How to resolve connection timeout issue with nginx reverse proxy?

When using nginx as a reverse proxy, if there is a connection timeout, you can try the following methods to resolve the issue:

1. Adjusting the timeout settings of nginx: In the nginx configuration file, one can increase or modify several parameters to adjust the timeout settings.
2. proxy_connect_timeout: sets the timeout period for establishing a connection with the backend server.
3. proxy_read_timeout: Configures the timeout duration for reading responses from the backend server.
4. proxy_send_timeout: Sets the timeout for sending requests to the backend server.
5. client_header_timeout: Sets the timeout for receiving client request headers.
6. client_body_timeout: Specifies the timeout for receiving client request bodies.
7. Set the timeout for keeping the connection active between the client and backend server.
8. The timeout settings may be adjusted accordingly to ensure successful connection based on specific circumstances.
9. Increase the number of connections to the back-end servers: If the number of connections to the back-end servers has reached the limit, it may result in connection timeouts. This issue can be resolved by increasing the number of connections to the back-end servers.
10. Checking the performance of the backend server is important. Poor performance could lead to connection timeouts. This issue can be resolved by optimizing the configuration and performance of the backend server.
11. Check the network status: A connection timeout may be caused by network issues. You can check if the network connection is normal, try restarting the network equipment, or contact the network administrator to resolve the issue.
12. Try using different reverse proxy software: If the above methods don’t work, consider using other reverse proxy software like HAProxy or Apache.

I hope the above methods can assist you in resolving the issue of nginx reverse proxy connection timeout.