Created
January 22, 2022 15:21
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Local test kind cluster with registry
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#!/bin/bash | |
set -o errexit | |
create() { | |
set +e | |
kind get clusters | grep "${NAME}" | |
exitCode=$? | |
set -e | |
if [ $exitCode -eq "0" ]; then | |
echo "kind cluster already exists" | |
kubectl config use-context "kind-${NAME}" | |
exit 0 | |
fi | |
# create registry container unless it already exists | |
reg_name='kind-registry' | |
reg_port='5000' | |
running="$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)" | |
if [ "${running}" != 'true' ]; then | |
docker run \ | |
-d --restart=always -p "127.0.0.1:${reg_port}:5000" --name "${reg_name}" \ | |
registry:2 | |
fi | |
# create a cluster with the local registry enabled in containerd | |
cat <<EOF | kind create cluster --wait 2m0s --name ${NAME} --config=- | |
kind: Cluster | |
apiVersion: kind.x-k8s.io/v1alpha4 | |
containerdConfigPatches: | |
- |- | |
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:${reg_port}"] | |
endpoint = ["http://${reg_name}:${reg_port}"] | |
EOF | |
# connect the registry to the cluster network | |
# (the network may already be connected) | |
docker network connect "kind" "${reg_name}" || true | |
# Document the local registry | |
# https://github.com/kubernetes/enhancements/tree/master/keps/sig-cluster-lifecycle/generic/1755-communicating-a-local-registry | |
cat <<EOF | kubectl apply -f - | |
apiVersion: v1 | |
kind: ConfigMap | |
metadata: | |
name: local-registry-hosting | |
namespace: kube-public | |
data: | |
localRegistryHosting.v1: | | |
host: "localhost:${reg_port}" | |
help: "https://kind.sigs.k8s.io/docs/user/local-registry/" | |
EOF | |
} | |
delete() { | |
kind delete cluster --name "${NAME}" | |
} | |
usage() { echo "Usage: $0 [-h help] [-a <delete|[create]>] [-n <kind-test>]" 1>&2; exit 1; } | |
NAME="kind-test" | |
ACTION="create" | |
while getopts ":a:n:h" o; do | |
case "${o}" in | |
a) | |
ACTION="${OPTARG}" | |
;; | |
n) | |
NAME="${OPTARG}" | |
;; | |
h) | |
usage | |
exit 0 | |
;; | |
*) | |
echo "Invalid flag ${OPTARG};" | |
usage | |
exit 1 | |
esac | |
done | |
shift $((OPTIND-1)) | |
if [[ "${ACTION}" == "create" ]]; then | |
create | |
elif [[ "${ACTION}" == "delete" ]]; then | |
delete | |
fi |
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