N8N 502 error, intermittent issues

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XxiaokoDEVELOPER1d ago

Hello, following the suggestion from Zeabur AI below, please help me downgrade to n8n 1.123.6 (stable version). Thank you.

📋 Problem Report Summary

Issue: n8n service intermittent 502 Bad Gateway error

Current Version: n8n 2.2.6 (latest)

Symptoms:

Service status shows RUNNING, but intermittently returns 502 errors
Intermittent, not a continuous failure
Resource usage is normal (Memory, CPU, and latency are within normal ranges)

Root Cause: n8n 2.0+ versions have stability issues on Zeabur

Suggested Solution: Downgrade to n8n 1.123.6 (stable version)

1 Reply

CCanEMPLOYEE14h ago

Hello,

We have reviewed your service logs and found that the 502 error was caused by n8n being unable to resolve the PostgreSQL DNS name (error message: getaddrinfo EAI_AGAIN postgresql), which led to a database connection failure. This is an intermittent DNS resolution issue and is not directly related to the n8n version.

Currently, both your n8n and PostgreSQL services are running normally. If the issue occurs again, please try restarting the n8n service. If it persists, please reply to let us know so we can investigate further.

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📋 Problem Report Summary

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