Nginx监控请求lua脚本

来源：互联网发布：windows7是什么软件编辑：程序博客网时间：2024/06/06 10:39

当应答状态码不是200时，通过udp向服务器发送报告。

monitor.lua

-- -- Config Nginx.conf:---- set $str $uri;-- content_by_lua_file;-- -- location /proxy {--    proxy_pass http://{your-server}$str;-- }------ Extends int to 4 byte--function pad32bit(num)    local hex = ""    local rem = num    for i=1,4 do      local bit = rem % 256      rem = math.floor(rem /256)      hex = hex .. string.char(bit)    end    return hexendlocal url = ngx.var.urilocal res = ngx.location.capture("/proxy", {vars = {str = url} })-- Responsengx.say(res.body)-- Send udp messageif res.status ~= 200 then-- Protocol-- Length | version | Top-Level no (4) | Second-Level no | json body  --local mydata = require "mydata"  --local udpsock = mydata:socket()  local udpsock = ngx.socket.udp()  udpsock:settimeout(0)  local ok, err = udpsock:setpeername("224.3.29.71", 10000)  local body = "host:" .. ngx.var.host  .. ", url:" .. url .. ", status:" .. res.status  local leng = 4 + 3 + string.len(body)  local msg = pad32bit(leng) .. "\1\4\1" .. body  ngx.say("<!--" .. msg .. "-->")  local ok, err = udpsock:send(msg)end

Nginx.conf

    upstream web{         server 127.0.0.1:8080;         server 127.0.0.1:8081;    }    server {        listen       80;        server_name  localhost;        #charset koi8-r;        location / {            root   html;            index  index.html index.htm;            set $str $uri;            content_by_lua_file /home/hailin/monitor.lua;        }        location /proxy {             resolver 8.8.8.8;             proxy_pass http://web$str;        }

--local mydata = require "mydata"
--local udpsock = mydata:socket()

这种方式只能共享基本类型，不能共享socket