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There has not been a lot of investigation on the minimum requirements for ACS to run normally, but some requirements are known.

General requirements

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• Processor: Unknown
• RAM: At least 4 GB. Some people see intermittent behavior at this limit
• Storage: 10 GB

Requirements by service

You may decide to distribute the core ACS services into several machines, in which case the general requirements don't apply completely. In this case take into consideration the specific service's requirements when available.Minimum requirements by service:

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Operating System Compatibility

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• RHEL 7.6 (Maipo)
• CentOS 7.6
• RHEL 8.5 (Ootpa) – ACS Prerequisites - RHEL 8 / CentOS 8 / CentOS Stream 8
• CentOS Stream 8 – ACS Prerequisites - RHEL 8 / CentOS 8 / CentOS Stream 8

Under Test:

• CentOS Stream 9 – ACS Prerequisites - RHEL 9 / CentOS Stream 9
• Fedora 34/35/36 – ACS Prerequisites - Fedora
• Debian 10/11 – ACS Prerequisites - Debian
• Ubuntu 20.04/22.04 – ACS Prerequisites - Ubuntu
• RHEL 8.x
• CentOS 8x

Known to work in the past (Some efforts may be needed to make it work again):

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• Debian
• Ubuntu
• Cygwin (Windows) – ACS Prerequisites - Windows - Cygwin

For the current compatibility status, pleaste take a look at ACS Operating System Support.

Kernel Version

For all machines the expected kernel is 3.10 (Other Kernel versions do work, but are not officially supported) are in the following list:

• RHEL 7: 3.10
• RHEL 8: 4.18
• RHEL 9: 5.14

External Tools

The expected and actual versions of compilers, ORBs and various RPMs can be found by running the command =acsConfigReport=, both for required RPMs and for software shipped together with ACS. To get a rough overview before installing ACS, here are the most basic ones:

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No specific version is specified, but only the ones provided with RHEL 7.6 (Maipo) and RHEL 8.5 (Santiago) are thoroughly tested.