Selected namespace for the current context:
kubectl config get-contexts
The context relates to your login to the cluster.
You can switch to a different namespace:
kubectl config set-context --current --namespace test-app-dev
List all pods in namespace:
kubectl get pods
List containers running in a pod:
kubectl get pods test-app-dev-import-cronjob-28594500-54jj2 -o jsonpath='{.spec.containers[*].name}'
Show logs from the docker container (test-app-import-cron) running in the pod:
kubectl logs -c test-app-dev-import-cron test-app-dev-import-cronjob-28594500-54jj2