Once your workloads are running, you can use the commands in the API. Append a hash of the configmap to its name. The method used to override the generated object: json, merge, or strategic. The edit command allows you to directly edit any API resource you can retrieve via the command-line tools. It can be launched as a cluster add-on. of current replicas. Prefix to serve static files under, if static file directory is specified. Comma separated labels to apply to the pod. Create a service for a replicated nginx using replica set, which serves on port 80 and connects to the containers on port 8000, Create a service for an nginx deployment, which serves on port 80 and connects to the containers on port 8000, Expose a resource as a new Kubernetes service. # set a context utilizing a specific username and namespace. is calculated and averaged. Regular expression for hosts that the proxy should accept. This can be done with kubectl annotate. $ kubectl create externalname NAME --external-name external.name [--dry-run=server|client|none], Create a new LoadBalancer service named my-lbs. This lets you configure scaling thresholds for the containers that matter most in a particular Pod. or NAME is the name of a particular Kubernetes resource. The Update the annotations on one or more resources. You can optionally set a condition, so the scale is only changed when theres a specific number of existing replicas, avoiding unintentional resizes in the wrong direction. If you do not already have a The default format is YAML. $ kubectl config set-cluster NAME [--server=server] [--certificate-authority=path/to/certificate/authority] [--insecure-skip-tls-verify=true] [--tls-server-name=example.com], Set the user field on the gce context entry without touching other values, $ kubectl config set-context [NAME | --current] [--cluster=cluster_nickname] [--user=user_nickname] [--namespace=namespace], Set only the "client-key" field on the "cluster-admin" # entry, without touching other values, Set basic auth for the "cluster-admin" entry, Embed client certificate data in the "cluster-admin" entry, Enable the Google Compute Platform auth provider for the "cluster-admin" entry, Enable the OpenID Connect auth provider for the "cluster-admin" entry with additional args, Remove the "client-secret" config value for the OpenID Connect auth provider for the "cluster-admin" entry, Enable new exec auth plugin for the "cluster-admin" entry, Define new exec auth plugin args for the "cluster-admin" entry, Create or update exec auth plugin environment variables for the "cluster-admin" entry, Remove exec auth plugin environment variables for the "cluster-admin" entry. In order for the Paused resources will not be reconciled by a controller. keepalive specifies the keep-alive period for an active network connection. These paths are merged. Any other values should contain a corresponding time unit (e.g. Container image to use for debug container. The following example creates a basic deployment of the NGINX web server. When creating a config map based on a directory, each file whose basename is a valid key in the directory will be packaged into the config map. To change such fields, use replace --force, which deletes and re-creates the resource. Useful steady state information about the service and important log messages that may correlate to significant changes in the system. installation. For example, if you have a web application and a logging sidecar, you can scale based on the resource You can scale every resource of a particular type by supplying the --all flag, such as this example to scale all the deployments in your default namespace: This selects every matching resource inside the currently active namespace. Le script de compltion de kubectl pour Zsh peut tre gnr avec la commande kubectl completion zsh. If true, include managed fields in the diff. or $ kubectl create deployment NAME --image=image -- [COMMAND] [args], Create a single ingress called 'simple' that directs requests to foo.com/bar to svc # svc1:8080 with a tls secret "my-cert", Create a catch all ingress of "/path" pointing to service svc:port and Ingress Class as "otheringress", Create an ingress with two annotations: ingress.annotation1 and ingress.annotations2, Create an ingress with the same host and multiple paths, Create an ingress with multiple hosts and the pathType as Prefix, Create an ingress with TLS enabled using the default ingress certificate and different path types, Create an ingress with TLS enabled using a specific secret and pathType as Prefix. If you