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The AlmaLinux OS Foundation is proud to announce that the stable release of AlmaLinux OS 9.1, codenamed “Lime Lynx”, became available on 16 November 2022. This is the first minor release in the 9.0 series following 9.0, and is based on the source code of Red Hat Enterprise Linux 9.1.
The installer ISO images are now available for four different architectures:
Of course, a torrent distribution option is also available; the torrent files can be downloaded below:
You can download the AlmaLinux 9.1 x86_64 minimal installer straight away from the AlmaLinux archive (vault.almalinux.org).
Cloud and containers, plus a live system
AlmaLinux also offers a range of cloud and container builds, as well as disk images. Work on these builds had already begun, but at the time of release not all images for every platform were ready; however, the following soon became available: live systems (GNOME, GNOME-mini, KDE, XFCE), AWS, Azure, Google Cloud, OpenNebula and Oracle Cloud images, a general cloud-init image, Docker images, as well as Raspberry Pi and WSL versions.
Release notes and further information
AlmaLinux 9.1 Lime Lynx provides a more stable foundation for open hybrid cloud innovation, with new developments (5.14.0-162.6.1.el9_1 Linux kernel version) and features for the more efficient implementation of workloads, applications and services across multiple environments, as well as security features and updates to reduce risks and maintain better compliance. This release also includes PHP language updates and new features. New automation and management features are provided to automate additional manual tasks, facilitate the scalable execution of standard installation processes, and simplify day-to-day system administration. These enhancements include the addition of numerous system roles, as well as new capabilities and features in the web console. As for containers, Sigstore technology has been integrated into the container tools. You can read more about this release in the release notes; the full list can be found in the Red Hat Enterprise Linux 9.1 release notes.
Software versions in AlmaLinux 9.1
The most important new features for web server operators are PHP 8.1, Node.js 18 and the Ruby 3.1 module stream. According to the release notes:
| Area | Versions |
|---|---|
| New ‘Streams’ module | PHP 8.1, Ruby 3.1, Node.js 18 |
| Web server | Apache HTTP Server 2.4.53 |
| Compilers and toolkits | GCC Toolset 12, LLVM Toolset 14.0.6, Rust Toolset 1.62, Go Toolset 1.18 |
| Infrastructure | chrony 4.2, unbound 1.16.2, frr 8.2.2 |
| Troubleshooting and performance monitoring | Valgrind 3.19, SystemTap 4.7, Dyninst 12.1.0, elfutils 0.187, PCP 5.3.7, Grafana 7.5.13 |
PHP 8.1 can be enabled via the module system:
dnf module reset php
dnf module install php:8.1
Before doing so, it’s worth checking whether the CMS you’re using and its plugins support PHP 8.1.
Security and Networking
- Keylime: a new tool for remote attestation which uses TPM to verify that a server’s boot process and files have not been tampered with
- SELinux: user packages have been updated to version 3.4, the
semodulenow supports the SHA-256 checksum, andlibsepol-utilshas been updated with new policy tools - Clevis: LUKS volumes mounted during the late stages of system boot can also be automatically unlocked
- NetworkManager: connection profiles in the old ifcfg format can be converted to the new keyfile format; WEP encryption is no longer supported in AlmaLinux 9
- MPTCP: the kernel’s Multipath TCP code has been updated to the upstream Linux 5.19 level
- Minimal ISO: OpenSCAP profiles can be selected during installation; rsyslog is included in the minimal installation, and kernel-modules-extra supports additional hardware
ISO verification and updating
You can verify the integrity of the downloaded installer using the AlmaLinux 9 GPG key and the signed CHECKSUM file:
wget https://repo.almalinux.org/almalinux/RPM-GPG-KEY-AlmaLinux-9
gpg --import RPM-GPG-KEY-AlmaLinux-9
wget https://vault.almalinux.org/9.1/isos/x86_64/CHECKSUM
gpg --verify CHECKSUM
sha256sum AlmaLinux-9.1-x86_64-boot.iso
The line “Good signature from ‘AlmaLinux OS 9’” should appear, and the sha256sum result should match the value in the CHECKSUM file. An existing AlmaLinux 9 system can be updated using the dnf upgrade -y command; this will now update it to the latest point release in the series. You can upgrade from AlmaLinux 8 to 9 using the ELevate tool; the steps for this are detailed in our ELevate guide.
How long will AlmaLinux 9 be supported?
Active support for AlmaLinux 9 will continue until 31 May 2027, and security updates will be provided until 31 May 2032. Individual point releases will reach the end of their lifecycle upon the release of the following versions. Further releases in the 9 series:
- AlmaLinux 9.0 (May 2022)
- AlmaLinux 9.2 (May 2023)
- AlmaLinux 9.3 (November 2023)
- AlmaLinux 9.4 (May 2024)
- AlmaLinux 9.5 (November 2024)
- AlmaLinux 9.6 (May 2025)
- AlmaLinux 9.7 (November 2025)
- AlmaLinux 9.8 (May 2026)
If you’d like to run AlmaLinux 9 on your own server, you can select it as your operating system when ordering a KVM VPS or a dedicated server.