From the terminal use kubectl to see the list of all available contexts (which also shows clusters):

kubctl config get-contexts

The launch k9s either simply, or by specifying a context:

k9s --context some-context

One can always use the k9s program (set up and used as advised here). Alternatively it is possible to directly open a shell into, or transfer files from a pod using the following incantations from one's own shell:

• to retrieve pod names

kubectl get pods --context=cognitor-aks --namespace=cognitera-platform

• to open a shell into a pod (identified by name)

kubectl exec -it --context=cognitor-aks --namespace=<namespace> pod/<pod name> -- bash

• retrieve from or transfer files to a pod

kubectl cp --context=cognitor-aks --namespace=<namespace> ./local-file.txt <pod name>:/tmp/remote-file.txt

• setup port forwarding with local machine

kubectl port-forward --context=hetzner-staging --namespace=cognitera-platform svc/postgresql 35001:5432