Upstream SUSE server showed this line in the logs:
"No issuer certificate for certificate in certification path found".
This was solved by entering the full chain of certificates (root, intermediate, server) into the crt file that the proxy presents to the upstream server to identify itself.
The server directive line in nginx;
proxy_ssl_certificate /etc/nginx/ssl/public.crt;
"No issuer certificate for certificate in certification path found".
This was solved by entering the full chain of certificates (root, intermediate, server) into the crt file that the proxy presents to the upstream server to identify itself.
The server directive line in nginx;
proxy_ssl_certificate /etc/nginx/ssl/public.crt;