This task shows you how to debug a StatefulSet. Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. You should have a StatefulSet running that you want to investigate. Debugging a StatefulSet In order to list all the pods which belong to a StatefulSet, which have a label app.kubernetes.io/name=MyApp set on them, you can use the following:

This page shows how to use an HTTP proxy to access the Kubernetes API. Before you begin You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:

Learn how to troubleshoot Kubernetes applications using kubectl get, kubectl describe, kubectl logs and kubectl exec.

Synopsis Diff configurations specified by file name or stdin between the current online configuration, and the configuration as it would be if applied. The output is always YAML. KUBECTL_EXTERNAL_DIFF environment variable can be used to select your own diff command. Users can use external commands with params too, example: KUBECTL_EXTERNAL_DIFF="colordiff -N -u" By default, the "diff" command available in your path will be run with the "-u" (unified diff) and "-N" (treat absent files as empty) options.

Synopsis Drain node in preparation for maintenance. The given node will be marked unschedulable to prevent new pods from arriving. 'drain' evicts the pods if the API server supports https://kubernetes.io/docs/concepts/workloads/pods/disruptions/ eviction https://kubernetes.io/docs/concepts/workloads/pods/disruptions/ . Otherwise, it will use normal DELETE to delete the pods. The 'drain' evicts or deletes all pods except mirror pods (which cannot be deleted through the API server). If there are daemon set-managed pods, drain will not proceed without --ignore-daemonsets, and regardless it will not delete any daemon set-managed pods, because those pods would be immediately replaced by the daemon set controller, which ignores unschedulable markings.

Synopsis Create a new secret for use with Docker registries. Dockercfg secrets are used to authenticate against Docker registries. When using the Docker command line to push images, you can authenticate to a given registry by running: '$ docker login DOCKER_REGISTRY_SERVER --username=DOCKER_USER --password=DOCKER_PASSWORD --email=DOCKER_EMAIL'. That produces a ~/.dockercfg file that is used by subsequent 'docker push' and 'docker pull' commands to authenticate to the registry. The email address is optional.

Synopsis Create a job with the specified name. kubectl create job NAME --image=image [--from=cronjob/name] -- [COMMAND] [args...] Examples # Create a job kubectl create job my-job --image=busybox # Create a job with a command kubectl create job my-job --image=busybox -- date # Create a job from a cron job named "a-cronjob" kubectl create job test-job --from=cronjob/a-cronjob Options --allow-missing-template-keys     Default: true If true, ignore any errors in templates when a field or map key is missing in the template.

Synopsis Delete resources by file names, stdin, resources and names, or by resources and label selector. JSON and YAML formats are accepted. Only one type of argument may be specified: file names, resources and names, or resources and label selector. Some resources, such as pods, support graceful deletion. These resources define a default period before they are forcibly terminated (the grace period) but you may override that value with the --grace-period flag, or pass --now to set a grace-period of 1.

Synopsis Create a TLS secret from the given public/private key pair. The public/private key pair must exist beforehand. The public key certificate must be .PEM encoded and match the given private key. kubectl create secret tls NAME --cert=path/to/cert/file --key=path/to/key/file [--dry-run=server|client|none] Examples # Create a new TLS secret named tls-secret with the given key pair kubectl create secret tls tls-secret --cert=path/to/tls.crt --key=path/to/tls.key Options --allow-missing-template-keys     Default: true If true, ignore any errors in templates when a field or map key is missing in the template.

Synopsis Manage the rollout of one or many resources. Valid resource types include: deployments daemonsets statefulsets kubectl rollout SUBCOMMAND Examples # Rollback to the previous deployment kubectl rollout undo deployment/abc # Check the rollout status of a daemonset kubectl rollout status daemonset/foo # Restart a deployment kubectl rollout restart deployment/abc # Restart deployments with the 'app=nginx' label kubectl rollout restart deployment --selector=app=nginx Options -h, --help help for rollout --as string Username to impersonate for the operation.