Background to the issue

When you are using Nginx for reverse proxying, sometimes you will encounter a 404 error, which is because Nginx cannot find the corresponding resource. This problem usually occurs during the process of configuring a reverse proxy, resulting in users not being able to access the required resources properly, negatively affecting the stability of the website and user experience.

cure

To resolve the Nginx 404 reverse proxy issue, you need to note the following:

1. Inspection of proxy targets

First, you need to make sure that your reverse proxy target is configured correctly. Check the proxy_pass directive in the Nginx configuration file to make sure it is pointing to the correct target server address and port. Example:

location / {
proxy_pass http://your_upstream_server.
}

Make sure "your_upstream_server" is the correct destination server address.

2. Checking the target server

Next, you also need to check if the target server is functioning properly. Visit the address of the target server and make sure that it is responding to requests properly. If the target server is down or inaccessible, then Nginx will give you a 404 error.

3. Checking the path of the document

Finally, you need to check if the file path is correct. Sometimes, 404 errors occur because Nginx is unable to find the corresponding file, either because the path is misconfigured or the file does not exist. Make sure that the file path is under Nginx's root directive and that you have read permissions to the file.

By checking and tweaking the above points, you should be able to resolve the Nginx 404 reverse proxy issue and ensure that users are able to access the required resources properly. Be sure to back up your Nginx configuration file before making any configuration changes to avoid irreparable problems.