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If you plan on installing the CentOS 8 distribution directly on a headless server, your computer must support a 64‐bit processor architecture. Here is a list of a few that will work well:

 AMD amd64

 ARM64 (not supported by RHEL)

 Intel amd64

 POWER9 (not supported by RHEL)

Besides having the proper processor on your system, you need to have enough resources available to avoid a sluggish system. Table 4.1 shows the recommended resources to support a well‐running CentOS distro.

TABLE 4.1: Recommended Server Resources for CentOS Distribution

RESOURCE	MINIMUM	RECOMMENDED
CPU	1.8 GHz	2 or more GHz
Memory	2 GB	2 GB per logical CPU
Disk space	10 GB	20 or more GB

Notice the “per logical CPU” tag in the recommended memory. This is because CentOS can support some rather powerful CPUs, and it treats every core (or thread) in a multicore (or thread) processor as a logical CPU. So if you have a dual‐core processor, it is recommended that you have 4 GB of RAM on your system, while a quad‐core processor needs 8 GB of memory.

Also, keep in mind that these recommendations are only for the operating system. Increase these resources to meet the needs of the application(s) you will run on the server.

If you don't have access to a physical server, you can set up a virtual environment on a laptop or an old desktop. Using a virtualized system on your laptop provides a great deal of flexibility. Wherever you go with your laptop, you can learn about Linux.