Deploy an App Using kubectl to Create a Deployment Learn about application Deployments. Deploy your first app on Kube...

Perform a rolling update using kubectl.

Once you connected your Application with Service following steps like those outlined in Connecting Applications with Services, you have a continuously running, replicated application, that is exposed on a network. This tutorial helps you look at the termination flow for Pods and to explore ways to implement graceful connection draining. Termination process for Pods and their endpoints There are often cases when you need to terminate a Pod - be it for upgrade or scale down.

kubeadm init phase enables you to invoke atomic steps of the bootstrap process. Hence, you can let kubeadm do some of the work and you can fill in the gaps if you wish to apply customization. kubeadm init phase is consistent with the kubeadm init workflow, and behind the scene both use the same code. kubeadm init phase preflight Using this command you can execute preflight checks on a control-plane node.

Synopsis Display merged kubeconfig settings or a specified kubeconfig file. You can use --output jsonpath={...} to extract specific values using a jsonpath expression. kubectl config view [flags] Examples # Show merged kubeconfig settings kubectl config view # Show merged kubeconfig settings, raw certificate data, and exposed secrets kubectl config view --raw # Get the password for the e2e user kubectl config view -o jsonpath='{.users[?(@.name == "e2e")].user.password}' 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 Check whether an action is allowed. VERB is a logical Kubernetes API verb like 'get', 'list', 'watch', 'delete', etc. TYPE is a Kubernetes resource. Shortcuts and groups will be resolved. NONRESOURCEURL is a partial URL that starts with "/". NAME is the name of a particular Kubernetes resource. This command pairs nicely with impersonation. See --as global flag. kubectl auth can-i VERB [TYPE | TYPE/NAME | NONRESOURCEURL] Examples # Check to see if I can create pods in any namespace kubectl auth can-i create pods --all-namespaces # Check to see if I can list deployments in my current namespace kubectl auth can-i list deployments.

Synopsis Replace a resource by file name or stdin. JSON and YAML formats are accepted. If replacing an existing resource, the complete resource spec must be provided. This can be obtained by $ kubectl get TYPE NAME -o yaml kubectl replace -f FILENAME Examples # Replace a pod using the data in pod.json kubectl replace -f ./pod.json # Replace a pod based on the JSON passed into stdin cat pod.

Synopsis The Kubernetes API server validates and configures data for the api objects which include pods, services, replicationcontrollers, and others. The API Server services REST operations and provides the frontend to the cluster's shared state through which all other components interact. kube-apiserver [flags] Options --admission-control-config-file string File with admission control configuration. --advertise-address string The IP address on which to advertise the apiserver to members of the cluster. This address must be reachable by the rest of the cluster.

Package v1 is the v1 version of the API. Resource Types WebhookAdmission WebhookAdmission WebhookAdmission provides configuration for the webhook admission controller. FieldDescription apiVersionstringapiserver.config.k8s.io/v1 kindstringWebhookAdmission kubeConfigFile [Required] string KubeConfigFile is the path to the kubeconfig file.

Synopsis Create a config map based on a file, directory, or specified literal value. A single config map may package one or more key/value pairs. When creating a config map based on a file, the key will default to the basename of the file, and the value will default to the file content. If the basename is an invalid key, you may specify an alternate key. 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.