30-kubernetes.sh

# Kubectl auto-completion
if which kubectl &>/dev/null; then
    KUBECTL_COMPLETION_TMP=$(mktemp kubectl-completion-XXXXX)
    kubectl completion bash >${KUBECTL_COMPLETION_TMP}
    source ${KUBECTL_COMPLETION_TMP}
    rm ${KUBECTL_COMPLETION_TMP}
fi

# Alias and ensure completion works for the alias too
alias k='kubectl'
complete -F __start_kubectl k

# Editor for `kubectl edit`
if which subl &>/dev/null; then
    export KUBE_EDITOR="subl -w"
elif which vim &>/dev/null; then
    export KUBE_EDITOR="vim"
fi

# # Setup a bare-minimum, local port forwarding for a service
# k_portfw() {
#     if [ $# -ne 3 ]; then
#         echo "Usage: k_portfw <SERVICE NAME> <PORT ON LOCALHOST> <PORT ON CLUSTER>"
#     else
#         kubectl port-forward svc/$1 $2:$3
#     fi
# }

# # Force a service to re-deploy, if the change is not automatically picked up (ex. republished Docker image)
# k_kick() {
#     if [ $# -ne 1 ] && [ $# -ne 2 ]; then
#         echo "Usage: k_kick <SERVICE NAME> [NAMESPACE]"
#     else
#         local deployment=${1}
#         local namespace=${2:-default}

#         kubectl patch deployment ${deployment} -n ${namespace} -p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"$(date +'%s')\"}}}}}"
#     fi
# }

# # Manually triggers a CronJob instead of waiting for next execution
# k_cron_kick() {
#     if [ $# -ne 1 ]; then
#         echo "Usage: k_cron_kick <CRONJOB NAME>"
#     else
#         kubectl create job --from=cronjob/$1 $1-manual-$(date -u +%s)
#     fi
# }

# # Tunnel traffic toward IP/HOSTNAME private to the K8S cluster
# k_socat() {
#     (
#         set -euo pipefail

#         local HOSTNAME="$1"
#         local PORT="$2"
#         local LOCAL_PORT="$3"
#         local SANITIZED_HOSTNAME=$(echo "${HOSTNAME//[.]/-}" | tr '[:upper:]' '[:lower:]')
#         local TEMP_POD_NAME="socat-${USER}-${SANITIZED_HOSTNAME}-${PORT}-$(date +%s)"

#         echo "Creating a temporary pod to create a tunnel from ${HOSTNAME}:${PORT} to localhost:${LOCAL_PORT}..."

#         kubectl run --restart=Never --image=alpine/socat $TEMP_POD_NAME -- -d -d tcp-listen:$PORT,fork,reuseaddr tcp-connect:$HOSTNAME:$PORT
#         kubectl wait --for=condition=Ready pod/$TEMP_POD_NAME

#         echo
#         echo "Please delete the pod after you're done:"
#         echo
#         echo "    kubectl delete pod $TEMP_POD_NAME --grace-period 1 --wait=false"
#         echo

#         kubectl port-forward pod/$TEMP_POD_NAME $LOCAL_PORT:$PORT
#     )
# }

# Kubebuilder
# Based on: https://book.kubebuilder.io/quick-start.html#installation
if [[ -d "/usr/local/kubebuilder/bin" ]]; then
    export PATH=${PATH}:/usr/local/kubebuilder/bin
fi