Ali Cloud Virtual Machine uses Baidu Cloud to accelerate the emergence of origin server 502
Many customers report that when using Baidu Cloud Acceleration, a 502 error will appear on the website. After testing, the solution is as follows:
Put the Baidu Cloud IP segment into the Pagoda Firewall whitelist. The Baidu Cloud IP segment can be found here:
Open the Baota Firewall, find the whitelist IP, and import the Baidu Cloud Acceleration Node Map IP.
After importing, some websites still couldn't be opened, and 502 still appeared. After in-depth investigation, it was found that Alibaba Cloud's cloud shield security management blocked it. You need to go to Cloud Shield to release the ip, click the Add button, select your own server, and fill in the source IP and enter 0.0.0.0 to save. At this step, 502 will be solved.
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