When several users or teams share a cluster with a fixed number of nodes, there is a concern that one team could use more than its fair share of resources. Resource quotas are a tool for administrators to address this concern. A resource quota, defined by a ResourceQuota object, provides constraints that limit aggregate resource consumption per namespace. It can limit the quantity of objects that can be created in a namespace by type, as well as the total amount of compute resources that may be consumed by resources in that namespace.

This document describes projected volumes in Kubernetes. Familiarity with volumes is suggested. Introduction A projected volume maps several existing volume sources into the same directory. Currently, the following types of volume sources can be projected: secret downwardAPI configMap serviceAccountToken clusterTrustBundle All sources are required to be in the same namespace as the Pod. For more details, see the all-in-one volume design document. Example configuration with a secret, a downwardAPI, and a configMap pods/storage/projected-secret-downwardapi-configmap.

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Synopsis Create a cluster role. kubectl create clusterrole NAME --verb=verb --resource=resource.group [--resource-name=resourcename] [--dry-run=server|client|none] Examples # Create a cluster role named "pod-reader" that allows user to perform "get", "watch" and "list" on pods kubectl create clusterrole pod-reader --verb=get,list,watch --resource=pods # Create a cluster role named "pod-reader" with ResourceName specified kubectl create clusterrole pod-reader --verb=get --resource=pods --resource-name=readablepod --resource-name=anotherpod # Create a cluster role named "foo" with API Group specified kubectl create clusterrole foo --verb=get,list,watch --resource=rs.

Synopsis View the latest last-applied-configuration annotations by type/name or file. The default output will be printed to stdout in YAML format. You can use the -o option to change the output format. kubectl apply view-last-applied (TYPE [NAME | -l label] | TYPE/NAME | -f FILENAME) Examples # View the last-applied-configuration annotations by type/name in YAML kubectl apply view-last-applied deployment/nginx # View the last-applied-configuration annotations by file in JSON kubectl apply view-last-applied -f deploy.

kubectl reference kubectl kubectl annotate kubectl api-resources kubectl api-versions kubectl apply kubectl attach ku...

This section of the Kubernetes documentation provides reference details of Kubernetes networking.

Synopsis Display addresses of the control plane and services with label kubernetes.io/cluster-service=true. To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. kubectl cluster-info [flags] Examples # Print the address of the control plane and cluster services kubectl cluster-info Options -h, --help help for cluster-info --as string Username to impersonate for the operation. User could be a regular user or a service account in a namespace. --as-group strings Group to impersonate for the operation, this flag can be repeated to specify multiple groups.

In v1.15.0, kubeadm introduced preliminary support for kubeadm upgrade node phases. Phases for other kubeadm upgrade sub-commands such as apply, could be added in the following releases. kubeadm upgrade node phase Using this phase you can choose to execute the separate steps of the upgrade of secondary control-plane or worker nodes. Please note that kubeadm upgrade apply still has to be called on a primary control-plane node. phase preflight control-plane kubelet-config Use this command to invoke single phase of the node workflow

Synopsis Dump cluster information out suitable for debugging and diagnosing cluster problems. By default, dumps everything to stdout. You can optionally specify a directory with --output-directory. If you specify a directory, Kubernetes will build a set of files in that directory. By default, only dumps things in the current namespace and 'kube-system' namespace, but you can switch to a different namespace with the --namespaces flag, or specify --all-namespaces to dump all namespaces.