When I installed WordPress using Docker and then used Nginx Proxy Manager for Proxy, I got a 502 Bad Gateway – openresty mistake. This is how I solved it.
I had an installation af Portainer and Nginx Proxy Manager, where I using Docker installed WordPress. But when I used Nginx Proxy Manager to point the subdomain wp.server.dk against the WP installation, I got this mistake:
It took my a while to figure out where the mistake was, so in this article I will share the solution with you.
First I want to show my settings in Proxy Host for the WordPress Container:
On the SSL tab I choose to create a Lets Encrypt certificate, and initially I therefore thought it was logically to choose https as Scheme. However, that made the 502 Bad Gateway – openresty mistake. The solution was therefore to change the scheme back to http – even though you have installed a Lets Encrypt certificate and will access the site with https://wp.server.dk.
So when creating a proxy for WordPress in Nginx Proxy Manager remember to:
- Always choose http as Scheme.
- Always use the port of the container (80) not the local port.
I hope this could help other people in the same situation.
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