役立つKubeconfigの例とkubectl configコマンド5選

5 Useful Kubeconfig Examples and kubectl config Commands - howtouselinux Skip to content No results we can use kubeconfig configuration file to store information about different clusters, users, namespaces, and authentication mechanisms. Table of Contents Toggle Understanding kubeconfig A context element in a kubeconfig file is used to group access parameters under a convenient name. Each context has three parameters: cluster, namespace, and user. By default, the kubectl command-line tool uses parameters from the current context to communicate with the cluster. Such configuration files are referred to as kubeconfig files. Note that kubeconfig is a generic way to refer to kubectl configuration files and that it is not the name of the config file. kubectl uses such files to store the information needed for us to choose a cluster and communicate with its API server. By default, kubectl looks for the file in the $HOME/.kube directory. In most scenarios, we can specify a KUBECONFIG environment variable or use the –kubeconfig flag to specify the kubeconfig files. Those files are usually saved in $HOME/.kube/config. If we are using kubectl, here’s the preference that takes effect while determining which kubeconfig file is used. use –kubeconfig flag, if specified use KUBECONFIG environment variable, if specified use $HOME/.kube/config file Show Merged kubeconfig settings kubectl config view We can use multiple kubeconfig files at the same time and view merged config KUBECONFIG=~/.kube/config:~/.kube/kubconfig2 See also: Mastering the Linux Command Line — Your Complete Free Training Guide kubectl config view Alternatively, we can also use the following command: cat $HOME/.kube/config Use kubectl config to Get the password for the e2e user kubectl config view -o jsonpath='{.users[?(@.name == “e2e”)].user.password}’ display the first user kubectl config view -o jsonpath='{.users[].name}’ get a list of users kubectl config view -o jsonpath='{.users[*].name}’ # Use kubectl config to Display list of contexts A context is a set of information that we need to access a cluster. It contains the name of the cluster, the user, and the namespace. display the current-context kubectl config current-context set the default context to my-cluster-name kubectl config use-context my-cluster-name Use kubectl config to add a new user kubectl config set-credentials kubeuser/foo.kubernetes.com –username=kubeuser –password=kubepassword permanently save the namespace for all subsequent kubectl commands in that context kubectl config set-context –current –namespace=ggckad-s2 set a context utilizing a specific username and namespace. kubectl config set-context gce –user=cluster-admin –namespace=foo && kubectl config use-context gce use kubectl config to delete user foo kubectl config unset users.foo kubectl config command kubectl – kubectl controls the Kubernetes cluster manager kubectl config current-context – Displays the current-context kubectl config set – Sets an individual value in a kubeconfig file kubectl config set-cluster – Sets a cluster entry in kubeconfig kubectl config set-context – Sets a context entry in kubeconfig kubectl config set-credentials – Sets a user entry in kubeconfig kubectl config unset – Unsets an individual value in a kubeconfig file kubectl config use-context – Sets the current-context in a kubeconfig file kubectl config view – isplays merged kubeconfig settings or a specified kubeconfig file. David Cao David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source. Articles: 275 Search Search Understanding the Linux Sticky Bit Permission How to Use fapolicyd in RHEL (Step-by-Step Guide) Netplan in Ubuntu: Modern Network Management Made Simple How To Use Pip Command in Linux Related Posts Understanding the Linux Sticky Bit Permission April 9, 2026 How to Use fapolicyd in RHEL (Step-by-Step Guide) April 5, 2026 Netplan in Ubuntu: Modern Network Management Made Simple March 31, 2026