The kubectl command line client is a versatile way to interact with a Kubernetes cluster, including managing multiple clusters. I’ve not found a good way to login to multiple Kubernetes clusters (well, actually I have: using the OpenShift oc command-line client, which has a login command which basically automates all of the below) out of the box, so here’s a quick intro to the kubectl command-line config commands that let us configure our different cluster credentials, users, and namespaces to quickly switch between clusters or namespaces within a cluster:
