The upgrade feature allows users to upgrade from Omnia 1.5.1 to Omnia 1.6.

To initiate upgrade, fill out the following parameters in omnia/upgrade/upgrade_config.yml:

old_input_location backup_location

Once omnia/upgrade/upgrade_config.yml is filled in, run the following command from omnia/upgrade:

ansible-playbook prepare_config.yml -i <omnia_1.5.1_inventory_file_path>

This playbook uses the input config upgrade_config.yml to import the configuration parameters from Omnia 1.5.1 and generates the Omnia 1.6 input configurations and inventory. The playbook also sets Omnia v1.6 execution environment by updating the ansible and python version to match the Omnia v1.6 requirements. A backup of Omnia Database is taken in the backup_location specified in upgrade_config.yml

The above playbook performs the following: * Auto-populates Omnia v1.6 config files in the <omnia_1.6_location>/omnia/input . * Auto-generates inventory file in Omnia 1.6 format. This is available in the omnia/upgrade folder.

Before proceeding further, users have to review and update (if required) the auto-populated Omnia v1.6 config files present in the <omnia_1.6_location>/omnia/input . * Review the software_config.json file * Update the local_repo_config.yml file: Add rhel_os_url when Control Plane OS is RHEL * Verify the network_spec.yml: Verify the values populated for admin_network and bmc_network * Verify omnia_config.yml: If the Omnia 1.5.1 setup has slurm configured, it will be upgraded as configless slurm installation

Check the new Inventory created: * The new inventory format will have all Omnia 1.5.1 manager hosts populated as kube_control_plane and/or slurm_control_node based on the scheduler_type. * All Omnia 1.5.1 compute nodes would be populated as kube_node and/or slurm_node based on the scheduler_type.

Verify Omnia Database backup taken: Ensure the database backup is created at the backup_location specified in upgrade_config.yml

Once everything is verified, run the following command from omnia/upgrade:

ansible-playbook prepare_upgrade.yml -i <omnia_1.5.1_inventory_file_path>

The above playbook performs the following: * Run validations on the Omnia 1.6 input configuration files * Cleanup Omnia v1.5.1 Telemetry by preserving the persistent data * Cleanup Omnia v1.5.1 OpenLDAP packages on the Control Plane * Cleanup Omnia v1.5.1 Kubernetes on the cluster * Configures the Omnia v1.6 local_repo based on entries populated in software_config.json present in <omnia_1.6_location>/omnia/input * Prepares the Control Plane: This includes upgrading xcat, setting up Omnia telemetry binaries for cluster and restoring the Omnia DB backup to Omnia v1.6 format

This playbook upgrades the Omnia v1.5.1 cluster to Omnia v1.6. Run the following command from omnia/upgrade:

ansible-playbook upgrade.yml -i <omnia_1.6_auto_generated_inventory>

This playbook upgrades the control plane and cluster to Omnia 1.6