49 lines
1.8 KiB
Markdown
49 lines
1.8 KiB
Markdown
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---
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title: Controller manager metrics
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---
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{% capture overview %}
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Controller manager metrics provide important insight into the performance and health of
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the controller manager.
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{% endcapture %}
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{% capture body %}
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## What are controller manager metrics
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Controller manager metrics provide important insight into the performance and health of the controller manager.
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These metrics include common Go language runtime metrics such as go_routine count and controller specific metrics such as
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etcd request latencies or Cloudprovider (AWS, GCE, Openstack) API latencies that can be used
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to gauge the health of a cluster.
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Starting from Kubernetes 1.7, detailed Cloudprovider metrics are available for storage operations for GCE, AWS, Vsphere and Openstack.
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These metrics can be used to monitor health of persistent volume operations.
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For example, for GCE these metrics are called:
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```
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cloudprovider_gce_api_request_duration_seconds { request = "instance_list"}
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cloudprovider_gce_api_request_duration_seconds { request = "disk_insert"}
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cloudprovider_gce_api_request_duration_seconds { request = "disk_delete"}
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cloudprovider_gce_api_request_duration_seconds { request = "attach_disk"}
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cloudprovider_gce_api_request_duration_seconds { request = "detach_disk"}
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cloudprovider_gce_api_request_duration_seconds { request = "list_disk"}
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```
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## Configuration
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In a cluster, controller-manager metrics are available from `http://localhost:10252/metrics`
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from the host where the controller-manager is running.
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The metrics are emitted in [prometheus format](https://prometheus.io/docs/instrumenting/exposition_formats/) and are human readable.
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In a production environment you may want to configure prometheus or some other metrics scraper
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to periodically gather these metrics and make them available in some kind of time series database.
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{% endcapture %}
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{% include templates/concept.md %}
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