Hi,

I have some problem with access log combined with X-Accel-Redirect
requests. In my case I have Nginx set up as load-balancer to group of
application servers. These servers return some special header in every
request - I need to log value of this special header (lets call it
'X-user') in access log - also I do not want to expose this header to
the world (proxy_hide_header helps here).

Everything seems to work, but when there is X-Accel-Redirect request I
have empty field in access log because of subrequest
($upstream_http_x_special is cleared because of subrequest, if I
understand this mechanism correctly). How to make this work for every
request?

Here is my config:

http {
log_format extended '$request $upstream_http_x_user';
access_log /var/log/nginx/access.log extended;

...

server {
listen 80;

location / {
proxy_pass http://backend;
proxy_hide_header X-User;
}

location /files {
internal;
proxy_pass http://filestore;
}
}
}


Cheers,

--
Kamil Gorlo

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