Nginx reverse proxy causing infinite loop - redirect

Question

I have the following in my Nginx site config file:
server {
listen 80 default_server;
listen [::]:80 default_server ipv6only=on;
root /usr/share/nginx/html;
index index.php index.html index.htm;
server_name example.com;
location / {
try_files $uri $uri/ /index.php?q=$uri&$args;
}
error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}
}
server {
listen 80;
server_name example2.com;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://localhost/page-1/;
}
}
The issue only seems to occur when I add the proxy_set_header Host $host; line. It appears that the $host variable creates a redirect loop and the GET request from the error server logs goes something like this ...page-1/page-1/page-1/page-1... with the server responding with an internal error 500.
I'd be really grateful if anyone could tell me what I'm doing wrong. Many thanks in advance!

Answer 1

I had the same issue, and as suggested by Alexey Ten, the solution is to remove the Host header.