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curl https://... | bash -s -- <clustername>
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#!/bin/sh | |
set -o errexit | |
# 1. Create registry container unless it already exists | |
reg_name='kind-registry' | |
reg_port='5001' | |
if [ "$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)" != 'true' ]; then | |
docker run \ | |
-d --restart=always -p "127.0.0.1:${reg_port}:5000" --name "${reg_name}" \ | |
registry:2 | |
fi | |
CLUSTERNAME="${1:-kind}" | |
# 2. Create kind cluster with containerd registry config dir enabled | |
# TODO: kind will eventually enable this by default and this patch will | |
# be unnecessary. | |
# | |
# See: | |
# https://github.com/kubernetes-sigs/kind/issues/2875 | |
# https://github.com/containerd/containerd/blob/main/docs/cri/config.md#registry-configuration | |
# See: https://github.com/containerd/containerd/blob/main/docs/hosts.md | |
cat <<EOF | kind create cluster --name $CLUSTERNAME --kubeconfig=~/.kube/$CLUSTERNAME --config=- | |
kind: Cluster | |
apiVersion: kind.x-k8s.io/v1alpha4 | |
containerdConfigPatches: | |
- |- | |
[plugins."io.containerd.grpc.v1.cri".registry] | |
config_path = "/etc/containerd/certs.d" | |
EOF | |
# 3. Add the registry config to the nodes | |
# | |
# This is necessary because localhost resolves to loopback addresses that are | |
# network-namespace local. | |
# In other words: localhost in the container is not localhost on the host. | |
# | |
# We want a consistent name that works from both ends, so we tell containerd to | |
# alias localhost:${reg_port} to the registry container when pulling images | |
REGISTRY_DIR="/etc/containerd/certs.d/localhost:${reg_port}" | |
for node in $(kind get nodes); do | |
docker exec "${node}" mkdir -p "${REGISTRY_DIR}" | |
cat <<EOF | docker exec -i "${node}" cp /dev/stdin "${REGISTRY_DIR}/hosts.toml" | |
[host."http://${reg_name}:5000"] | |
EOF | |
done | |
# 4. Connect the registry to the cluster network if not already connected | |
# This allows kind to bootstrap the network but ensures they're on the same network | |
if [ "$(docker inspect -f='{{json .NetworkSettings.Networks.kind}}' "${reg_name}")" = 'null' ]; then | |
docker network connect "kind" "${reg_name}" | |
fi | |
# 5. Document the local registry | |
# https://github.com/kubernetes/enhancements/tree/master/keps/sig-cluster-lifecycle/generic/1755-communicating-a-local-registry | |
cat <<EOF | kubectl apply -f - | |
apiVersion: v1 | |
kind: ConfigMap | |
metadata: | |
name: local-registry-hosting | |
namespace: kube-public | |
data: | |
localRegistryHosting.v1: | | |
host: "localhost:${reg_port}" | |
help: "https://kind.sigs.k8s.io/docs/user/local-registry/" | |
EOF |
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