WordPress » WordPress Behind SSL and NGINX Reverse Proxy

h1. Wiki

If WordPress is unable to determine when requests are made over HTTPS, causing it to be incapable of serving HTTPS-specific content. 

Web browsers nowadays usually prohibit loading insecure content within pages that are accessed via HTTPS, which results in predictable issues.

The the fix is in wp-config.php add the following,

<pre>

if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {

  $_SERVER['HTTPS'] = 'on';

} 

</pre>

And in the NGINX config Add,

<pre>

server {

    listen 443;

    server_name blog.ldev.app;

    ssl on;     ssl_certificate /etc/pve/local/nginx/ldev-ssl.pem;

    ssl_certificate_key /etc/pve/local/nginx/ldev-ssl.key;

    proxy_redirect off;

    location / {

        proxy_set_header        Host $host:$server_port;

        proxy_set_header        X-Real-IP $remote_addr;

        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_set_header        X-Forwarded-Proto $scheme;

        proxy_pass http://*YOUR IP AND PORT*;

    }

}

</pre>

If your using Nginx Proxy Manager point to the root dir in Custom locations, and in the Advanced tab, use the Custom Nginx Configuration below 

<pre>

proxy_set_header        Host $host:$server_port;

proxy_set_header        X-Real-IP $remote_addr;

proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header        X-Forwarded-Proto $scheme; 

</pre>