Let's say something like this is being returned.

error: Missing or incomplete configuration info.  Please point to an existing, complete config file:

  1. Via the command-line flag --kubeconfig
  2. Via the KUBECONFIG environment variable
  3. In your home directory as ~/.kube/config

To view or setup config directly use the 'config' command.

This typically occurs when attempting to log into OpenShift. The error suggests that your /home/username/.kube/config file is missing or incomplete. 

If the /home/your_username/.kube/config file does not exist, it will be created after the first successful log in.

oc login --username john.doe api.openshift.example.com:6443

Here is an example of what your /home/username/.kube/config file might look like.

apiVersion: v1
clusters:
- cluster:
    server: https://api.openshift.example.com:6443
  name: os.example.com:6443
contexts:
- context:
    cluster: api.openshift.example.com:6443
    namespace: default
    user: john.doe
  name: default/api.openshift.example.com:6443/john.doe
current-context: default/api.openshift.example.com:6443/john.doe
kind: Config
preferences: {}
users:
- name: john.doe
  user:
    token: Mn8cvscRkYgEUo_DcoUHUk3Z7Cu8W2RQikRBwmglet8

As the error suggests, one option is to use the --kubeconfig option.

oc login api.openshift.example.com:6443 --kubeconfig /home/john.doe/.kube/config

Or you could use the export command to set the KUBECONFIG environment variable. Or you could add this command to /home/username/.bash_profile to make this a permanent environment variable.

export KUBECONFIG=/home/username/.kube/config