Three networks are used in the cluster:
- Cluster Data network
- Baseboard Management Controller (BMC) iDRAC network
- Edge network
The table below describes the networks, their purposes, and their switch connections.
Network | Description | Available services | Connection | Switch |
Cluster Data network | This network carries the bulk of the traffic within the cluster. This network is aggregated within each pod, and pods are aggregated into the cluster switch. | The Cloudera Enterprise services are available on this network. | 25 GbE | Top of rack (pod) switches and aggregation switches |
BMC or iDRAC network | This network connects the BMC or iDRAC ports and the out-of-band management ports of the switches. It is used for hardware provisioning and management. This network is aggregated into a management switch in each rack. | This network provides access to the BMC and iDRAC functionality on the servers. It also provides access to the management ports of the cluster switches. | 1 GbE | Dedicated switch per rack |
Edge network | This network provides connectivity from the Edge nodes to an existing network, either directly or by the pod or cluster aggregation switches. | SSH access to Edge nodes is available on this network. Other application services may be configured and available. | 25 GbE | Direct to the Edge network, or by pod or aggregation switch |
Connectivity between the cluster and existing network infrastructure can be adapted to specific installations. Common scenarios include:
- The Cluster Data network is isolated from any existing network, and access to the cluster is by the Edge network only.
- The Cluster Data network is exposed to an existing network. In this scenario, the Edge network is either unused or is used for application access or ingest processing.
Each network uses a separate VLAN and dedicated components when possible.