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System component metrics can give a better look into what is happening inside them. Metrics are particularly useful for building dashboards and alerts. Kubernetes components emit metrics in Prometheus format . This format is structured plain text, designed so that people and machines can both read i
Note: This section links to third party projects that provide functionality required by Kubernetes. The Kubernetes project authors aren't responsible for these projects, which are listed alphabetically. To add a project to this list, read the content guide before submitting a change. More informatio
By default, containers run with unbounded compute resources on a Kubernetes cluster. Using Kubernetes resource quotas , administrators (also termed cluster operators ) can restrict consumption and creation of cluster resources (such as CPU time, memory, and persistent storage) within a specified nam
This page outlines the differences in how resources are managed between Linux and Windows. On Linux nodes, cgroups are used as a pod boundary for resource control. Containers are created within that boundary for network, process and file system isolation. The Linux cgroup APIs can be used to gather
Device plugins let you configure your cluster with support for devices or resources that require vendor-specific setup, such as GPUs, NICs, FPGAs, or non-volatile main memory. Feature state: Stable since Kubernetes v1.26 Kubernetes provides a device plugin framework that you can use to advertise sys
kubectl is the primary command-line tool for communicating with a Kubernetes cluster. This page provides an overview of kubectl and its role in the Kubernetes ecosystem. Kubernetes provides a command line tool for communicating with a Kubernetes cluster's control plane , using the Kubernetes API. Th
Kubernetes can be configured to use swap memory on a node , allowing the kernel to free up physical memory by swapping out pages to backing storage. This is useful for multiple use-cases. For example, nodes running workloads that can benefit from using swap, such as those that have large memory foot
The Kubernetes API server stores objects, relying on an etcd-compatible backing store (often, the backing storage is etcd itself). Each object is serialized using a particular version of that API type; for example, the v1 representation of a ConfigMap. Kubernetes uses the term storage version to des
The kubectl command-line tool supports several different ways to create and manage Kubernetes objects . This document provides an overview of the different approaches. Read the Kubectl book for details of managing objects by Kubectl. Management techniques Warning: A Kubernetes object should be manag
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