One of the main things I missed going from RedHat Openshift to vanilla Kubernetes is the concept of switching projects. An Openshift project is simply a context associated with a particular namespace. However projects/namespaces can be switched and all subsequent commands will inherit that namespace scope. This saves me the trouble of attaching -n namespace to each and every command. I decided to write a quick and dirty ZSH plugin to take care of this by adding a kubectl project command.

1. Getting the current project.

   1 2 3

   kubectl project Current project: default Usage: kubectl project <namespace>

2. Getting the pods in the project

   1 2	kubectl get pods No resources found in default namespace.

3. Switching project

   1 2	kubectl project test Set current project to test

4. All subsequent commands inherit the project's namespace.

   1 2 3

   kubectl get pods NAME READY STATUS RESTARTS AGE test-fddbfcd5c-kjmvk 1/1 Running 1 13m

The plugin that can be added to your shell init.

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function _kcl() {
  if [[ -z "$1" && -z "$2" ]]; then
    \kubectl -n $KUBESPACE "$@"
    return 0
  fi
  if [[ ! -z "$1" && "$1" == "project" && -z "$2" ]]; then
      echo "Current project: $KUBESPACE"
      echo "Usage: $0 project <namespace>"
      return 1
  fi
  if [[ ! -z "$1"  && "$1" == "project" && ! -z $2 ]]; then
    export KUBESPACE="$2"
    echo "Set current project to $KUBESPACE"
    return 0
  else
    \kubectl -n $KUBESPACE "$@"
    return 0
  fi
}
alias kubectl='_kcl'