Openresty nginx 重新加载不起作用？（更新的变量在lua文件中为零）

Question

我目前正在将一些新变量传递到我的 lua 文件中，似乎这些新变量是nil当我注销它们并删除了名为的旧变量时saveFileRootPath，但旧变量仍然可以被记录。

这是我的 nginx conf 的一部分：

location /fileupload {
            if ($request_method = 'OPTIONS') {
              add_header 'Access-Control-Allow-Origin' '*';
              add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
              #
              # Custom headers and headers various browsers *should* be OK with but aren't
              #
              add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,fileheader';
              #
              # Tell client that this pre-flight info is valid for 20 days
              #
              add_header 'Access-Control-Max-Age' 1728000;
              add_header 'Content-Type' 'text/plain; charset=utf-8';
              add_header 'Content-Length' 0;
              return 204;
            }
            if ($request_method = 'POST') {
              add_header 'Access-Control-Allow-Origin' '*';
              add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
              add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,fileheader';
              add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
            }
            if ($request_method = 'GET') {
              add_header 'Access-Control-Allow-Origin' '*';
              add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
              add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,fileheader';
              add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
            }
            default_type text/html;
            set $fileSaveListingPath "C:\\Services\\openresty\\html_ecomm\\files\\listing";
            set $fileSaveDetailPath "C:\\Services\\openresty\\html_ecomm\\files\\detail";
            set $fileSaveZoomPath "C:\\Services\\openresty\\html_ecomm\\files\\zoom";
            content_by_lua_file lua/fileupload.lua;
        }

添加了 3 个新变量fileSaveListingPath，fileSaveDetailPath&fileSaveZoomPath记录为nil.

删除了旧变量fileSaveRootPath，但仍然可以记录。

我感觉也许有缓存？缓存已关闭，据我所知。

这是我的 lua 文件的上半部分：

local http = require "resty.http"
local upload = require "resty.upload"
local cjson = require "cjson"
local saveRootPath = ngx.var.fileSaveRootPath
ngx.log(ngx.ERR, "TEST: "..ngx.var.fileSaveRootPath )
local chunk_size = 4096
local form, err = upload:new(chunk_size)
if not form then
    ngx.log(ngx.ERR, "failed to new upload: ", err)
    ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
end

form:set_timeout(1000)

function file_exists(name)
   local f=io.open(name,"r")
   if f~=nil then io.close(f) return true else return false end
end

正如您从代码中看到的，ngx.var.fileSaveRootPath我尝试记录它，但由于某种原因它仍然可以记录。顺便说一句，这是来自服务器端的，所以我不想简单地重新启动整个服务器。

PS： nginx -s reload对我不起作用。

一些错误日志：

2018/03/12 11:42:45 [info] 10660#10372: *4506 client closed connection while waiting for request, client: 124.13.241.136, server: 0.0.0.0:16001
2018/03/12 11:44:40 [error] 10660#10372: *4508 lua entry thread aborted: runtime error: ./lua/fileupload.lua:9: attempt to concatenate field 'fileSaveListingPath' (a nil value)
stack traceback:
coroutine 0:
    ./lua/fileupload.lua: in function <./lua/fileupload.lua:1>, client: 124.13.241.136, server: db.hkltd.com, request: "POST /fileupload/ HTTP/1.1", host: "xxx.com:16003", referrer: "http://localhost:3000/catalogmanagement/8868"
2018/03/12 11:45:43 [info] 10660#10372: *4514 client closed connection while waiting for request, client: 124.13.241.136, server: 0.0.0.0:16003
2018/03/12 11:58:16 [error] 10660#10372: *4516 lua entry thread aborted: runtime error: ./lua/fileupload.lua:9: attempt to concatenate field 'fileSaveListingPath' (a nil value)
stack traceback:
coroutine 0:
    ./lua/fileupload.lua: in function <./lua/fileupload.lua:1>, client: 124.13.241.136, server: xxx.com, request: "POST /fileupload/ HTTP/1.1", host: "xxx:16003", referrer: "xxx.com:16003/catalogmanagement/8868"

Answer 1

在这里找到了答案。

这部分：The immediate consequence is that you can't use custom variables in an http block.

似乎我尝试设置自己的自定义变量，但实际上你不能在 nginx conf 文件中执行此操作。

我的解决方案是在 lua 文件中设置我的位置，一切都很好。

附：

nginx -s reload正常工作。我添加了几个服务器条目，重新加载工作正常。