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Hardware setup
The standard hardware requirements:
However, OpenStack does not require a significant amount of resources and the following minimum requirements should support a proof-of-concept high availability environment with core services and several instances:
[TODO: Verify that these numbers are good]
| Node type | Processor | Memory | Storage |
|---|---|---|---|
| controller node | 3 | 2 GB | 5 GB |
| network node | 3 | 512 MB | 5 GB |
| compute node | 3 | 2 GB | 10 GB |
For demonstrations and studying, you can set up a test environment on virtual machines (VMs). This has the following benefits:
- One physical server can support multiple nodes, each of which supports almost any number of network interfaces.
- Ability to take periodic "snap shots" throughout the installation process and "roll back" to a working configuration in the event of a problem.
However, running an OpenStack environment on VMs degrades the performance of your instances, particularly if your hypervisor and/or processor lacks support for hardware acceleration of nested VMs.
Note
When installing highly-available OpenStack on VMs, be sure that your hypervisor permits promiscuous mode and disables MAC address filtering on the external network.