Run kind cluster with access to local registry

cluster-23.sh

#!/usr/bin/env bash

# A helper for kind to create and delete clusters with untrusted local registry.
# Based on https://kind.sigs.k8s.io/docs/user/local-registry/
#
# Note: kind 0.17.0

set -Eeo pipefail

# Settings for kind cluster
CLUSTER_NAME="kube-23"
KIND_NODE_IMAGE="kindest/node:v1.23.13@sha256:ef453bb7c79f0e3caba88d2067d4196f427794086a7d0df8df4f019d5e336b61"

# Container's name for registry
REGISTRY_NAME="registry2"
# A port to be used in repositories, e.g. "localhost:5000"
REGISTRY_PORT="5000"
# A path where blobs will be located.
REGISTRY_STORAGE_PATH=$HOME/registry


# !!! DO NOT EDIT BELOW !!!

function create() {
  # Check registry: create registry container unless it already exists.
  echo Check local registry ...
  regRunning="$(docker inspect -f '{{.State.Running}}' "${REGISTRY_NAME}" 2>/dev/null || true)"
  if [ "${regRunning}" == 'true' ]; then
    echo -e " \033[32m✓\033[0m Registry is running 🎁"
  else
    echo -e " \033[31m✗\033[0m No registry running, start ..."
    mkdir -p ${REGISTRY_STORAGE_PATH}
    docker run \
      --detach \
      --restart always \
      --publish "${REGISTRY_PORT}:5000" \
      --name "${REGISTRY_NAME}" \
      --volume ${REGISTRY_STORAGE_PATH}:/var/lib/registry \
      --env REGISTRY_STORAGE_DELETE_ENABLED=true \
      registry:2
    echo -e " \033[32m✓\033[0m Registry started 🎁"
  fi

  # Create cluster with kind.
  kindCfg=$(cat <<EOF
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
containerdConfigPatches:
- |-
  [plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:${REGISTRY_PORT}"]
      endpoint = ["http://${REGISTRY_NAME}:5000"]
networking:
  ipFamily: ipv4
nodes:
  - role: control-plane
  - role: worker
EOF
)
  if ! kind create cluster --name $CLUSTER_NAME --image $KIND_NODE_IMAGE --config=- <<<"${kindCfg}" ; then
    echo "kind create cluster failed"
    exit 1
  fi

  echo " 🔗 Connect registry container to docker network 'kind'"
  docker network connect "kind" "${REGISTRY_NAME}" 2>&1 | grep -v "already exist" || true
}

function delete() {
  echo " 👋 Will delete these containers:"
  docker ps --filter 'label=io.x-k8s.kind.cluster='$CLUSTER_NAME || true
  kind delete cluster --name $CLUSTER_NAME
}

function status() {
  docker ps --filter 'label=io.x-k8s.kind.cluster='$CLUSTER_NAME || true
  kubectl cluster-info --context=kind-$CLUSTER_NAME || true
}


function main() {
  echo $1
  if [[ $cmd == "start" ]] ; then
    echo "Use 'create' command instead of 'start'"
    cmd="create"
  fi
  if [[ $cmd == "stop" ]] ; then
    read -p "'stop' will destroy a cluster. Continue? [Enter] → Yes, [Ctrl+C] → No."
    cmd="delete"
  fi
  for cmd in create delete status ; do
    if [ "$1" == "$cmd" ]; then
      $cmd
      return $?
    fi
  done
  # unknown command
  cat <<EOF
Usage:
    $0 create|delete|status
EOF
  return 1
}

main $@