy_request_duration_seconds{proto, proto_proxy, family, to}` - duration per upstream
interaction.
* `coredns_proxy_request_count_total{proto, proto_proxy, family, to}` - query count per upstream.