Select Kubernetes context with peco

peco-kubectx

#!/bin/bash

PECO_CMD="peco"
KUBECTL_CMD="kubectl"

if ! hash "${PECO_CMD}" 2> /dev/null; then
  >&2 echo "error: ${PECO_CMD} is not installed"
  >&2 echo "see https://github.com/peco/peco"
  exit 1
fi

if ! hash "${KUBECTL_CMD}" 2> /dev/null; then
  >&2 echo "error: ${KUBECTL_CMD} is not installed"
  >&2 echo "see https://kubernetes.io/docs/tasks/tools/install-kubectl/"
  exit 1
fi

_current_kube_context=$("${KUBECTL_CMD}" config current-context)
_selected_kube_context=$(
  "${KUBECTL_CMD}" config get-contexts -o name \
  | sort \
  | awk "{ if (\$1 == \"${_current_kube_context}\") { print \"[*] \" \$1 } else { print \"[ ] \" \$1 } }" \
  | "${PECO_CMD}" \
  | awk '{ print $NF }'
)

if [ ! -z "${_selected_kube_context}" ]; then
  "${KUBECTL_CMD}" config use-context "${_selected_kube_context}"
  exit $?
fi