nginx-luaHow to log request headers
log_format log_hdrs '[$time_local] "$request" "$req_hdr"';
server {
location / {
set_by_lua_block $req_hdr {
return ngx.req.get_headers()['Accept']
}
access_log /var/log/nginx/lua.log log_hdrs;
}
}ctrl + clog_formatspecify custom log format to log request body | log_hdrsaccess log format name with request header |
$req_hdrthis variable will contain specific request header value | set_by_lua_blocknginx-lua module directive that sets specified variable with a result from Lua code |
ngx.req.get_headers()returns table with request headers | Acceptsample HTTP header to log value of |
access_logset access log path and format | /var/log/nginx/lua.logpath to access log |
Usage example
curl localhost
tail /var/log/nginx/lua.logoutput
[22/Mar/2022:16:26:08 +0000] "GET /hdrs HTTP/1.1" "*/*"More of Nginx Lua
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