RHEL / CentOS 7 to RHEL 8 / AlmaLinux 8 / Rocky Linux 8 Migration

Upgrading from EL7 to EL8 is not a simple in-place update — it requires careful planning, package mapping, configuration conversion, dependency resolution, and testing. We handle the entire process, from assessment to production cutover, with proven methods that minimize business disruption.

Our migration services include:

• Pre-Migration Assessment & Planning – Inventory of packages, services, custom configs, kernel modules, and compatibility risks
• Distribution Selection & Strategy – Recommend RHEL 8 (paid), AlmaLinux 8, or Rocky Linux 8 based on your licensing, support needs, and budget
• Zero/Minimal Downtime Migration – Parallel build of new EL8 servers, rsync data transfer, live cutover, or blue-green deployment
• Package & Repository Conversion – Mapping CentOS/RHEL 7 packages to EL8 equivalents, handling EPEL, third-party repos, and custom RPMs
• Configuration & Application Migration – Convert configs (httpd, postfix, bind, iptables → firewalld, etc.), port custom scripts, test applications
• Security Hardening & Compliance – Apply CIS benchmarks, SELinux policy updates, firewall migration, vulnerability scanning post-upgrade
• Post-Migration Optimization & Validation – Performance tuning, monitoring setup, backup validation, rollback planning
• Training & Documentation – Team handover, cheat sheets, and documentation for ongoing EL8 management

Why choose Zwiegnet for EL7 → EL8 migration? Proven zero-downtime success since CentOS EOL, deep experience with RHEL-family distributions, and senior-level engineers who understand production impacts — all without the overhead of large vendors.