Base
Hardened build
minimal ports, security patches applied at build time
AlmaLinux 9 Arm64
Azure
Operating Systems
AlmaLinux 9 for 64 bit Arm, a free RHEL 9 compatible enterprise Linux base for Ampere and Cobalt class Arm virtual machines.
Overview
AlmaLinux 9 is a community owned enterprise Linux distribution produced by the AlmaLinux OS Foundation to be binary compatible with Red Hat Enterprise Linux 9, following the RHEL 9 lifecycle. This is the 64 bit Arm (AArch64) build, for the Arm based virtual machine sizes now offered across the major clouds (Ampere Altra and Cobalt class hardware), which pair strong per core performance with lower cost than comparable x86 sizes.
It suits teams standardising an enterprise Linux baseline on Arm: web and application tiers, containerised workloads, CI runners and cost sensitive fleets that want the RHEL 9 compatibility they already rely on, on Arm silicon. This listing tracks the AlmaLinux 9 major release; the machine reports the current 9 point release it is patched to at procurement time.
Why the cloudimg image
The cloudimg image is a minimal AlmaLinux 9 Arm64 base brought fully up to date at build time and again immediately before capture, with SELinux left in Enforcing mode and the root password locked. No credential is baked in: access is by the SSH key you choose at launch, and SSH host keys and the machine id are regenerated per machine, so no two instances share a secret or an identity. Automatic updates are armed and enabled, never auto rebooting, so the machine keeps patching itself. BaseOS and AppStream stay enabled so you keep a working update path, no subscription or licence key is required, and 24/7 support is included.
Common uses
- RHEL 9 compatible application hosting on Arm virtual machines
- Cost efficient web, container and CI fleets on Ampere and Cobalt class hardware
- A standard enterprise Linux baseline for managed Arm fleets
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