Reversibility of the managed Container Registry

The managed Container Registry service is designed to guarantee reversibility, that is, the ability for the customer to retrieve their data and migrate to another solution without lock-in.

Exportable data

All container images and artifacts stored in the Container Registry can be exported using the standard tools of the OCI (Open Container Initiative) ecosystem.

Reversibility tools

Push to an external registry

Use the standard Docker commands to copy the images to an external registry:

docker pull <registry-url>/<project>/<image>:<tag>
docker tag <registry-url>/<project>/<image>:<tag> <new-registry>/<project>/<image>:<tag>
docker push <new-registry>/<project>/<image>:<tag>

Harbor replication

Harbor replication automatically replicates the images to an external registry.

Export via the Harbor API

The Harbor API (Application Programming Interface) lists the projects and the images to automate the export:

curl -u "admin:password" "https://<registry-url>/api/v2.0/projects"

Open formats

• container images use the OCI (Open Container Initiative) format, compatible with any compliant registry (Docker Registry, Quay, etc.);
• Helm charts use the standard Helm format, compatible with any Helm repository;
• the registry protocol is the Docker Registry HTTP API V2, an industry standard.

Exit procedure

1. Identify all the projects and images to migrate.
2. Configure the replication to the target registry or perform a manual push.
3. Verify the integrity of the images copied to the target registry.
4. Update the deployment configurations (registry URL).
5. Delete the Numspot Container Registry instance after validation.