Error: nginx - upstream sent too big header while reading response header from upstream

You get the following error in the nginx log:

upstream sent too big header while reading response header from upstream

 

Solution

Modify your nginx configuration and change/set the following directives:

proxy_buffer_size   128k;
proxy_buffers   4 256k;
proxy_busy_buffers_size   256k;

Restart nginx afterwards:

/etc/init.d/nginx restart

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