python获取服务器信息

# -*- coding: utf-8 -*-

from __future__ import division
import commands
import socket

def server_status(hostname):
    a,disk = commands.getstatusoutput("fdisk -l|grep GB|awk '{print  $2,$3,$4}' |tr '\n' ' '")
    cpu,processor = commands.getstatusoutput("grep -c 'processor' /proc/cpuinfo")

    Status = { "Hostname":hostname ,
         "CPU_process":processor,
         "Disk":disk
              }
    print Status

def mem_stat():
        mem = {}
        f = open('/proc/meminfo')
        lines = f.readlines()
        f.close()
        for line in lines:
                name = line.split(':')[0]
                var = line.split(':')[1].split()[0]
                mem[name] = long(var)
        Mem = ((mem['MemFree'] + mem['Buffers'] + mem['Cached']) / mem['MemTotal']) * 100
    a,MemTotal = commands.getstatusoutput("awk  'NR==1{print $2}' /proc/meminfo")
        free = ('%0.2f%%'%Mem)
    mem = { "Mem_free":free,"Mem_Total":MemTotal}
    print mem

def cpu_load():
    loadavg = {}
    f = open("/proc/loadavg","r")
        con = f.read().split()
        f.close()
        loadavg['lavg_1']=con[0]
        loadavg['lavg_5']=con[1]
        loadavg['lavg_15']=con[2]
        loadavg['nr']=con[3]
        loadavg['last_pid']=con[4]
        print loadavg

def io():
    a,iowait = commands.getstatusoutput("iostat|awk 'NR==4{print $4}'")
    iostat = { "iowait":iowait }

    print iostat

if __name__ == '__main__':
    server_status(socket.gethostname())
    mem_stat()
    cpu_load()
    io()