Leave Vercel for Your Own Server: A Next.js Migration Runbook

Описание и применение

Пошаговый план миграции Next.js‑приложения с Vercel на Levelrail, включающий инвентаризацию конфигурации, сопоставление концепций, тестовый деплой, переключение DNS и параллельный запуск для проверки.

Задача

Migrating a Next.js app from Vercel to a self‑hosted platform requires moving configuration that lives only in Vercel’s dashboard, such as environment variables, domains, cron jobs, and integrations.

Результат

The migration runbook enables a controlled, reversible transition from Vercel to Levelrail, preserving environment variables, domains, cron jobs, and other settings while allowing a shadow run to validate correctness.

Рабочий процесс

• Inventory Vercel configuration items
• Map each Vercel concept to a Levelrail counterpart
• Build the app on a test URL without real domains
• Lower DNS TTLs and switch DNS records
• Run a shadow period with both platforms active

Доказательства

Moving off Vercel is hard because of configuration, not code.

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Vercel holds configuration in its dashboard that never lived in your repo: env vars per environment, domain redirects, cron schedules, integrations.

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Run the new setup beside Vercel, and keep Vercel as your rollback until the checks at the end pass.

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Vercel has no automatic importer. Everything here is manual.

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The platform injects env only when a container starts, so it never reaches the build.

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