Kubernetes execute shell wrapper

_ksh

#compdef ksh
# command completion for zsh

typeset -A opt_args

_arguments -C \
          '1:pod:->pods' \
          '*:: :->args' \
    && ret=0

case "$state" in
    (pods)
        local pods; pods=(
            `kubectl get po --no-headers -o=custom-columns=Name:.metadata.name`
        )
        _describe -t pods 'pod' pods && ret=0
        ;;
    (args)
        local options; options=(
            '--namespace='
            '--container='
        )
        _describe -t options 'options' options && ret=0
        ;;
esac;

return 1

ksh

#!/bin/sh
COLUMNS=`tput cols`
LINES=`tput lines`
TERM=xterm
KUBE_SHELL=${KUBE_SHELL:-bash}

POD=$1
shift

kubectl exec -it $POD "$@" -- env COLUMNS=$COLUMNS LINES=$LINES TERM=$TERM "$KUBE_SHELL"