# Alibabacloud Oss Cdn Origin Config Diagnosis

> Read-only diagnostics for CDN back-to-origin to OSS.

Read-only diagnostics for CDN back-to-origin to OSS. Use when CDN
fetching from an OSS origin fails or looks wrong: back-to-origin 403
on a private bucket, traffic bypassing the CDN straight to OSS, wrong
origin host or port, or a CDN domain that is offline or never
configured. Checks configuration and attributes the cause; never
changes any CDN or OSS setting.
Triggers: "CDN back-to-origin 403", "private bucket CDN origin",
"traffic bypasses CDN", "origin host misconfigured", "CDN domain
offline", "origin port check", "OSS origin authorization".
Do NOT use for refresh/preload tasks (use
alibabacloud-cdn-refresh-preload), CDN traffic anomaly analysis (use
alibabacloud-cdn-traffic-anomaly), OSS endpoint selection or
internal-endpoint errors (use
alibabacloud-oss-endpoint-internal-diagnosis), or OSS billing (use
alibabacloud-oss-billing-diagnosis).

- Page: https://ss33.ai/skills/aliyun/alibabacloud-oss-cdn-origin-config-diagnosis-65545143455
- Publisher: aliyun
- Category: [Software Development](https://ss33.ai/skills/category/software-development-t44z8z) › [DevOps & cloud](https://ss33.ai/skills/category/software-development-t44z8z/devops-and-cloud-unkt50)
- Source: https://github.com/aliyun/alibabacloud-aiops-skills/blob/32598d65d9643343f0580393355f1e4803fc5007/skills/others/cseskillshub/alibabacloud-oss-cdn-origin-config-diagnosis/SKILL.md

## Skill

This skill's licence does not allow redistribution, so the store does not serve its text. Get it from the author: https://github.com/aliyun/alibabacloud-aiops-skills/blob/32598d65d9643343f0580393355f1e4803fc5007/skills/others/cseskillshub/alibabacloud-oss-cdn-origin-config-diagnosis/SKILL.md