Chapter 5. Populating your private automation hub container registry
By default, private automation hub does not include container images. To populate your container registry, you must push a container image to it.
You must follow a specific workflow to populate your private automation hub container registry:
- Pull images from the Red Hat Ecosystem Catalog (registry.redhat.io)
- Tag them
- Push them to your private automation hub container registry
Image manifests and filesystem blobs were both originally served directly from registry.redhat.io and registry.access.redhat.com. As of 1 May 2023, filesystem blobs are served from quay.io instead.
- Ensure that the Network ports and protocols listed in Table 5.10. Execution Environments (EE) are available to avoid problems pulling container images.
Make this change to any firewall configuration that specifically enables outbound connections to registry.redhat.io or registry.access.redhat.com.
Use the hostnames instead of IP addresses when configuring firewall rules.
After making this change you can continue to pull images from registry.redhat.io and registry.access.redhat.com. You do not require a quay.io login, or need to interact with the quay.io registry directly in any way to continue pulling Red Hat container images.
However, manifests, sometimes called “subscription allocations”, on the web-based Red Hat Subscription Management are no longer supported as of early 2024 with one exception: If a system is part of a closed network or “air gapped” system that does not receive its updates from Red Hat’s servers directly, manifests are supported until the release of Red Hat Satellite 6.16. Keep up to date with Red Hat Satellite Release Dates for the announcement for Red Hat Satellite 6.16’s release date announcement.
5.1. Pulling images for use in automation hub
Before you can push container images to your private automation hub, you must first pull them from an existing registry and tag them for use. The following example details how to pull an image from the Red Hat Ecosystem Catalog (registry.redhat.io).
As of early 2024, Red Hat no longer supports manifests or manifest lists on the Red Hat Subscription Management web platform, which has also been used interchangeably with “subscription allocations.” Red Hat also no longer supports most manifest functionality in Red Hat Satellite with one exception: * Red Hat Satellite users in closed network or “air gapped” networks that do not receive their updates directly from Red Hat servers can currently still use access.redhat.com until the release of Red Hat Satellite 6.16.
New Red Hat accounts automatically use Simple Content Access for their subscription tooling. New Red Hat accounts and existing Satellite customers who can connect to Red Hat’s servers can find their manifests at console.redhat.com.
Prerequisites
- You have permissions to pull images from registry.redhat.io.
- A Red Hat account with Simple Content Access enabled.
Procedure
- If you need to access your manifest for your container images log in to Red Hat Console.
- Click the three-dot menu for the manifest you need for your container images, and click .
Log in to Podman by using your registry.redhat.io credentials:
$ podman login registry.redhat.io
- Enter your username and password.
Pull a container image:
$ podman pull registry.redhat.io/<container_image_name>:<tag>
Verification
To verify that the image you recently pulled is contained in the list, take these steps:
List the images in local storage:
$ podman images
- Check the image name, and verify that the tag is correct.
Additional resources
- See Red Hat Ecosystem Catalog Help for information on registering and getting images.
- See Creating and managing manifests for a connected Satellite Server to learn more about the changes coming to Red Hat subscription tooling
5.2. Tagging images for use in automation hub
After you pull images from a registry, tag them for use in your private automation hub container registry.
Prerequisites
- You have pulled a container image from an external registry.
- You have the FQDN or IP address of the automation hub instance.
Procedure
Tag a local image with the automation hub container repository:
$ podman tag registry.redhat.io/<container_image_name>:<tag> <automation_hub_hostname>/<container_image_name>
Verification
List the images in local storage:
$ podman images
- Verify that the image you recently tagged with your automation hub information is contained in the list.
5.3. Pushing a container image to private automation hub
You can push tagged container images to private automation hub to create new containers and populate the container registry.
Prerequisites
- You have permissions to create new containers.
- You have the FQDN or IP address of the automation hub instance.
Procedure
Log in to Podman using your automation hub location and credentials:
$ podman login -u=<username> -p=<password> <automation_hub_url>
Push your container image to your automation hub container registry:
$ podman push <automation_hub_url>/<container_image_name>
Troubleshooting
The push operation re-compresses image layers during the upload, which is not guaranteed to be reproducible and is client-implementation dependent. This may lead to image-layer digest changes and a failed push operation, resulting in Error: Copying this image requires changing layer representation, which is not possible (image is signed or the destination specifies a digest).
Verification
- Log in to your automation hub.
- Navigate to .
- Locate the container in the container repository list.
