MicroK8s : Enable Registry2023/04/27

To enable MicroK8s built-in Registry, Configure like follows.

[1]	Enable built-in Registry on primary Node. After enabling, [kube-proxy] listens on [0.0.0.0:32000].

# enable registry with backend storage size 30G
# default size is 20G if it's not specified
# possible to specify the size on MicroK8s 1.18.3 or later

root@dlp:~#

microk8s enable registry:size=30Gi

Infer repository core for addon registry
Infer repository core for addon hostpath-storage
Enabling default storage class.
WARNING: Hostpath storage is not suitable for production environments.

deployment.apps/hostpath-provisioner created
storageclass.storage.k8s.io/microk8s-hostpath created
serviceaccount/microk8s-hostpath created
clusterrole.rbac.authorization.k8s.io/microk8s-hostpath created
clusterrolebinding.rbac.authorization.k8s.io/microk8s-hostpath created
Storage will be available soon.
WARNING: This style of specifying size is deprecated. Use newer --size argument instead.
The registry will be created with the size of 30Gi.
Default storage class will be used.
namespace/container-registry created
persistentvolumeclaim/registry-claim created
deployment.apps/registry created
service/registry created
configmap/local-registry-hosting configured

# [registry] pod starts

root@dlp:~#

microk8s kubectl get pods -n container-registry

NAME                        READY   STATUS    RESTARTS   AGE
registry-77c7575667-nd6md   1/1     Running   0          38s

[2]	After enabling Registry, it's possible to use it with common operation.

root@dlp:~#

podman images

REPOSITORY                TAG         IMAGE ID      CREATED      SIZE
docker.io/library/ubuntu  latest      08d22c0ceb15  7 weeks ago  80.3 MB

# tag and push

root@dlp:~#

podman tag 08d22c0ceb15 localhost:32000/ubuntu:registry

root@dlp:~#

podman push localhost:32000/ubuntu:registry --tls-verify=false

Getting image source signatures
Copying blob b93c1bd012ab done
Copying config 08d22c0ceb done
Writing manifest to image destination
Storing signatures

root@dlp:~#

podman images

REPOSITORY                TAG         IMAGE ID      CREATED      SIZE
docker.io/library/ubuntu  latest      08d22c0ceb15  7 weeks ago  80.3 MB
localhost:32000/ubuntu    registry    08d22c0ceb15  7 weeks ago  80.3 MB

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