需要一款稳定、兼容 RHEL 的 CentOS 替代方案？.pdf
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The Winner for the Best CentOS Linux Replacement is…
Oracle Linux
by, Marc Staimer
September 2021
Research Premises
DSC has taken a deep look at what Red Hat’s decision to kill off CentOS Linux means to users and their best
choice at replacing it. This DSC research is based on the following premises:
IBM-Red Hat announced late fall 2020 that it was discontinuing CentOS Linux.
CentOS Stream is not a CentOS Linux replacement for the vast majority of users per Red Hat CTO Chris
Wright.
Some CentOS Linux users will be able to use CentOS Stream as a replacement because Red Hat
Enterprise Linux (RHEL) is designed to track very closely to it. It’s essentially a preview of what’s coming
with RHEL. The downside comes from the fact CentOS Stream is a rolling release moving from one
minor version to another. It is an ongoing beta environment. Many of the releases are not yet
hardened, with limited to no quality assurance, nor incorporated into the current released RHEL
version, or production ready. Users that depend on CentOS Stream are by definition, beta testers.
There will be bugs. They’ll lose control when these minor version upgrades or betas, are implemented
on their system because it happens automatically. In addition, third party software vendors will not be
able to grant certification and support running their software on CentOS Stream. This is because they
can’t certify or support their software on an OS they still have to test. CentOS Stream will always be in
a state of flux for all users making ongoing certifications near impossible. Even software developed by
those running on CentOS Stream will have a very difficult time keeping it up to date with all of the
patches, fixes, and versions that will be coming unannounced all the time. If and only if these issues
aren’t a problem for them, can CentOS Stream be a viable replacement. Candidly, there are few users
that are able to utilize CentOS Stream as a replacement for CentOS Linux.
It has become clearly apparent after interviewing several dozen CentOS Linux users, that viable useful
CentOS Linux replacements minimally require the Linux distribution to:
o Be 100% application binary compatibility with RHEL.
o Minimize time delay for kernel releases tracking with RHEL.
o Provide all updates, patches, bug fixes, and versions promptly.
o Deliver rock solid and stable quality assured code.
The Winner for the Best CentOS Linux Replacement is…Oracle Linux
© 2021 DSC | 2
o Be available completely free with no mandatory support subscription.
o Patch bugs and vulnerabilities promptly.
o Provide all source code, binaries, updates, patches, errata, etc., freely available to the community.
o Have a proven history/record of stability, community support, and financial stability.
o Be committed to delivering their CentOS Linux replacement for years to come.
o A rich application ecosystem.
As noted, these are just the minimum requirements. They are by no means the only CentOS Linux
replacement requirements. Varying by CentOS Linux user, many are strongly desiring and in several
cases demanding other significant capabilities not found in CentOS Linux. Since they are being forced
to find alternatives to CentOS Linux, they want a replacement that provides more and solves several of
the CentOS Linux shortcomings. These include:
o Having available paid support.
o Enhanced security better than CentOS Linux.
o Faster loading of upgrades, hot fixes, and patches.
o Eliminate annoying CentOS networking randomly shutting down.
o Live patching without server slowdown, no reboot required, as an optional service.
o Simpler more intuitive management of both the Linux distribution and virtualization on-premises
and in the cloud.
o Portability between on-premises and public cloud.
o Supports both x86 and Arm based servers.
o Supports multiple Linux releases.
o Federal Information Processing Standards (FIPS), Common Criteria (CC) or Center for Internet
Security (CIS) certifications.
o A migration utility.
Executive Summary
This research is purposed to help CIOs and system administrators select the CentOS Linux replacement that
best fits their current and future requirements. It provides a candid evaluation of the market options. No
CIO wants to make the wrong choice and then have to go through yet another migration.
An in-depth examination of the most viable candidates makes it clearly evident that Oracle Linux is the top
choice to replace CentOS Linux. Unlike several of the other replacement options, it uniquely meets all of
both the minimum and desired CentOS Linux user requirements.
Some CentOS Linux users will be skeptical at best because it’s Oracle and likely incredulous about such a
conclusion. Oracle is one of the largest Enterprise software technology companies in the world. Others will
reject this conclusion out-of-hand because the distributor is Oracle and Oracle’s open-source history is
mixed. And yet regardless of the level of cynicism, any objective review will reach the same conclusion that
Oracle Linux is the best choice for replacing CentOS Linux while providing much more. Read on for the proof.
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