Step 4: View node inventory

When discovery_provision.yml, prepare_oim.yml, or utils/inventory_tagging.yml is run, a set of inventory files is created in /opt/omnia/omnia_inventory/ based on the Omnia database. The inventories are created based on the type of CPUs and GPUs nodes have. The inventory files are:

• compute_cpu_amd

  # This file is generated by omnia, and should not be edited
  [compute_cpu_amd]
  node001.omnia.test
  

• compute_cpu_intel

  # This file is generated by omnia, and should not be edited
  [compute_cpu_intel]
  node001.omnia.test
  

• compute_gpu_amd

  # This file is generated by omnia, and should not be edited
  [compute_gpu_amd]
  node002.omnia.test
  node003.omnia.test
  

• compute_gpu_nvidia

  # This file is generated by omnia, and should not be edited
  [compute_gpu_nvidia]
  node001.omnia.test
  

• compute_gpu_intel

  # This file is generated by omnia, and should not be edited
  [compute_gpu_intel]
  node001.omnia.test
  

• compute_hostname_ip

  # This file is generated by omnia, and should not be edited
  [compute_hostname_ip]
  node001.omnia.test ansible_host=10.5.0.2
  node002.omnia.test ansible_host=10.5.0.3
  node003.omnia.test ansible_host=10.5.0.4
  

Note

• Hostnames will only be written into the inventory files after the nodes are successfully PXE booted post provisioning.

• For a node’s hostname to list in an inventory file, two conditions must be met:

  • Node status must be “booted” in DB.

  • Node’s hostname information is present in DB.

• To regenerate all the inventory files, use the playbook utils/inventory_tagging.yml.

• After the nodes have successfully PXE booted, it may take up to three minutes for their details to appear in the generated inventory files.

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