Otdfbt

I have two VPS running. One is running HAProxy and another one is running WordPress. Both VPS has private networking enabled and I can curl the WordPress site fine from HAProxy server using its private IP address.

Here is URL settings for my WordPress site:

The HAProxy is doing SSL termination in this case because I'm planning to install more WordPress sites later with the following URLs:

• my-website.com/blog (WordPress #1)


• my-website.com/foo (WordPress #2)


• my-website.com/bar (WordPress #3)

Here is my config for HAProxy.

global
 # default global config goes here
 maxconn 2048
 tune.ssl.default-dh-param 2048

defaults
 log global
 mode http
 option forwardfor
 option http-server-close
 option httplog
 option dontlognull
 timeout connect 5000
 timeout client 50000
 timeout server 50000
 errorfile 400 /etc/haproxy/errors/400.http
 errorfile 403 /etc/haproxy/errors/403.http
 errorfile 408 /etc/haproxy/errors/408.http
 errorfile 500 /etc/haproxy/errors/500.http
 errorfile 502 /etc/haproxy/errors/502.http
 errorfile 503 /etc/haproxy/errors/503.http
 errorfile 504 /etc/haproxy/errors/504.http
 stats enable
 stats uri /stats
 stats realm Haproxy Statistics
 stats auth xxx:xxx

frontend my-wordpress-frontend
 bind *:443 ssl crt /etc/ssl/private/my-website.com.pem
 option http-server-close
 http-request set-header X-Forwarded-Proto https if ssl_fc 
 acl blog path_beg /blog
 acl wpadmin path_beg /wp-
 acl blog_search query -m reg ^s=.*$
 acl blog_preview query -m reg ^p=.*$
 acl root path /
 redirect location https://my-website.com/blog/ if root
 use_backend my-wordpress-backend if blog OR blog wpadmin OR blog blog_search OR blog blog_preview
 default_backend my-wordpress-backend

backend my-wordpress-backend
 redirect scheme https if ! ssl_fc 
 reqrep ^([^ :]*) /blog/(.*) 1 /2
 reqrep ^([^ :]*) /blog/wp-admin/(.*) 1 /2
 cookie SERVERID insert indirect nocache
 server www-1 private_ip_address:80 check cookie

Everything looks fine except one thing. I'm able to see the login page at https://my-website.com/blog/wp-login.php. But, after I login, it redirects me to https://my-website.com/wp-admin.

This is not what I want. I was expecting to get https://my-website.com/blog/wp-admin.

I added this to my wp-config.php but it didn't help:

// Start custom config ---
define( 'FORCE_SSL_ADMIN', true );
define('FORCE_SSL_LOGIN', true);
if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')
$_SERVER['HTTPS']='on';
// End custom config ---

/** Sets up WordPress vars and included files. */
require_once ABSPATH . 'wp-settings.php';

Did I miss something here? What is wrong here?

You configured the WordPress base URL with https://example.com/. You should be able to go manually to https://example.com/blog/wp-admin/ after logging in. Then configure the base URL properly (https://example.com/blog/) in the general settings of WordPress.

If that doesn't work you can manually configure the URL in the database, the setting is in the table wp_options.