Describe the problem/error/question I have a problem when authorizing access to BigQuery and Google Gemini nodes in my workflow. I use the same workflow in the cloud version, and everything works well. However, when I tried the exact same workflow in a self-hosted N8N instance within Coolify, it ref…

After digging around, I discovered the problem was that Google blocked Hetzner’s IP addresses. Other people have faced similar issues, and their solution was to disable IPv6 and then reserve the floating IPv4. Another solution is to get a new IPv4. In my case, I host N8N to another server. After mig…

I tested the connection using Coolify terminal, and it gets connected to Google Gemini using the API Key. So, I suppose the issue isn’t the Hetzner VPS, Coolify instance, nor the API Key.

This is the Docker compose file deployed in Coolify: services: n8n: image: docker.n8n.io/n8nio/n8n environment: - SERVICE_FQDN_N8N_5678 - 'N8N_EDITOR_BASE_URL=${SERVICE_FQDN_N8N}' - 'WEBHOOK_URL=${SERVICE_FQDN_N8N}' - 'N8N_HOST=${SERVICE_URL_N8N}' - 'GENERIC_…

The hertzner Ip might be flagged by Google (sometimes the hertzner users have faced that) check if it true, by sending a Bigquerry CURL to google (to debug from your hertzner server): curl -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \ "https://bigquery.googleapis.com/bigquery/v2/projects/YOUR…

Hi @Yo_its_prakash , thank you for your suggestion. I sent two HTTP requests directly from the server, one request to Gemini and the other to BigQuery. These requests can access the API endpoints, no issue at all. So, in short: Accessing directly from the VPS → Success Accessing from Coolify termin…

Hi, have you tried to don’t use n8n via Docker but via nginx (its job is to act as a proxy) ?

Hi @Michel_Morelli , thank you for your advice. I’m not sure how to achieve that in Coolify; might you have further suggestions on how to achieve that? On a side note, I found a similar problem reported as an issue in the N8N repo . The underlying cause of this issue seems to be unclear. I already tr…

In Coolify, I found these proxy settings. Could this be somewhat relevant to your suggestions? [2025-03-02-050451_481x346_scrot] Update: I tested the workflow without resolving the issues with Gemini and/or BQ. There appears to be a problem when sending an HTTP request from N8N. The workflow can…

I’m thinking about migrating from DigitalOcean to HETZNER, is this a problems with HETZNER in general? Is not having the IPv4 what’s causing the problem?

There’s no direct confirmation from Google, but it seems related to Google’s blacklist. Hetzner reuses IP addresses (or so some people say), and some of them are blacklisted by Google. There are many other possibilities, so I think sharing the sources with you is better. Sources: https://www.redd…

Self-hosted N8N on Coolify in a Hetzner VPS can't connect to Google services

Questions

brahimh March 3, 2025, 2:42am 12

Many thanks for sharing
I use google services too.

Did you try using Cloudflare DNS? (As mentioned in one of the sources you shared)

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Self-hosted N8N on Coolify in a Hetzner VPS can't connect to Google services

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