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			78 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			78 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
/*
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Copyright 2016 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 node
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import (
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	"sync"
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	"github.com/prometheus/client_golang/prometheus"
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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 = "unhealty_nodes_in_zone"
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	EvictionsNumberKey      = "evictions_number"
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)
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var (
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	ZoneHealth = prometheus.NewGaugeVec(
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		prometheus.GaugeOpts{
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			Subsystem: NodeControllerSubsystem,
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			Name:      ZoneHealthStatisticKey,
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			Help:      "Gauge measuring percentage of healty nodes per zone.",
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		},
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		[]string{"zone"},
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	)
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	ZoneSize = prometheus.NewGaugeVec(
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		prometheus.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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		},
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		[]string{"zone"},
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	)
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	UnhealthyNodes = prometheus.NewGaugeVec(
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		prometheus.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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		},
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		[]string{"zone"},
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	)
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	EvictionsNumber = prometheus.NewCounterVec(
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		prometheus.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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		},
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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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func Register() {
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	registerMetrics.Do(func() {
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		prometheus.MustRegister(ZoneHealth)
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		prometheus.MustRegister(ZoneSize)
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		prometheus.MustRegister(UnhealthyNodes)
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		prometheus.MustRegister(EvictionsNumber)
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	})
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}
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