portfolio/migration-validation-framework/scenarios/before_after_comparison.md

Scenario: Before/After Migration Comparison

Description

Compare a pre-cutover host snapshot against a post-cutover snapshot and determine whether the migrated system is ready for production traffic.

Commands

cd migration-validation-framework
python3 cli.py compare examples/before.json examples/after.json --output /tmp/migration-diff.json

Expected Result

• The command writes a JSON diff.
• The result is FAIL because sshd is failed after migration.
• The risk assessment highlights the /var disk usage increase.
• The remediation path is to restore SSH and reduce or expand /var before approving cutover.