do not already have a Set number of retries to complete a copy operation from a container. replica count or HPA's minimum replica count. Must be one of (yaml, json). Using kubectl scale is generally the fastest and most reliable way to scale your workloads. cannot exactly determine the first time a pod becomes ready when Diff configurations specified by file name or stdin between the current online configuration, and the configuration as it would be if applied. Delete all resources, in the namespace of the specified resource types. The HorizontalPodAutoscaler controller then queries for these custom metrics from the Kubernetes If any of these metrics cannot be converted Only applies to golang and jsonpath output formats. To edit in JSON, specify "-o json". Output the patch if the resource is edited. The flag may only be set once and no merging takes place. Manually scale pods. One of: (json, yaml, name, go-template, go-template-file, template, templatefile, jsonpath, jsonpath-as-json, jsonpath-file, custom-columns, custom-columns-file, wide). $ kubectl create tls NAME --cert=path/to/cert/file --key=path/to/key/file [--dry-run=server|client|none]. For this reason, it will not remove them. information. Defaults to the line ending native to your platform. This page shows how to create a Pod that uses a Secret to pull an image from a private container image registry or repository. Any other values should contain a corresponding time unit (e.g. the magnitude of any potential scale. Provided that you use the autoscaling/v2 API version, you can specify multiple metrics for a then during the first step 8 replicas will be reduced. For instance, different applications would use different values for the app label, but a multi-tier application, such as the guestbook example, would additionally need to distinguish each tier. fluctuating metric values. Note that kubectl apply attaches an annotation to the resource in order to determine the changes to the configuration since the previous invocation. The flag can be repeated to add multiple service accounts. Update pod 'foo' with the label 'unhealthy' and the value 'true', Update pod 'foo' with the label 'status' and the value 'unhealthy', overwriting any existing value, Update a pod identified by the type and name in "pod.json", Update pod 'foo' by removing a label named 'bar' if it exists # Does not require the --overwrite flag. Apply the configuration in pod.json to a pod, Apply resources from a directory containing kustomization.yaml - e.g. # Retrieve a base64 encoded value with dashes instead of underscores. To force delete a resource, you must specify the --force flag. suggest an improvement. The resource determines the behavior of the controller. When a targetAverageValue or targetAverageUtilization is specified, subdirectories, symlinks, devices, pipes, etc). It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. The example output is as follows. By default, the HorizontalPodAutoscaler controller retrieves metrics from a series of APIs. desired scale of its target (for example, a Deployment) to match observed metrics such as average When used with '--copy-to', a list of name=image pairs for changing container images, similar to how 'kubectl set image' works. See --as global flag. An inline JSON override for the generated object. Once you're confident, you can update the stable track to the new application release and remove the canary one. L'outil en ligne de commande de kubernetes, kubectl, vous permet d'excuter des commandes dans les clusters Kubernetes. The server only supports a limited number of field queries per type. Groups to bind to the clusterrole. Defaults to -1 with no selector, showing all log lines otherwise 10, if a selector is provided. Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. The DIR argument must be a path to a directory containing 'kustomization.yaml', or a git repository URL with a path suffix specifying same with respect to the repository root. For scaling down the stabilization window is 300 seconds (or the value of the Uses the transport specified by the kubeconfig file. Display clusters defined in the kubeconfig. List all supported resource types along with their shortnames, API group, whether they are namespaced, and Kind: Other operations for exploring API resources: To output details to your terminal window in a specific format, add the -o (or --output) flag to a supported kubectl command. If left empty, this value will not be specified by the client and defaulted by the server. The public/private key pair must exist