Running local repo

The local repository feature will help create offline repositories on the OIM which all the cluster nodes will access.

Configurations made by the playbook

  • A registry is created on the OIM at <OIM hostname>:5001.

  • If repo_config in local_repo_config.yml is set to always or partial, all images present in the input/config/<cluster_os_type>/<cluster_os_version> folder will be downloaded to the OIM.

    • If the image is defined using a tag, the image will be tagged using <OIM hostname>:5001/<image_name>:<version> and pushed to the Omnia local registry.

    • If the image is defined using a digest, the image will be tagged using <OIM hostname>:5001/<image_name>:omnia and pushed to the Omnia local registry.repositories

  • When repo_config in local_repo_config.yml is set to always, the OIM is set as the default registry mirror.

  • When repo_config in local_repo_config is set to partial, the user_registry (if defined) and the OIM are set as default registry mirrors.

To create local repositories, run the following commands:

cd local_repo
ansible-playbook local_repo.yml

Caution

During the execution of local_repo.yml, Omnia 1.7 will remove packages such as podman, containers-common, and buildah (if they are already installed), as they conflict with the installation of containerd.io on RHEL/Rocky Linux OS OIM.

Verify changes made by the playbook by running cat /etc/containerd/certs.d/_default/hosts.toml on compute nodes.

Note

  • View the status of packages for the current run of local_repo.yml in /opt/omnia/offline/download_package_status.csv. Packages which are already a part of AppStream or BaseOS repositories show up as Skipped.

  • local_repo.yml playbook execution fails if any software package download fails. Packages that fail are marked with a “Failed” status. In such a scenario, the user needs to re-run the local_repo.yml playbook. For more information, click here.

  • If repo_config is set to partial, packages which are part of the user_repo_url or images which are part of user_registry have a Skipped status in /opt/omnia/offline/download_package_status.csv.

  • If any software packages failed to download during the execution of this script, scripts that rely on the package for their working (that is, scripts that install the software) may fail.

To fetch images from the user_registry or the Omnia local registry, run the below commands:

  • Images defined with versions: nerdctl pull <global_registry>/<image_name>:<tag>

  • Images defined with digests: nerdctl pull <global_registry>/<image_name>:omnia

Note

  • After local_repo.yml has run, the value of repo_config in input/software_config.json cannot be updated without running the oim_cleanup.yml playbook first.

  • To configure additional local repositories after running local_repo.yml, update software_config.json and re-run local_repo.yml.

  • Images downloaded from gcr.io into the local registry are no longer accessible using digest values. These images are tagged with the ‘omnia’ tag. Choose one of the following methods when pushing these images to the cluster nodes:

    • Append ‘omnia’ to the end of the image name while pushing images to the user_registry. Update the image definition in input/config/<cluster_os_type>/<cluster_os_version>/<software>.json to follow the same nomenclature.

    • For “kserve” and “kubeflow” images sourced from gcr.io, Omnia updates the digest tag to omnia-kserve and omnia-kubeflow while pushing the images to user_registry.

    • If a different tag is provided, update the digest value in input/config/<cluster_os_type>/<cluster_os_version>/<software>.json as per the image digest in the user_directory. To get the updated digest from the user_registry, use the below steps:

      • Check the tag of image: curl -k https://<user_registry>/v2/<image_name>/tags/list

      • Check the digest of the tag: curl -H <headers> -k https://<user_registry>/v2/<image_name>/manifests/omnia

Update local repositories

This playbook updates all local repositories configured on a provisioned cluster after local repositories have been configured.

To run the playbook:

cd utils
ansible-playbook update_user_repo.yml -i inventory

If you have any feedback about Omnia documentation, please reach out at omnia.readme@dell.com.