resortopf.blogg.se - Docker for mac beta proxy

Us.gcr.io/k8s-artifacts-prod/cluster-api/kubeadm-bootstrap-controller v0.3.0 19.6MB Us.gcr.io/k8s-artifacts-prod/cluster-api/cluster-api-controller v0.3.0 20.3MB

Us.gcr.io/k8s-staging-capi-docker/capd-manager/capd-manager-amd64 dev 53.5MB Quay.io/jetstack/cert-manager-webhook v0.11.0 14.3MB Quay.io/jetstack/cert-manager-controller v0.11.0 14MB Quay.io/jetstack/cert-manager-cainjector v0.11.0 11.1MB % docker exec -it kind-control-plane crictl images # That's the cluster created using 'kind create cluster' Just take a look at all the images that get re-downloaded: Whenever I re-create a Kind cluster and try to install ClusterAPI, all the (quite heavy) images have to be re-downloaded.

Improving the ClusterAPI docker provider to use a given network.

Check that the caching proxy registry works.

Creating a Kind cluster that knows about this caching proxy registry.

In this post, I detail my discoveries around local registries and why the default Docker network is a trap. Even worse: when deleting and re-creating a cluster, all the downloaded images disappear. One thing I hate about Kind is that images are not cached between two Kind containers.

It is perfect for Kubernetes developers or anyone who wants to play with controllers. Kind is an awesome tool that allows you to spin up local Kubernetes clusters locally in seconds.

If you play with ClusterAPI with its Docker provider, you might not be able to use a local registry due to the clusters being created on the default network, which means the “proxy” hostname won’t be resolved (but we could work around that). The Docker default network ( bridge) has limitations as detailed by Docker. KIND_EXPERIMENTAL_DOCKER_NETWORK is useful but remember that the default network ( bridge) doesn’t have DNS resolution for container hostnames In case you often create & delete Kind clusters, using a local registry that serves as a proxy avoids redundant downloads Kind create cluster -config /dev/stdin <