统计多台linux主机的CPU内存swap的使用比例

#!/usr/bin/python

# -*- coding:utf8 -*-

 

import paramiko

import re

from time import sleep

 

linux_info=(

            ['ssoweb12','192.168.5.32'],

            ['ssoweb17','192.168.5.37'],

            ['ssoweb18','192.168.5.38']

            )

 

server_user='root'

server_pw='passw0rd'

server_info={}

 

def cpu_r(cpu_stat):

    # 返回CPU当前的总时间片和空闲时间片信息的数据

    sys_cpu_info_t = re.findall(r'cpu .*\d',cpu_stat)

    cpu_z_str = ' '.join(sys_cpu_info_t)

    cpu_z_list = list(cpu_z_str.split())

    cpu_z_list.remove("cpu")

 

    f_line_a=[]

    for i in cpu_z_list:

        i=int(i)

        f_line_a.append(i)

    total = sum(f_line_a)

    idle = f_line_a[3]

    return total,idle

 

def meminfo_disc(meminfo_r):

    # 返回内存使用信息的一个字典，取值需要 /proc/meminfo 的内容

    aa = re.sub(r' kB','',meminfo_r)

    bb = re.sub(r' +','',aa)

    cc = re.sub(r'\n',':',bb)

    dd = cc.split(":")

    meminfo_d = {}

 

    while len(dd)>1:

        meminfo_d[dd[0]]=dd[1]

        del dd[0:2]

    return meminfo_d

 

for i in linux_info:

    server_id=i[0]

    server_ip=i[1]

    ss = paramiko.SSHClient()

    ss.set_missing_host_key_policy(paramiko.AutoAddPolicy())

 

    ss.connect(server_ip,22,server_user,server_pw)

    stdin,stdout,stderr=ss.exec_command('cat /proc/stat')

    sys_cpu_stat = stdout.read()

 

    stdin,stdout,stderr=ss.exec_command('cat /proc/meminfo')

    meminfo_r = stdout.read()

 

    total_a,idle_a=cpu_r(sys_cpu_stat)

    sleep(3)

    stdin,stdout,stderr=ss.exec_command('cat /proc/stat')

    sys_cpu_stat = stdout.read()

    total_b,idle_b=cpu_r(sys_cpu_stat)

    ss.close()

 

    sys_idle = idle_b - idle_a

    sys_total = total_b - total_a

    sys_us = sys_total - sys_idle

    cpu_a = (float(sys_us)/sys_total)*100

    cpu_b = str(round(cpu_a,2))+'%'

 

    meminfo_key = meminfo_disc(meminfo_r)

 

    mem_kx = int(meminfo_key.get('MemTotal'))-int(meminfo_key.get('MemFree'))-int(meminfo_key.get('Buffers'))-int(meminfo_key.get('Cached'))

    mem_kx_l = (float(mem_kx)/int(meminfo_key.get('MemTotal')))*100

    mem_kx_lv = str(round(mem_kx_l))+'%'

 

    swap_user = float(meminfo_key.get('SwapTotal'))-int(meminfo_key.get('SwapFree'))/float(meminfo_key.get('SwapTotal'))

    swap_user_l = (float(meminfo_key.get('SwapTotal'))-int(meminfo_key.get('SwapFree')))/int(meminfo_key.get('SwapTotal'))*100

    swap_user_lv = str(round(swap_user_l))+'%'

 

    server_info_list=[server_id,server_ip,cpu_b,mem_kx_lv,swap_user_lv]

    server_info[server_id]=server_info_list

    # 输出一个字典

 

print server_info