Container Registry:Replicate images within the same account

Automatic replication within the same account

A replication rule automatically replicates container images to a destination instance in the same account whenever a new image is pushed to the source instance.

To replicate existing images, use one of the following approaches:

• For a small number of existing images, you can replicate them manually. For more information, see Manual replication within the same account and CreateRepoSyncTask.

• For a large number of existing images, we recommend using the OSS replication and ACR image import method:

  1. Copy all files from the OSS bucket of the source instance to the OSS bucket of the destination instance. For more information, see Data replication.

  2. Create an import rule with the migration source set to an OSS bucket. Then, start the image import task to migrate the images.

1. Log on to the Container Registry console.

2. In the top navigation bar, select a region.

3. In the left-side navigation pane, click Instances.

4. On the Instances page, click the Enterprise Edition instance that you want to manage.

5. In the left-side navigation pane, choose Distribution > Instance Replication. Then, click Create Rule.

6. In the Create Rule dialog box's Instance configuration wizard, set the parameters, and then click Next.

   Parameter	Description
   Rule Name	Enter a name for the replication rule.
   Replication Scenario	Select Same Account.
   Destination Instance	Select the region and name of the destination instance. Note You can automatically replicate images across regions without exposing public endpoints. This mitigates security risks associated with public network access.

7. In the Create Rule dialog box, set the parameters in the Replication Information configuration wizard, and then click Create Rule.

   Parameter	Description
   Replication Level	You can replicate images at the namespace or repository level.
   Source Address	If you set Replication Level to Namespace, you must select a namespace and enter a regular expression to filter tags. If you set Replication Level to Repository, you must select a namespace and a repository, and enter a regular expression to filter tags.

   Pushing a new container image to a repository that matches the rule automatically triggers a replication task.

   To view replication tasks, choose Distribution > Replication Record in the left-side navigation pane.

Manual replication within the same account

You can manually replicate a specific container image from a source instance to a destination instance in the same account.

1. Log on to the Container Registry console.

2. In the top navigation bar, select a region.

3. In the left-side navigation pane, click Instances.

4. On the Instances page, click the Enterprise Edition instance that you want to manage.

5. In the left-side navigation pane of the management page of the Enterprise Edition instance, choose Repository > Repositories.

6. On the Repositories page, click the name of the target repository.

7. In the left-side navigation pane, click Image Version. Find the target tag and click Replication in the Actions column.

8. In the Sync dialog box, set Replication Scenario to Same Account. Then, select the destination instance's region and name, choose the destination namespace, and enter the repository name and tag. Finally, specify whether to overwrite an existing image with the same name and click Confirm.

   To verify the replication, choose Distribution > Replication Record. If the task status on the Replication Record page is Completed and you can find the replicated image in the destination instance, the manual replication is successful.