mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
88 lines
3.2 KiB
Go
88 lines
3.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"sync"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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const kubeProxySubsystem = "kubeproxy"
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var (
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// SyncProxyRulesLatency is the latency of one round of kube-proxy syncing proxy rules.
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SyncProxyRulesLatency = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: kubeProxySubsystem,
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Name: "sync_proxy_rules_duration_seconds",
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Help: "SyncProxyRules latency in seconds",
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Buckets: prometheus.ExponentialBuckets(0.001, 2, 15),
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},
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)
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// DeprecatedSyncProxyRulesLatency is the latency of one round of kube-proxy syncing proxy rules.
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DeprecatedSyncProxyRulesLatency = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: kubeProxySubsystem,
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Name: "sync_proxy_rules_latency_microseconds",
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Help: "(Deprecated) SyncProxyRules latency in microseconds",
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Buckets: prometheus.ExponentialBuckets(1000, 2, 15),
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},
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)
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// NetworkProgrammingLatency is defined as the time it took to program the network - from the time
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// the service or pod has changed to the time the change was propagated and the proper kube-proxy
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// rules were synced. Exported for each endpoints object that were part of the rules sync.
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// See https://github.com/kubernetes/community/blob/master/sig-scalability/slos/network_programming_latency.md
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// Note that the metrics is partially based on the time exported by the endpoints controller on
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// the master machine. The measurement may be inaccurate if there is a clock drift between the
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// node and master machine.
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NetworkProgrammingLatency = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: kubeProxySubsystem,
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Name: "network_programming_duration_seconds",
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Help: "In Cluster Network Programming Latency in seconds",
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// TODO(mm4tt): Reevaluate buckets before 1.14 release.
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// The last bucket will be [0.001s*2^20 ~= 17min, +inf)
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Buckets: prometheus.ExponentialBuckets(0.001, 2, 20),
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},
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)
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)
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var registerMetricsOnce sync.Once
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// RegisterMetrics registers kube-proxy metrics.
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func RegisterMetrics() {
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registerMetricsOnce.Do(func() {
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prometheus.MustRegister(SyncProxyRulesLatency)
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prometheus.MustRegister(DeprecatedSyncProxyRulesLatency)
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prometheus.MustRegister(NetworkProgrammingLatency)
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})
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}
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// SinceInMicroseconds gets the time since the specified start in microseconds.
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func SinceInMicroseconds(start time.Time) float64 {
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return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds())
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}
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// SinceInSeconds gets the time since the specified start in seconds.
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func SinceInSeconds(start time.Time) float64 {
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return time.Since(start).Seconds()
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}
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