Network and Storage Details
Network Configuration
The CADES Cloud allocations consist of two primary network environments or subnets—an external subnet and an internal subnet—described below. While either subnet can be used for a VM Instance, only one IP address can be allocated to each subnet per VM Instance.
📝 Note: If you wish to run services on your VM Instance that should be available outside of ORNL's network, ensure that you select the External Network option when setting up your VM Instance and that you also add a rule to your Security Group for that particular service.
External Network
- general_extnetwork1: 128.219.184.0/21.
- Required for services to be available outside of ORNL's network.
- Outward-facing services (e.g., a web server) will require ORNL firewall exceptions (instructions).
- Routed to most "open" networks at ORNL.
- Outbound access is allowed per existing open research firewall exceptions.
Internal Network
- general_intnetwork1 = 172.22.0.0/20.
- Services will not be available outside of ORNL's network.
- Outward-facing services (e.g., a web server) will only be available from within ORNL.
- Routed to most "open" networks at ORNL.
- Outbound access is allowed through existing open research firewall exceptions.
Important Notes for OpenStack Network Design
- IPV6 is not currently supported.
- In all cases, accessing a VM Instance via SSH from outside of ORNL's network requires a SAFER exception to allow inbound traffic on port 22 (SSH).
- SSH access from an instance to a destination outside of ORNL's network may route through the ORNL SSH proxy service (instructions), or the user can request an outbound exception using SAFER.
- If you wish to run services on your VM Instance that should be available outside of ORNL's network, ensure that you also select the External Network option when setting up your VM Instance.
Storage Configuration
- NFS – CADES Projects use a Network File System (NFS).
- Lustre – Lustre allocations are available upon request.
📝 Note: No moderate/confidential data should be mounted or copied to your CADES Cloud VM Instance. CADES Cloud VM Instances are for open science.