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You can use Kubernetes annotations to attach arbitrary non-identifying metadata to objects . Clients such as tools and libraries can retrieve this metadata. Attaching metadata to objects You can use either labels or annotations to attach metadata to Kubernetes objects. Labels can be used to select o
A Secret is an object that contains a small amount of sensitive data such as a password, a token, or a key. Such information might otherwise be put in a Pod specification or in a container image . Using a Secret means that you don't need to include confidential data in your application code. Because
In Kubernetes, namespaces provide a mechanism for isolating groups of resources within a single cluster. Names of resources need to be unique within a namespace, but not across namespaces. Namespace-based scoping is applicable only for namespaced objects (e.g. Deployments, Services, etc.) and not fo
This page describes how Kubernetes allocates devices to workloads with dynamic resource allocation (DRA), and how pre-scheduled Pods interact with the process. How resource allocation with DRA works The following sections describe the workflow for the various types of DRA users and for the Kubernete
Feature state: Beta since Kubernetes v1.27 System component traces record the latency of and relationships between operations in the cluster. Kubernetes components emit traces using the OpenTelemetry Protocol with the gRPC exporter and can be collected and routed to tracing backends using an OpenTel
Feature state: Beta since Kubernetes v1.33; disabled by default More information about this feature To use this feature, you (or a cluster administrator) will need to enable the CoordinatedLeaderElection feature gate for all relevant components in your cluster. See Enable Or Disable Feature Gates fo
An overview of the key components that make up a Kubernetes cluster. This page provides a high-level overview of the essential components that make up a Kubernetes cluster. View source diagram: Components of Kubernetes The components of a Kubernetes cluster Core Components A Kubernetes cluster consi
Field selectors let you select Kubernetes objects based on the value of one or more resource fields. Here are some examples of field selector queries: metadata.name=my-service metadata.namespace!=default status.phase=Pending This kubectl command selects all Pods for which the value of the status.pha
A ConfigMap is an API object used to store non-confidential data in key-value pairs. Pods can consume ConfigMaps as environment variables, command-line arguments, or as configuration files in a volume . A ConfigMap allows you to decouple environment-specific configuration from your container images
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