fix: update-kind-example-to-containerd_1.5

Signed-off-by: dmitrynovik <dmitry.novik@gmail.com>

Author: dmitrychilli

examples/local-kind-environment/scripts/kind-with-registry.sh

@@ -2,6 +2,8 @@
 set -o errexit
 
 # create registry container unless it already exists
+# http://kind-registry.local:5000
+# curl -s -X GET kind-registry.local:5000/v2/_catalog | jq .
 reg_name='kind-registry.local'
 reg_port='5000'
 if [ "$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)" != 'true' ]; then
@@ -16,10 +18,26 @@ kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
 containerdConfigPatches:
 - |-
-  [plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:${reg_port}"]
+  [plugins."io.containerd.grpc.v1.cri".registry.mirrors."${reg_name}:${reg_port}"]
     endpoint = ["http://${reg_name}:5000"]
 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:${reg_port} to the registry container when pulling images
+REGISTRY_DIR="/etc/containerd/certs.d/${reg_name}:${reg_port}"
+for node in $(sudo kind get nodes); do
+  sudo docker exec "${node}" mkdir -p "${REGISTRY_DIR}"
+  cat <<EOF | sudo docker exec -i "${node}" cp /dev/stdin "${REGISTRY_DIR}/hosts.toml"
+[host."http://${reg_name}:${reg_port}"]
+EOF
+done
+
 # connect the registry to the cluster network if not already connected
 if [ "$(docker inspect -f='{{json .NetworkSettings.Networks.kind}}' "${reg_name}")" = 'null' ]; then
   docker network connect "kind" "${reg_name}"