nginx 反代 https 源站，为啥 upstream 源站变成 https://ip/XXX

[liuyinltemp]

菜鸟求助，nginx 反代 https://AAA.com 页面打开为空，如果直接反代 http://AAA.com 则完全正常； 看错误代码

[error] 5790#5790: *15933 upstream prematurely closed connection while reading upstream, client: 127.0.0.1, server: m.shss.pw, request: "GET /bbs/index.php HTTP/2.0", upstream: "https://数字 IP:443/bbs/index.php", host: "BBB.com", referrer: "https:/BBB.com/"

https://AAA.com 是 ke 可以打开的，但是 https://数字 IP:443/ 显然是无法打开的，所以报错

请问这种情形下 nginx 如何修改配置？

[liuyinltemp]

curl: (60) SSL certificate problem: unable to get local issuer certificate
More details here: https://curl.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.

[liuyinltemp]

又查了一下，应该是 vps 下访问源站有问题，但是证书又是对的。

[liuyinltemp]

应该是源站的证书缺失了中间证书，这种情况有啥办法

[liuyinltemp]

源站补齐中间证书就好了