Metrics server aggregates the usage of data over the cluster of a resource.
Metrics server uses summary API exposed by kubelet that runs on each node of cluster to collect metrics.
Collector Type: Agent
Category: Application Monitors
Application Name: k8s Metricserver
Global Template Name: OKD Metric Server
Validate
Go to Resources under the Infrastructure tab to check if your resources are onboarded and the metrics are collected.
Collected Metrics
| Metric Name | Display Name | Description |
|---|---|---|
| metrics_server.go_gc_duration_seconds_sum | Go GC Duration Seconds Sum | A summary of the GC invocation durations. |
| metrics_server.authenticated_user_requests | Authenticated User Requests | Counter of authenticated requests broken out by username. |
| metrics_server.go_goroutines | Go Goroutines | Number of goroutines that currently exist. |
| metrics_server.manager_tick_duration_sum | Manager Tick Duration Sum | The total time spent collecting and storing metrics in seconds. |
| metrics_server.scraper_duration_count | Scraper Duration Count | Time spent scraping sources in seconds. |
| metrics_server.scraper_duration_sum | Scraper Duration Sum | A summary of the GC invocation durations. |
| metrics_server.scraper_last_time | Scraper Last Time | Last time metrics-server performed a scrape since unix epoch in seconds. |
| metrics_server.go_gc_duration_seconds_quantile | Go GC Duration Seconds Quantile | A summary of the GC invocation durations. |
| metrics_server.kubelet_summary_request_duration_sum | Kubelet Summary Request Duration Sum | The Kubelet summary request latencies in seconds. |
| metrics_server.kubelet_summary_scrapes_total | Kubelet Summary Scrapes Total | Total number of attempted Summary API scrapes done by Metrics Server. |
| metrics_server.manager_tick_duration_count | Manager Tick Duration Count | The total time spent collecting and storing metrics in seconds. |
| metrics_server.process_max_fds | Process Max Fds | Maximum number of open file descriptors. |
| metrics_server.process_open_fds | Process Open Fds | Number of open file descriptors. |
| metrics_server.go_gc_duration_seconds_count | Go GC Duration Seconds Count | A summary of the GC invocation durations. |
| metrics_server.kubelet_summary_request_duration_count | Kubelet Summary Request Duration Count | The Kubelet summary request latencies in seconds. |
| metrics_server.process_cpu_seconds_total | Process Cpu Seconds Total | Total user and system CPU time spent in seconds. |