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84 lines
2.4 KiB
Go
84 lines
2.4 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 nodelifecycle
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import (
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"sync"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/legacyregistry"
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)
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const (
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nodeControllerSubsystem = "node_collector"
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zoneHealthStatisticKey = "zone_health"
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zoneSizeKey = "zone_size"
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zoneNoUnhealthyNodesKey = "unhealthy_nodes_in_zone"
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evictionsNumberKey = "evictions_number"
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)
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var (
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zoneHealth = metrics.NewGaugeVec(
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&metrics.GaugeOpts{
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Subsystem: nodeControllerSubsystem,
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Name: zoneHealthStatisticKey,
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Help: "Gauge measuring percentage of healthy nodes per zone.",
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"zone"},
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)
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zoneSize = metrics.NewGaugeVec(
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&metrics.GaugeOpts{
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Subsystem: nodeControllerSubsystem,
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Name: zoneSizeKey,
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Help: "Gauge measuring number of registered Nodes per zones.",
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"zone"},
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)
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unhealthyNodes = metrics.NewGaugeVec(
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&metrics.GaugeOpts{
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Subsystem: nodeControllerSubsystem,
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Name: zoneNoUnhealthyNodesKey,
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Help: "Gauge measuring number of not Ready Nodes per zones.",
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"zone"},
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)
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evictionsNumber = metrics.NewCounterVec(
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&metrics.CounterOpts{
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Subsystem: nodeControllerSubsystem,
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Name: evictionsNumberKey,
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Help: "Number of Node evictions that happened since current instance of NodeController started.",
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"zone"},
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)
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)
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var registerMetrics sync.Once
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// Register the metrics that are to be monitored.
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func Register() {
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registerMetrics.Do(func() {
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legacyregistry.MustRegister(zoneHealth)
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legacyregistry.MustRegister(zoneSize)
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legacyregistry.MustRegister(unhealthyNodes)
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legacyregistry.MustRegister(evictionsNumber)
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})
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}
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