Click on Back to Dashboard, or the Jenkins link in the top-left corner. Back on the main dashboard page, click on the Credentials link. Choose a domain from the list; in my case, I just used the default global credentials domain. Click on Add Credentials, and you'll be presented with the following screen:
The Add Credentials screen
Leave Kind as Username with password and Scope as Global (Jenkins, nodes, items, all child items, etc). Add your Kubernetes admin credentials. Remember that you can find these by running the following config command:
$ kubectl config view
You can leave ID blank, fill in Description ...
