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feat: added local registry support and improved setup (close #353)
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{{cookiecutter.project_slug}}/k8s/scripts/kind-with-registry.sh
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| #!/bin/sh | ||
| set -o errexit | ||
|
|
||
| # SCAF NOTE: | ||
| # This is a modified version of the script from the kind project. | ||
| # The original script can be found at: | ||
| # https://kind.sigs.k8s.io/docs/user/local-registry/ | ||
|
|
||
| # 1. Create registry container unless it already exists | ||
| cluster_name="$1" | ||
| reg_name="scaf-registry" | ||
| reg_port='5001' | ||
| if [ "$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)" != 'true' ]; then | ||
| docker run \ | ||
| -d --restart=always -p "${reg_port}:5000" --network bridge --name "${reg_name}" \ | ||
| registry:2 | ||
| fi | ||
|
|
||
| # 2. Create kind cluster with containerd registry config dir enabled | ||
| # TODO: kind will eventually enable this by default and this patch will | ||
| # be unnecessary. | ||
| # | ||
| # See: | ||
| # https://github.com/kubernetes-sigs/kind/issues/2875 | ||
| # https://github.com/containerd/containerd/blob/main/docs/cri/config.md#registry-configuration | ||
| # See: https://github.com/containerd/containerd/blob/main/docs/hosts.md | ||
| cat <<EOF | kind create cluster --name="$cluster_name" --config=- | ||
| kind: Cluster | ||
| apiVersion: kind.x-k8s.io/v1alpha4 | ||
| containerdConfigPatches: | ||
| - |- | ||
| [plugins."io.containerd.grpc.v1.cri".registry] | ||
| config_path = "/etc/containerd/certs.d" | ||
| EOF | ||
| echo "Context: $(kubectl config current-context)" | ||
| # 3. Add the registry config to the nodes | ||
| # | ||
| # This is necessary because localhost resolves to loopback addresses that are | ||
| # network-namespace local. | ||
| # In other words: localhost in the container is not localhost on the host. | ||
| # | ||
| # We want a consistent name that works from both ends, so we tell containerd to | ||
| # alias localhost:${reg_port} to the registry container when pulling images | ||
| REGISTRY_DIR="/etc/containerd/certs.d/localhost:${reg_port}" | ||
| for node in $(kind get nodes -n "${cluster_name}"); 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 | ||
|
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||
| # 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 |