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Origin Site Status Detection When Alibaba Cloud CDN Is Used

Last Updated: Dec 27, 2017

Checking the CNAME switching status:

Run the dig command in Linux or the nslookup command in DOS:

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Checking the origin site access status:

When an error occurs during access to a website, you can direct the access to the origin site to check whether the origin site returns a response. To do this, you can use the command line in Linux or modify the hosts file to always direct access requests to the origin site. Access through Google Chrome is recommended, which provides a developer tool (Ctrl+Alt+I) for you to check HTTP request headers and response headers:

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Request headers and response headers of the origin site:

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Request headers and response headers of a Alibaba Cloud CDN node:

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