76 lines
2.6 KiB
Go
76 lines
2.6 KiB
Go
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package vars
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import (
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"github.com/coredns/coredns/plugin"
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"github.com/prometheus/client_golang/prometheus"
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)
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// Request* and Response* are the prometheus counters and gauges we are using for exporting metrics.
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var (
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RequestCount = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "request_count_total",
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Help: "Counter of DNS requests made per zone, protocol and family.",
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}, []string{"server", "zone", "proto", "family"})
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RequestDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "request_duration_seconds",
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Buckets: plugin.TimeBuckets,
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Help: "Histogram of the time (in seconds) each request took.",
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}, []string{"server", "zone"})
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RequestSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "request_size_bytes",
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Help: "Size of the EDNS0 UDP buffer in bytes (64K for TCP).",
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Buckets: []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
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}, []string{"server", "zone", "proto"})
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RequestDo = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "request_do_count_total",
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Help: "Counter of DNS requests with DO bit set per zone.",
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}, []string{"server", "zone"})
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RequestType = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "request_type_count_total",
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Help: "Counter of DNS requests per type, per zone.",
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}, []string{"server", "zone", "type"})
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ResponseSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "response_size_bytes",
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Help: "Size of the returned response in bytes.",
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Buckets: []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
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}, []string{"server", "zone", "proto"})
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ResponseRcode = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: subsystem,
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Name: "response_rcode_count_total",
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Help: "Counter of response status codes.",
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}, []string{"server", "zone", "rcode"})
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Panic = prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Name: "panic_count_total",
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Help: "A metrics that counts the number of panics.",
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})
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)
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const (
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subsystem = "dns"
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// Dropped indicates we dropped the query before any handling. It has no closing dot, so it can not be a valid zone.
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Dropped = "dropped"
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)
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