AlmaLinux 10 takes a slightly different approach than Rocky Linux. While both provide free RHEL alternatives, AlmaLinux focuses on ABI compatibility rather than bug-for-bug reproduction, giving the project room to apply its own security patches and improvements.
ABI Compatibility vs Bug-for-Bug
AlmaLinux’s approach means:
- Binary packages from RHEL 10 run on AlmaLinux 10 without modification
- Applications compiled on AlmaLinux work on RHEL and vice versa
- AlmaLinux can ship security fixes faster than waiting for RHEL errata
- Minor differences in non-critical packages are acceptable
This is a pragmatic position. For most workloads, ABI compatibility is what matters — your applications, containers, and automation work identically.
What Is New
AlmaLinux 10 includes:
- Kernel 6.12 LTS with AlmaLinux-specific hardening patches
- Full bootc/image mode support
- Updated development toolchains matching RHEL 10
- EPEL 10 repository support from day one
- AlmaLinux-specific security advisories (ALSA) with detailed CVE tracking
Installation and Migration
# Fresh install from almalinux.org/get-almalinux
# Or convert from CentOS/Rocky/RHEL:
curl -O https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh
sudo bash almalinux-deploy.shAlmaLinux Foundation
The AlmaLinux OS Foundation is a 501(c)(6) nonprofit with corporate sponsors including CloudLinux, AWS, ARM, and Equinix. The governance structure includes:
- Community-elected board members
- Public financial reporting
- Transparent decision-making process
- Multiple corporate sponsors (no single-vendor control)
Kubernetes and Container Workloads
AlmaLinux 10 works as a Kubernetes node OS. The almalinux/9-base container images on Docker Hub have 1B+ pulls, making AlmaLinux one of the most popular container base images:
FROM almalinux:10
RUN dnf install -y python3 && dnf clean all
COPY app.py /app/
CMD ["python3", "/app/app.py"]Automating with Ansible
Ansible modules work identically on AlmaLinux and RHEL:
---
- name: Harden AlmaLinux 10
hosts: almalinux10
roles:
- role: hardening
vars:
enable_fips: true
configure_firewall: trueFinal Thoughts
AlmaLinux 10 and Rocky Linux 10 are both excellent free RHEL alternatives. Choose AlmaLinux if you value the ABI compatibility approach (faster security patches) and the nonprofit foundation governance. Choose Rocky if you prefer strict bug-for-bug compatibility. Either way, your Ansible playbooks and Kubernetes configurations work unchanged.