beforehand. Ignored if negative. Must be one of, See the details, including podTemplate of the revision specified. Last modified September 07, 2022 at 2:02 PM PST: Installing Kubernetes with deployment tools, Customizing components with the kubeadm API, Creating Highly Available Clusters with kubeadm, Set up a High Availability etcd Cluster with kubeadm, Configuring each kubelet in your cluster using kubeadm, Communication between Nodes and the Control Plane, Guide for scheduling Windows containers in Kubernetes, Topology-aware traffic routing with topology keys, Resource Management for Pods and Containers, Organizing Cluster Access Using kubeconfig Files, Compute, Storage, and Networking Extensions, Changing the Container Runtime on a Node from Docker Engine to containerd, Migrate Docker Engine nodes from dockershim to cri-dockerd, Find Out What Container Runtime is Used on a Node, Troubleshooting CNI plugin-related errors, Check whether dockershim removal affects you, Migrating telemetry and security agents from dockershim, Configure Default Memory Requests and Limits for a Namespace, Configure Default CPU Requests and Limits for a Namespace, Configure Minimum and Maximum Memory Constraints for a Namespace, Configure Minimum and Maximum CPU Constraints for a Namespace, Configure Memory and CPU Quotas for a Namespace, Change the Reclaim Policy of a PersistentVolume, Control CPU Management Policies on the Node, Control Topology Management Policies on a node, Guaranteed Scheduling For Critical Add-On Pods, Migrate Replicated Control Plane To Use Cloud Controller Manager, Reconfigure a Node's Kubelet in a Live Cluster, Reserve Compute Resources for System Daemons, Running Kubernetes Node Components as a Non-root User, Using NodeLocal DNSCache in Kubernetes Clusters, Assign Memory Resources to Containers and Pods, Assign CPU Resources to Containers and Pods, Configure GMSA for Windows Pods and containers, Configure RunAsUserName for Windows pods and containers, Configure a Pod to Use a Volume for Storage, Configure a Pod to Use a PersistentVolume for Storage, Configure a Pod to Use a Projected Volume for Storage, Configure a Security Context for a Pod or Container, Configure Liveness, Readiness and Startup Probes, Attach Handlers to Container Lifecycle Events, Share Process Namespace between Containers in a Pod, Translate a Docker Compose File to Kubernetes Resources, Enforce Pod Security Standards by Configuring the Built-in Admission Controller, Enforce Pod Security Standards with Namespace Labels, Migrate from PodSecurityPolicy to the Built-In PodSecurity Admission Controller, Developing and debugging services locally using telepresence, Declarative Management of Kubernetes Objects Using Configuration Files, Declarative Management of Kubernetes Objects Using Kustomize, Managing Kubernetes Objects Using Imperative Commands, Imperative Management of Kubernetes Objects Using Configuration Files, Update API Objects in Place Using kubectl patch, Managing Secrets using Configuration File, Define a Command and Arguments for a Container, Define Environment Variables for a Container, Expose Pod Information to Containers Through Environment Variables, Expose Pod Information to Containers Through Files, Distribute Credentials Securely Using Secrets, Run a Stateless Application Using a Deployment, Run a Single-Instance Stateful Application, Specifying a Disruption Budget for your Application, Coarse Parallel Processing Using a Work Queue, Fine Parallel Processing Using a Work Queue, Indexed Job for Parallel Processing with Static Work Assignment, Handling retriable and non-retriable pod failures with Pod failure policy, Deploy and Access the Kubernetes Dashboard, Use Port Forwarding to Access Applications in a Cluster, Use a Service to Access an Application in a Cluster, Connect a Frontend to a Backend Using Services, List All Container Images Running in a Cluster, Set up Ingress on Minikube with the NGINX Ingress Controller, Communicate Between Containers in the Same Pod Using a Shared Volume, Extend the Kubernetes API with CustomResourceDefinitions, Use an HTTP Proxy to Access the Kubernetes API, Use a SOCKS5 Proxy to Access the Kubernetes API, Configure Certificate Rotation for the Kubelet, Adding entries to Pod /etc/hosts with HostAliases, Configure a kubelet image credential provider, Interactive Tutorial - Creating a Cluster, Interactive Tutorial - Exploring Your App, Externalizing config using MicroProfile, ConfigMaps and Secrets, Interactive Tutorial - Configuring a Java Microservice, Apply Pod Security