MicroK8s : Registry を有効にする2024/06/14

	MicroK8s ビルトインの Registry を有効にする場合は以下のように設定します。
[1]	プライマリーノードで、ビルトイン Registry を有効にします。有効にすると、[kube-proxy] が [0.0.0.0:32000] で待ち受け状態となります。

# バックエンドストレージサイズ 30G で registry を有効にする
# サイズ指定しない場合のデフォルトは 20G

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.
         A hostpath volume can grow beyond the size limit set in the volume claim manifest.

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 が起動する

root@dlp:~#

microk8s kubectl get pods -n container-registry

NAME                        READY   STATUS    RESTARTS   AGE
registry-6c9fcc695f-fr5br   1/1     Running   0          65s

[2]	Registry 有効後は、通常通りの方法で使用可能です。

root@dlp:~#

podman images

REPOSITORY                TAG         IMAGE ID      CREATED      SIZE
docker.io/library/ubuntu  latest      17c0145030df  2 weeks ago  78.7 MB

# タグ付けしてプッシュ

root@dlp:~#

podman tag 17c0145030df localhost:32000/ubuntu:registry

root@dlp:~#

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

Getting image source signatures
Copying blob 42d3f8788282 done   |
Copying config 17c0145030 done   |
Writing manifest to image destination

root@dlp:~#

podman images

REPOSITORY                TAG         IMAGE ID      CREATED      SIZE
localhost:32000/ubuntu    registry    17c0145030df  2 weeks ago  78.7 MB
docker.io/library/ubuntu  latest      17c0145030df  2 weeks ago  78.7 MB