openresty配置request&respone输出到log
本机已安装openresty,并且配置正常访问。
需要openresty加载lua,然后把request和respone输出到日志里。
参考如下:

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# 添加以下内容进入openresty的server_name具体监听的conf里
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
end
';

set $req_header "";
set $resp_header "";
header_filter_by_lua '
local h = ngx.req.get_headers()
for k, v in pairs(h) do
ngx.var.req_header = ngx.var.req_header .. k.."="..v.." "
end
local rh = ngx.resp.get_headers()
for k, v in pairs(rh) do
ngx.var.resp_header = ngx.var.resp_header .. k.."="..v.." "
end
';

修改openresty主文件的nginx.conf配置文件,修改log格式配置

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log_format json_combined escape=json '{"@timestamp":"$time_iso8601",'
'"@source":"$server_addr",'
'"@nginx_fields":{'
'"remote_addr":"$remote_addr",'
'"remote_user":"$remote_user",'
'"body_bytes_sent":"$body_bytes_sent",'
'"request_time":"$request_time",'
'"status":"$status",'
'"host":"$host",'
'"uri":"$uri",'
'"server":"$server_name",'
'"port":"$server_port",'
'"protocol":"$server_protocol",'
'"request_uri":"$request_uri",'
'"request_body":"$request_body",'
'"request_method":"$request_method",'
'"http_referrer":"$http_referer",'
'"body_bytes_sent":"$body_bytes_sent",'
'"http_x_forwarded_for":"$http_x_forwarded_for",'
'"http_user_agent":"$http_user_agent",'
'"upstream_response_time":"$upstream_response_time",'
'"upstream_addr":"$upstream_addr",'
'"req_header":"$req_header",'
'"req_body":"$request_body",'
'"resp_header":"$resp_header",'
'"resp_body":"$resp_body"}}';

修改完成后执行测试,并且重启生效

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openresty -t
openresty -s reload

参考链接:
Logging request & response body and headers with nginx
Is it possible to log the response data in nginx access log?
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