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Created August 14, 2014 12:18
What would you like to do?
Full request/response body logging in nginx
http {
log_format bodylog '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent" $request_time '
'<"$request_body" >"$resp_body"';
lua_need_request_body on;
set $resp_body "";
body_filter_by_lua '
local resp_body = string.sub(ngx.arg[1], 1, 1000)
ngx.ctx.buffered = (ngx.ctx.buffered or "") .. resp_body
if ngx.arg[2] then
ngx.var.resp_body = ngx.ctx.buffered
server {
location / {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_redirect off;
access_log /var/log/nginx/server.log bodylog;
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@simonecogno yes, it requires.

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nginx: [emerg] unknown "req_headers" variable
the version of my Nginx on Ubuntu 16.04 is 1.10.3, installed with 'apt-get install nginx-extras'

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nmishr commented Mar 8, 2019

Thanks Eugene, your working example helped me figure out what my issue was. Basically, I had a leftover content_by_lua_block { …} which was overwriting the response from the remote server

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