Nginx监控请求lua脚本

文章由LinuxBoy分享于2019-03-24 08:03:00热评（640）

Nginx监控请求lua脚本

当应答状态码不是200时，通过udp向服务器发送报告。

monitor.lua

[plain]

-- 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 hex

end

local url = ngx.var.uri

local res = ngx.location.capture("/proxy", {vars = {str = url} })

-- Response

ngx.say(res.body)

-- Send udp message

if 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("")

local ok, err = udpsock:send(msg)

end

Nginx.conf

[plain]

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;

}

推荐文章：

Nginx监控请求lua脚本