OpenStack Installation Requirements

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Solaris systems on which you install OpenStack must meet the following requirements:

Operating system. Your OpenStack systems must be running Oracle Solaris 11.2. To install Oracle Solaris 11.2, see Installing Oracle Solaris 11.2 Systems . To download installation images, see the Oracle Solaris 11.2 Downloads page. To upgrade from a previous version of Oracle Solaris 11 to Oracle Solaris 11.2, see Updating to Oracle Solaris 11.2 and Chapter 4, Updating or Upgrading an Oracle Solaris Image, in Adding and Updating Software in Oracle Solaris 11.2 .
Hardware. To ensure that your systems support Oracle Solaris 11.2, see Oracle Solaris 11.2 System Requirements or System Requirements for Installing Oracle Solaris 11.2 in Oracle Solaris 11.2 Release Notes . You need up to 5 GB additional space to install OpenStack, depending on which OpenStack services you install on each node. Ensure that you have enough CPUs, memory, and disk space on your Compute nodes to support the desired number of VM instances. Your systems should have 100-200 GB of ZFS storage for VM instance images and for creating VM instances.
Virtualization support. Your OpenStack systems should support kernel zones. VM instances can be either non-global zones or kernel zones.

To verify if your system supports virtualization, type the virtinfo command on a terminal window. The command output should display the information as shown in the following example:
```
# virtinfo
NAME             CLASS
non-global-zone  supported
kernel-zone      supported
```
For kernel zone support, your system must fulfill the following additional requirements:
- A minimum of 8 GB of physical RAM.
- Sufficient tuning of the ZFS Adaptive Replacement Cache (ARC) on the host to prevent memory errors. For more information, see Tuning the Host ZFS ARC Cache on a Kernel Zone Host in Creating and Using Oracle Solaris Kernel Zones .
Note - Kernel zones cannot run in Oracle VM Server for x86 guests or on Oracle VM VirtualBox.

For more information about kernel zone installation requirements, see the following resources:
- Hardware and Software Requirements for Oracle Solaris Kernel Zones in Creating and Using Oracle Solaris Kernel Zones
- The README file in the “Oracle Solaris 11.2 OpenStack Unified Archive” section on the Oracle Solaris 11.2 OpenStack Unified Archive download page

See Known Limitations for additional information that can affect OpenStack installation.