RHEL 9 migration and support

RHEL 9 is the current mainstream release, with a newer kernel, Python 3.9+, OpenSSL 3 and stricter crypto policies that break some older applications and SSH keys. Most businesses on RHEL 8 should be planning the move now.

We use Leapp for in-place upgrades where the application stack allows it and rebuilds where it does not, and we test the OpenSSL 3 and crypto-policy impact before touching production.

At a glance

What RackLedge does

• Pre-upgrade assessment with Leapp and application checks
• In-place or rebuild migration
• Crypto policy and SSH key remediation
• Post-upgrade validation

How we work

Linux fleets stay healthy through automation and discipline. We build servers from a standard image with Ansible, patch them on a schedule with a staging ring, keep SELinux or AppArmor on, and log everything to a central collector. The result is a fleet that looks the same everywhere and can be rebuilt from Git.

Migrations, whether CentOS to Rocky, RHEL 8 to 9 or Windows to Linux, are done per workload with a test pass, a cutover window and a rollback. We coordinate with application vendors and keep the paperwork for compliance.

Subscriptions and licences are reviewed as part of the work. Plenty of businesses pay for RHEL where Rocky would do, or run unsupported CentOS where a subscription would satisfy an auditor. We fix both directions.

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