Nginx while ssl handshaking to upstream, In Nginx, a specific location was defined which should load the content from an (external) upstream: location = /uripath { proxy_pass https://external. How I encountered the problem: Update nginx from version 1. While creating NGINX ssl reverse proxy, encountered error 'upstream SSL certificate does not match "<proxy_pass_url> while SSL handshaking to upstream, client' . 28. 18. Nov 12, 2013 · -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am working on setting up an http reverse proxy in front of a pre-packaged jetty server. In this blog, we’ll break down the error, explore common causes, and provide a step-by-step guide to diagnose and fix it. Secure HTTP traffic between NGINX or F5 NGINX Plus and upstream servers, using SSL/TLS encryption. And use proxy_ssl_name "webshop. 10. domain. If it doesn’t, you can double-check the Apache Configuration. 0. cnf was adjusted, the communication from the reverse proxy to the upstream server worked again. 0:4343> of SSL vHost. I try to configure an Nginx server as a reverse proxy so the https requests it receives from clients are forwarded to the upstream server via https as well. Understand common SSL/TLS misconfigurations and how to fix them for secure reverse proxy setups. com/; } When this location was now accessed using a browser or curl, a 502 error would be returned from Nginx. Oct 1, 2010 · Try changing webshop. example. 2 Solutions I’ve tried: map, separate server sections Version of NGINX or NGINX adjacent software (e. A closer look into the debug error logs from this domain would show that there w Dec 10, 2021 · To sum up, the skilled Support Engineers at Bobcares demonstrated how to resolve the Nginx error while SSL handshaking to upstream without any additional trouble. 2 Deployment environment: upstream backends 18 hours ago · A 502 Bad Gateway error means the server received an invalid upstream response. g. Here’s the quick and dirty. Learn the exact causes and step-by-step fixes. If that doesn't work try adding proxy_ssl_server_name on; as well. The IP address in here should match with the one you noted in the previous step. be". 0 to version 1. Dec 31, 2025 · Resolving it requires systematic troubleshooting to identify whether the issue lies with Nginx configuration, upstream server settings, network rules, or SSL certificates. 45:7004 -showcerts CONNECTED (00000003 Feb 5, 2022 · If it loads, take note of the IP address within the <VirtualHost 0. 23. Then behind nginx, i have anohter server running this jetty application, with its own cert Jul 14, 2021 · Nginx reverse proxy error: SSL alert number 47 while SSL handshaking to upstream Validation of the workaround As soon as /etc/ssl/openssl. NGINX Gateway Fabric): 1. Now, head over to the Nginx SSL vHost configuration and take note of the ‘proxy_pass https://0. The jetty server is a pre-configured application, and not very flexible. ?? 新的问题 我将这条配置语句加入到我的 配置文件 中，重启nginx，点击代理地址，结果熟悉的 502 不见了，取而代之 18 hours ago · My issue: When proxying via the upstream module, the Host header is replaced with the upstream name or the name of the server itself. . 0:4343’. I have nginx configured to listen on 443, using its own SSL cert. Here's the configuration that I use: 1 day ago · 后来又去中文社区搜了一下，找了一段解释，摘抄如下： 由于网站启用了 SNI ， Nginx反代默认没有加入 SNI proxy_ssl_server_name on; ，Nginx 无法成功 handshake 上游的 SSL ， 导致 502 Bad Gateway. be:443 to the actual ip. Adding this line after the proxy_pass worked for me. Sep 20, 2025 · Learn what causes the NGINX `SSL_do_handshake () failed` error when connecting to an upstream HTTPS server and how to resolve it. This could be verified using openssl from the reverse proxy again: ck@reverseproxy1:~$ openssl s_client -connect 10.


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