Founded by CentOS co-founder Gregory Kurtzer after Red Hat killed CentOS as a stable RHEL clone. Rapid adoption.
Rocky Linux is a downstream rebuild of Red Hat Enterprise Linux (RHEL), providing a free, community-supported, production-grade enterprise operating system. It aims for bug-for-bug binary compatibility with RHEL, meaning software certified for RHEL runs identically on Rocky. The project rebuilds the entire RHEL distribution — thousands of source packages — through automated build infrastructure.
When Red Hat announced in December 2020 that CentOS 8 would be killed off and replaced by the rolling-release CentOS Stream, the enterprise Linux community went into full panic mode. CentOS had been the free RHEL clone that powered countless production servers, and suddenly it was being pulled out from under them. Enter Gregory Kurtzer — co-founder of the original CentOS project back in 2004 — who announced Rocky Linux within hours of the news.
The name itself tells you everything about the project's emotional core: it honors Rocky McGaugh, Kurtzer's early CentOS co-founder and mentor who had passed away. This wasn't just a technical project; it was a personal mission. Within four days, the Rocky Linux GitHub repository was the top-trending repo on all of GitHub. The community was furious, and they had their champion.
Kurtzer moved fast. He established the Rocky Enterprise Software Foundation (RESF) as a non-profit to ensure the project could never be co-opted the way CentOS was when Red Hat acquired it in 2014. The first release candidate dropped on April 30, 2021, and Rocky Linux 8.4 'Green Obsidian' went GA on June 21, 2021 — an impressive turnaround for building an entire enterprise Linux distribution from scratch.
But Red Hat wasn't done making life difficult. In June 2023, they restricted public access to RHEL source code, forcing Rocky to find creative workarounds. Rocky's team devised an ingenious solution: spinning up RHEL cloud instances to download source packages, then shutting them down — technically making them Red Hat customers just long enough to grab the code. It was legally defensible, technically clever, and exactly the kind of hack that makes open source so resilient.
Rocky Linux has since become one of the two dominant CentOS replacements (alongside AlmaLinux), with broad enterprise adoption and a reputation for stability.
Red Hat announces CentOS 8 EOL and shift to CentOS Stream
Gregory Kurtzer announces Rocky Linux project
Rocky Linux GitHub repository becomes top-trending on GitHub
Rocky Linux 8.4 Release Candidate 1 released
Rocky Linux 8.4 'Green Obsidian' GA release
Red Hat restricts public RHEL source code access
Rocky Linux devises workaround using RHEL cloud instances to obtain source RPMs
“I was slow on the uptake, but I get what they are doing now.”
Rocky Linux filled the most critical gap in the enterprise Linux ecosystem since CentOS's original founding. Its creation proved that community-driven enterprise distributions remain viable even when upstream vendors try to restrict source access. The RESF governance model — explicitly designed to prevent another CentOS-style corporate acquisition — has become a template for how to structure an open source project to resist corporate capture.
Together with AlmaLinux, Rocky Linux ensured that the free RHEL-compatible ecosystem survived Red Hat's attempts to consolidate control. The 2023 source code restriction drama further galvanized the community and demonstrated that creative technical solutions can overcome corporate gatekeeping of open source code.