ZWIEGNET Linux Consultants

RHEL / AlmaLinux / Rocky Linux 8 to 9 Migration

Smooth, Low-Risk Upgrades – Stay Current, Secure, and Supported

RHEL 8 and its free clones (AlmaLinux 8, Rocky Linux 8) will reach end-of-life in 2029, but upgrading early avoids compatibility issues, security gaps, and future migration pain. Zwiegnet specializes in safe, minimal/zero-downtime migrations to RHEL 9 / AlmaLinux 9 / Rocky Linux 9, with full testing and post-upgrade tuning.

Start Your EL8 to EL9 Migration

Our EL8 to EL9 Migration Services

Upgrading from EL8 to EL9 involves significant changes (newer kernel, updated packages, systemd/firewalld changes, Python 3.9+, crypto policy updates). We handle the entire process — from assessment to production cutover — using proven methods that minimize risk and downtime.

Our migration services include:

  • Pre-Migration Assessment & Planning – Full inventory of packages, services, custom configs, kernel modules, and compatibility analysis
  • Distribution Strategy & Recommendation – RHEL 9 (paid), AlmaLinux 9, or Rocky Linux 9 based on your support needs, licensing, and ecosystem
  • Zero/Minimal Downtime Migration – Parallel EL9 server build, rsync/live data transfer, blue-green cutover, or in-place conversion with rollback
  • Package & Repository Conversion – Mapping EL8 packages to EL9 equivalents, handling EPEL, third-party repos, and custom RPMs
  • Configuration & Application Migration – Convert configs (httpd → apache, iptables → nftables/firewalld, etc.), port scripts, test applications
  • Security Hardening & Compliance – Apply latest CIS benchmarks, crypto policy updates, SELinux policy migration, vulnerability scanning post-upgrade
  • Post-Migration Optimization & Validation – Kernel tuning, performance benchmarking, monitoring setup, backup validation, and documentation
  • Training & Handover – Team training on EL9 changes, cheat sheets, and best practices for ongoing management

Why choose Zwiegnet for EL8 → EL9 migration? Proven success with RHEL-family upgrades, deep understanding of production impacts, and senior engineers who minimize disruption — all without big-vendor overhead.

EL8 support ends in 2029 – Upgrade now to avoid future pain

Plan Your EL8 to EL9 Migration Today