Standards at the Cluster Level, Apply Pod Security Standards at the Namespace Level, Restrict a Container's Access to Resources with AppArmor, Restrict a Container's Syscalls with seccomp, Exposing an External IP Address to Access an Application in a Cluster, Example: Deploying PHP Guestbook application with Redis, Example: Deploying WordPress and MySQL with Persistent Volumes, Example: Deploying Cassandra with a StatefulSet, Running ZooKeeper, A Distributed System Coordinator, Mapping PodSecurityPolicies to Pod Security Standards, Well-Known Labels, Annotations and Taints, Kubernetes Security and Disclosure Information, Articles on dockershim Removal and on Using CRI-compatible Runtimes, Event Rate Limit Configuration (v1alpha1), kube-apiserver Encryption Configuration (v1), Contributing to the Upstream Kubernetes Code, Generating Reference Documentation for the Kubernetes API, Generating Reference Documentation for kubectl Commands, Generating Reference Pages for Kubernetes Components and Tools, the walkthrough for using external metrics, docs(HPA): typo "if it's unready and transitioned to unready" (8cab154c59), Example: change downscale stabilization window, Support for HorizontalPodAutoscaler in kubectl, Migrating Deployments and StatefulSets to horizontal autoscaling, If you would like to write your own custom metrics adapter, check out the. To edit using a specific API version, fully-qualify the resource, version, and group. It ensures that only a certain number of old replicas may be down while they are being updated, and only a certain number of new replicas may be created above the desired number of pods. $ kubectl edit (RESOURCE/NAME | -f FILENAME), Build some shared configuration directory. in the process of being shut down / removed) are ignored, and all failed Pods When creating applications, you may have a Docker registry that requires authentication. (@.type=="ExternalIP")].address}', # List Names of Pods that belong to Particular RC, # "jq" command useful for transformations that are too complex for jsonpath, it can be found at https://stedolan.github.io/jq/, '.spec.selector | to_entries | . Create a pod disruption budget with the specified name, selector, and desired minimum available pods. Create a LoadBalancer service with the specified name. flags-It describes optional flags.For using the command kubectl, scale DaemonSet pods up by adding a new node as shown in the example: $ kubectl label node 10.0.10.7 app=frontend-node node "10.0.10.7" labeled. Configure application resources. The kubectl scale command is used to immediately scale your application by adjusting the number of running containers. (@.name == "e2e")].user.password}', kubectl config use-context my-cluster-name, # set the default context to my-cluster-name, kubectl config set-cluster my-cluster-name, # configure the URL to a proxy server to use for requests made by this client in the kubeconfig, kubectl config set-cluster my-cluster-name --proxy-url, # add a new user to your kubeconf that supports basic auth, kubectl config set-credentials kubeuser/foo.kubernetes.com --username. For more information, please see kubectl edit document. due to an error fetching the metrics Allocate a TTY for the container in the pod. The benchmarks use default settings to reflect what most users will see. report a problem $ kubectl autoscale (-f FILENAME | TYPE NAME | TYPE/NAME) [--min=MINPODS] --max=MAXPODS [--cpu-percent=CPU], Create an interactive debugging session in pod mypod and immediately attach to it. behavior would be added to the HPA: To limit the rate at which pods are removed by the HPA to 10% per minute, the VERB is a logical Kubernetes API verb like 'get', 'list', 'watch', 'delete', etc. Namespace in current context is ignored even if specified with --namespace. calculated using the remaining pods not set aside or discarded from above. The field can be either 'cpu' or 'memory'. If you revise the target resource to have a new Pod specification with a different set of containers, You can It also describes how to upgrade an object from one version to another. Overwrite the default whitelist with for --prune. Note: If the context being renamed is the 'current-context', this field will also be updated. Create a copy of the target Pod with this name. By specifying the output as 'template' and providing a Go template as the value of the --template flag, you can filter the attributes of the fetched resources.Use "kubectl api-resources" for a complete list of supported resources. 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