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de9510b940
With the built in prom. metrics provider, the k8s machinery doesnt deregister metrics when controllers are removed. So over time as things like clusters are created or removed the metrics are not cleaned up. The metrics types for the cache and queue are also very large. They can take ~1GB of RAM in a 100 cluster setup. Also, Rancher is not exposing these stats so they are unobservable.
72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
package controller
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import (
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/util/workqueue"
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)
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type noopMetric struct{}
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func (noopMetric) Inc() {}
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func (noopMetric) Dec() {}
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func (noopMetric) Observe(float64) {}
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func (noopMetric) Set(float64) {}
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type noopWorkqueueMetricsProvider struct{}
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func (noopWorkqueueMetricsProvider) NewDepthMetric(name string) workqueue.GaugeMetric {
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return noopMetric{}
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}
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func (noopWorkqueueMetricsProvider) NewAddsMetric(name string) workqueue.CounterMetric {
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return noopMetric{}
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}
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func (noopWorkqueueMetricsProvider) NewLatencyMetric(name string) workqueue.SummaryMetric {
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return noopMetric{}
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}
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func (noopWorkqueueMetricsProvider) NewWorkDurationMetric(name string) workqueue.SummaryMetric {
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return noopMetric{}
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}
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func (noopWorkqueueMetricsProvider) NewRetriesMetric(name string) workqueue.CounterMetric {
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return noopMetric{}
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}
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type noopCacheMetricsProvider struct{}
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func (noopCacheMetricsProvider) NewListsMetric(name string) cache.CounterMetric { return noopMetric{} }
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func (noopCacheMetricsProvider) NewListDurationMetric(name string) cache.SummaryMetric {
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return noopMetric{}
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}
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func (noopCacheMetricsProvider) NewItemsInListMetric(name string) cache.SummaryMetric {
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return noopMetric{}
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}
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func (noopCacheMetricsProvider) NewWatchesMetric(name string) cache.CounterMetric { return noopMetric{} }
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func (noopCacheMetricsProvider) NewShortWatchesMetric(name string) cache.CounterMetric {
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return noopMetric{}
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}
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func (noopCacheMetricsProvider) NewWatchDurationMetric(name string) cache.SummaryMetric {
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return noopMetric{}
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}
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func (noopCacheMetricsProvider) NewItemsInWatchMetric(name string) cache.SummaryMetric {
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return noopMetric{}
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}
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func (noopCacheMetricsProvider) NewLastResourceVersionMetric(name string) cache.GaugeMetric {
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return noopMetric{}
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}
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func DisableAllControllerMetrics() {
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DisableControllerReflectorMetrics()
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DisableControllerWorkqueuMetrics()
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}
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func DisableControllerWorkqueuMetrics() {
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workqueue.SetProvider(noopWorkqueueMetricsProvider{})
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}
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func DisableControllerReflectorMetrics() {
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cache.SetReflectorMetricsProvider(noopCacheMetricsProvider{})
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}
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