- Once
provision.yml
is used to configure devices, it is recommended to avoid rebooting the control plane. - Omnia supports adding only 1000 nodes when discovered via BMC.
- Removal of Slurm and Kubernetes component roles are not supported. However, skip tags can be provided at the start of installation to select the component roles.
- After installing the Omnia control plane, changing the manager node is not supported. If you need to change the manager node, you must redeploy the entire cluster.
- Dell Technologies provides support to the Dell-developed modules of Omnia. All the other third-party tools deployed by Omnia are outside the support scope.
- To change the Kubernetes single node cluster to a multi-node cluster or change a multi-node cluster to a single node cluster, you must either redeploy the entire cluster or run
kubeadm reset -f
on all the nodes of the cluster. You then need to run theomnia.yml
file and skip the installation of Slurm using the skip tags. - In a single node cluster, the login node and Slurm functionalities are not applicable. However, Omnia installs FreeIPA Server and Slurm on the single node.
- To change the Kubernetes version from 1.16 to 1.19 or 1.19 to 1.16, you must redeploy the entire cluster.
- The Kubernetes pods will not be able to access the Internet or start when firewalld is enabled on the node. This is a limitation in Kubernetes. So, the firewalld daemon will be disabled on all the nodes as part of omnia.yml execution.
- Only one storage instance (Powervault) is currently supported in the HPC cluster.
- Cobbler web support has been discontinued from Omnia 1.2 onwards.
- Omnia supports only basic telemetry configurations. Changing data fetching time intervals for telemetry is not supported.
- Slurm cluster metrics will only be fetched from clusters configured by Omnia.
- All iDRACs must have the same username and password.
- OpenSUSE Leap 15.3 is not supported on the Control Plane.
- Slurm Telemetry is supported only on a single cluster.
- Omnia might contain some unused MACs since LOM switch have both iDRAC MACs as well as ethernet MACs, PXE NIC ranges should contain IPs that are double the iDRACs present.
- FreeIPA authentication is not supported on the control plane.