After adding Cloudflare signed origin certificate to my nginx, I am getting Error 523.
If I change the SSL setting back to flexible, it works fine. If I don’t proxy through Cloudflare, my site works fine, and the certificate from Cloudflare is served (but not accepted by browsers, which is expected).
So nginx is able to use the certificate, its only when connecting from Cloudflare to my server there seems to be an issue.
Any pointers to resolving this issue?