遠程簡單地得到每臺服務器的cpu與memory使用狀況

須要遠程簡單地得到每臺服務器的cpu與memory使用狀況，用python寫了一個腳本，發佈一個http端口，當瀏覽器連上時，以json格式提供。

用curl鏈接時輸出：

#curl localhost:9999
{"cpu": 10, "mem": 50}

 代碼以下：

import json
import os
import shutil
import subprocess
import sys
import time
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
from io import BytesIO
from SocketServer import ThreadingMixIn
from threading import Thread

cpu_mem_info={'cpu':0,'mem':0}

def read_cpu_usage():
	with open('/proc/stat','r') as f:
		line = f.readline()
		fields = line.split()
		total = long(fields[1])+long(fields[2])+long(fields[3])+long(fields[4])+long(fields[5])+long(fields[6])+long(fields[7])
		used = long(fields[1])+long(fields[2])+long(fields[3])
		print(used,total)
		return (used,total)

def cpu_monitor():
    global cpu_mem_info
    while True:
	(old_used,old_total) = read_cpu_usage()
	time.sleep(3)
	(new_used,new_total) = read_cpu_usage()
        usage = (new_used-old_used)*100/(new_total-old_total)
        cpu_mem_info['cpu'] = usage
        print("cpu_monitor:{0}({1})".format(usage,time.asctime()))


def read_mem_usage():
	with open('/proc/meminfo','r') as f:
		line = f.readline()
		fields = line.split()
		total = long(fields[1])
		line = f.readline()
		fields = line.split()
		used = long(fields[1])
		return used*100/total

def mem_monitor():
    global cpu_mem_info
    while True:
	usage = read_mem_usage()
        cpu_mem_info['mem'] = usage
        print("mem_monitor:{0}({1}".format(usage,time.asctime()))
        time.sleep(3)

class CpuMemServerHandler(BaseHTTPRequestHandler):
    global cpu_mem_info
    def do_GET(self):
        self.send_head()
        f = BytesIO(json.dumps(cpu_mem_info).encode())
        f.seek(0)
        shutil.copyfileobj(f,self.wfile)

    def send_head(self):
        self.send_response(200)
        self.send_header("Content-type",'text/html')
        self.end_headers()

class CpuMemServer(ThreadingMixIn,HTTPServer):
    pass

if __name__ == '__main__':
    cpu_thread = Thread(target=cpu_monitor,args=())
    cpu_thread.setDaemon(True)
    cpu_thread.start()
    mem_thread = Thread(target=mem_monitor,args=())
    mem_thread.setDaemon(True)
    mem_thread.start()
    server = CpuMemServer(('',9999),CpuMemServerHandler)
    server.serve_forever()

https模式？

####.....

server = CpuMemServer(('',9999),CpuMemServerHandler)
server.socket = ssl.wrap_socket(server.socket,keyfile="mykey.key",certfile="mycert.crt",server_side=True)
server.serve_forever()