n8n 3.0 Is Docker-Only: What Self-Hosters Need to Change Before Upgrading

Описание и применение

Пользователи n8n, которые хостят собственные экземпляры, должны перейти на Docker и учесть изменения в версии 3.0, включая ограничение таймаута узла Code, удаление узлов Function, Cron и Interval, переход AI Agent v1 на Tools Agent и добавление подписи Slack.

Задача

Self-hosted n8n users must upgrade to Docker-only installation and address multiple breaking changes before version 3.0 release.

Результат

After following the checklist, self-hosted n8n users can upgrade to 3.0 without workflow failures and maintain continuous operation.

Рабочий процесс

• Export workflows and credentials
• Stand up Docker container for n8n
• Import and test workflows in Docker
• Search for Function, Cron, Interval nodes and replace with Code or Schedule Trigger
• Identify Code nodes exceeding 60s and refactor or offload heavy work
• Move AI Agent v1 workflows to Tools Agent and test with real prompts
• Add Slack signing secret to credential and verify Slack workflow
• Run Docker instance alongside old instance for a full day of real traffic
• Backup workflows and credentials before final upgrade

Доказательства

Self-hosted n8n becomes Docker-only in 3.0. npm and npx installs stop being supported.

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The Code node timeout goes from 5 minutes down to 1 minute.

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The Function, Cron, and Interval nodes are removed in 3.0.

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The Slack API credential now requires a signing secret.

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