A simple monitoring system written in Python

This article mainly introduces the python written a simple monitoring system, this article explains the detailed coding steps, and give the corresponding implementation code, need friends can refer to the following

There are many open source monitoring systems on the market: Cacti, Nagios, Zabbix. Doesn't feel like I need it, why don't you do it yourself?

Using Python's two-hour manual to masturbate a simple monitoring system, to share with you, hoping to inspire you

First Database Building table

Set up a database "Falcon", the table statement is as follows:

?

1 2 3 4 5 6 7 8 9 10 11

CREATE TABLE ' stat ' (' id ' int ' unsigned NOT NULL auto_increment, ' host ' varchar (256) DEFAULT null, ' mem_free ' int (11) Default NULL, ' Mem_usage ' int (one) default null, ' Mem_total ' int (one) default null, ' LOAD_AVG ' varchar (128) default NULL, ' t IME ' bigint (one) default NULL, PRIMARY key (' ID '), key ' host ' (' Host ' (255)) Engine=innodb auto_increment=0 default Charse T=utf8;

First we design a Web service that implements the following functions:

1. Complete the Monitoring page display

2. Accept the data submitted by post

3. Provide JSON data get interface

The directory structure is as follows:

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 The

This template page is an example of the Highstock I copied, mon.html

For simplicity, we'll just show mem_usage information to the page.

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 This is the

; > <title>jb51.net</title> <! DOCTYPE html>

The Web presentation page is complete and running:

Python flask_web.py is listening on port 8888.

We need to do an agent to collect the data and upload the database.

moniitems.py

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26-27--28 29---30 31--32 33 34 35 36 37 38-39 40 41 42 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74-75

#!/usr/bin/env python import inspect import time import urllib, URLLIB2 import JSON imp ORT socket   Class Mon:def __init__ (self): Self.data = {}   def getTime (self): return str (int (time.time ()) + 8 * 3600)   def gethost (self): return Socket.gethostname ()   def getloadavg (self): with open ('/proc/loadavg ') as L Oad_open:a = Load_open.read (). Split () [: 3] return ', '. Join (a)   def getmemtotal (self): with open ('/proc/meminfo ') as mem_open:a = Int (Mem_open.readline (). Split () [1]) return a/1024   def getmemusage (self, nobuffercache=true): If no Buffercache:with open ('/proc/meminfo ') as Mem_open:t = Int (Mem_open.readline (). Split () [1]) F = Int (Mem_open.readline () . Split () [1]) B = Int (Mem_open.readline ()). Split () [1]) C = Int (Mem_open.readline (). Split () [1]) return (T-F-B-C)/1024 Else : With open ('/proc/meminfo ') as mem_open:a = Int (Mem_open.readline (). Split () [1])-Int (Mem_open.readline (). Split () [1]) return a/1024   def getmeMfree (self, nobuffercache=true): If Nobuffercache:with open ('/proc/meminfo ') as Mem_open:t = Int (Mem_open.readline (). Split () [1]) F = Int (Mem_open.readline (). Split () [1]) B = Int (Mem_open.readline (). Split () [1]) C = Int (Mem_open.readline () . Split () [1]) return (f+b+c)/1024 Else:with open ('/proc/meminfo ') as Mem_open:mem_open.readline () a = Int (mem_open.readl INE (). Split () [1]) return a/1024   def runallget (self): #自动获取mon类里的所有getXXX方法, use XXX as value for key,getxxx (), Construct dictionary For fun in inspect.getmembers (self, Predicate=inspect.ismethod): if fun[0][:3] = = ' Get ': self.data[fun[0][3:]] = fun[1] () Return self.data   If __name__ = = "__main__": While true:m = Mon () data = M.runallget () print data req = Urllib2. Request ("http://3lian.net:8888", Json.dumps (data), {' Content-type ': ' Application/json '}) F = Urllib2.urlopen (req) Response = F.read () print response F.close () Time.sleep (m)     nohup python moniitems.py >/dev/null P;1 & run up

Visit the http://jb51.net:8888 to see our monitoring data: The effect is as follows