CDN Origin Server Diagnosis

Overview

This skill is used to diagnose CDN back-to-source failures, origin unreachable errors, and other origin-related issues. It queries the CDN domain's origin configuration (origin address, origin type, back-to-source port, back-to-source protocol) via hcloud CLI, and probes origin server connectivity using the Python probe script (scripts/origin_probe.py), helping users identify the root cause of back-to-source failures, such as abnormal origin server services, closed ports, or CDN back-to-source IP ranges not whitelisted.

Key Features:

• Automatically queries and parses CDN origin configuration (configs.sources)
• Supports connectivity probing for all three back-to-source protocols: http / https / follow
• Parses origin_addr, origin_type, http_port, https_port, origin_protocol
• Structured diagnosis report with IP whitelist prompts and remediation suggestions

Tool: hcloud CLI (KooCLI) + Python probe script (scripts/origin_probe.py) Probe Timeout: 10 seconds Core Principle: Read-only diagnosis; no configuration changes are performed