Flyio Upgrade Migration

# Check current version
fly postgres connect -a my-db -c "SELECT version();"

# Create new cluster with target version
fly postgres create --name my-db-v16 --region iad --image-ref flyio/postgres-flex:16

# Migrate data
fly postgres import pg_dump_url -a my-db-v16

# Update app to point to new cluster
fly postgres detach my-db -a my-app
fly postgres attach my-db-v16 -a my-app
fly deploy -a my-app  # Picks up new DATABASE_URL

Region Migration

# Add machines in new region
fly scale count 1 --region fra -a my-app

# Verify new region is healthy
fly status -a my-app

# Remove machines from old region
fly scale count 0 --region iad -a my-app

# For volumes: create new volume, migrate data, destroy old
fly volumes create data --size 10 --region fra -a my-app

Migration Checklist

• Current state documented (fly status, fly scale show)
• Database backed up before migration
• Tested migration in staging app first
• DNS/certificates transferred if changing domains
• Monitoring confirms healthy after cutover
• Old resources cleaned up

Resources

• Apps v2 Migration
• Postgres Upgrades

Next Steps

For CI integration, see flyio-ci-integration.