Cloudflare: Error 522 Connection timed out (Origin handshake failed)
Error 522 Ray ID: 89ab32c0d1e2 • Connection timed out • Cloudflare attempted to connect to your origin server but received no TCP response within 15 seconds.
Immediate Remediation
bash
Check origin firewall (iptables/ufw) allows Cloudflare IP ranges (https://www.cloudflare.com/ips/) on ports 80/443 and verify web server is running.
Root Cause Analysis
Encountered in Cloudflare when standard configuration or runtime constraints are violated.
Verification & Guardrails
- Verify dependencies and runtime version compatibility.
- Ensure clean build artifact state.
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