Kubernetes' command line interface (CLI), kubectl, can be used to run commands against a Kubernetes cluster. Because OpenShift Container Platform is a certified Kubernetes distribution, you can use the supported kubectl binaries that ship with OpenShift Dedicated, or you can gain extended functionality by using the oc binary.

The oc binary

The oc binary offers the same capabilities as the kubectl binary, but it extends to natively support additional OpenShift Dedicated features, including:

  • Full support for OpenShift Dedicated resources

    Resources such as DeploymentConfigs, BuildConfigs, Routes, ImageStreams, and ImageStreamTags are specific to OpenShift Dedicated distributions, and build upon standard Kubernetes primitives.

  • Authentication

    The oc binary offers a built-in login command that allows authentication and enables you to work with OpenShift Dedicated projects, which map Kubernetes namespaces to authenticated users. See Understanding authentication for more information.

  • Additional commands

    The additional command oc new-app, for example, makes it easier to get new applications started using existing source code or pre-built images. Similarly, the additional command oc new-project makes it easier to start a project that you can switch to as your default.

The kubectl binary

The kubectl binary is provided as a means to support existing workflows and scripts for new OpenShift Dedicated users coming from a standard Kubernetes environment, or for those who prefer to use the kubectl CLI. Existing users of kubectl can continue to use the binary to interact with Kubernetes primitives, with no changes required to the OpenShift Dedicated cluster.

You can install the supported kubectl binary by following the steps to Install the CLI. The kubectl binary is included in the archive if you download the binary, or is installed when you install the CLI by using an RPM.

For more information, see the kubectl documentation.