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Chapter 2. Prepare for OpenDaylight installation
The following section lists the steps needed to deploy the overcloud with OpenDaylight.
This document only focuses on OpenDaylight installation. Before you can deploy OpenDaylight, you must make sure that you have a working undercloud environment and that the overcloud nodes are connected to the physical network.
See Installing the Undercloud and Configuring Basic Overcloud Requirements with the CLI Tools of the Director Installation and Usage guide, which describes the necessary procedures to deploy the undercloud and overcloud.
2.1. What are the minimum hardware requirements?
To correctly install and run Red Hat OpenDaylight, you should have enough computer resources. The following are the minimum requirements.
2.1.1. Compute Node Requirements
Compute nodes are responsible for running virtual machine instances after they are launched. All Compute nodes must support hardware virtualization. They also must have enough memory and disk space to support the requirements of the virtual machine instances they host.
| Processor | 64-bit x86 processor with support for the Intel 64 or AMD64 CPU extensions, and the AMD-V or Intel VT hardware virtualization extensions enabled. It is recommended this processor has a minimum of 4 cores. |
| Memory | A minimum of 6 GB of RAM. Add additional RAM to this requirement based on the amount of memory that you intend to make available to virtual machine instances. |
| Disk Space | A minimum of 40 GB of available disk space. |
| Network Interface Cards | A minimum of one 1 Gbps Network Interface Cards, although it is recommended to use at least two NICs in a production environment. Use additional network interface cards for bonded interfaces or to delegate tagged VLAN traffic. |
| Power Management | Each Controller node requires a supported power management interface, such as an Intelligent Platform Management Interface (IPMI) functionality, on the server’s motherboard. |
2.1.2. Controller Node Requirements
Controller nodes are responsible for hosting the core services in a Red Hat OpenStack Platform environment, such as the horizon dashboard, the back-end database server, keystone authentication, and High Availability services.
| Processor | 64-bit x86 processor with support for the Intel 64 or AMD64 CPU extensions. |
| Memory | Minimum amount of memory is 20 GB. However, the amount of recommended memory depends on the number of CPU cores. Use the following calculations as guidance: Controller RAM minimum calculation: Use 1.5 GB of memory per core. For example, a machine with 48 cores should have 72 GB of RAM. Controller RAM recommended calculation: Use 3 GB of memory per core. For example, a machine with 48 cores should have 144 GB of RAM. For more information on measuring memory requirements, see Red Hat OpenStack Platform Hardware Requirements for Highly Available Controllers on the Red Hat Customer Portal. |
| Disk Space | A minimum of 40 GB of available disk space. |
| Network Interface Cards | A minimum of 2 x 1 Gbps Network Interface Cards. Use additional network interface cards for bonded interfaces or to delegate tagged VLAN traffic. |
| Power Management | Each Controller node requires a supported power management interface, such as an Intelligent Platform Management Interface (IPMI) functionality, on the server’s motherboard. |
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