Before you build clusters
Verify that all inventory files are updated.
If the cluster requires more than 10 kubernetes nodes, use a docker enterprise account to avoid docker pull limits.
Verify that all nodes are assigned a group. Use the inventory as a reference. The inventory file is case-sensitive. Follow the casing provided in the sample file link.
The manager group should have exactly 1 manager node.
The compute group should have at least 1 node.
The login group is optional. If present, it should have exactly 1 node.
Note
The inventory file accepts both IPs and FQDNs as long as they can be resolved by DNS.
In a multi-node setup, IP’s cannot be repeated in the manager or compute groups. That is, don’t include the manager node IP address in the compute group. In a single node setup, the compute node and the manager node must be the same.
Users should also ensure that all repos are available on the cluster nodes running RHEL.
Nodes provisioned using the Omnia provision tool do not require a RedHat subscription to run
omnia.yml
on RHEL cluster nodes.For RHEL cluster nodes not provisioned by Omnia, ensure that RedHat subscription is enabled on all target nodes. Every target node will require a RedHat subscription.
If you have any feedback about Omnia documentation, please reach out at omnia.readme@dell.com.