python通过ssh-powershell监控windows的方法

对于服务器的监控来说，监控linux不管是自己动手写脚本还是用一些开源的工具比如nagios，zenoss什么的。但毕竟还是有些公司有windows做服务器的，相对linux来说，windows没有方便的shell，cmd下提供的命令对于监控来说远远没有linux方便。但是现在windows上如果安装了powershell（win7，2008自带），就比以前方便多了，linux上的命令基本都能在powershell里执行，比如查看进程还是ps.

自己封装了一个python通过ssh（通过pexpect模块）调用powershell的脚本，里面包快ps，netstat，ping检测，查看硬盘，cpu信息和负载，内存信息。通过创建ssh_win32类对象，然后调用它的方法，返回的都是解析好的python对象。

ssh_powershell.py：

#! /usr/bin/env python
# -*- coding: utf-8 -*-
import re
from pexpect import *
class ssh_win32:
def __init__(self, user, host, password=None,systemroot='c',papath='',timeout=5,verbose=0):
self.user = user#监控机器的username
self.host = host#监控机器的ip
self.verbose = verbose
self.password = password#密码
self.timeout=timeout#执行命令的timeout
self.systemroot=systemroot#windows 所安装的盘符
if not papath:#powershell.exe的路径
self.powershell_path=self.systemroot+':/WINDOWS/system32/WindowsPowerShell/v1.0/powershell.exe '
self.key = [
'authenticity',
'assword:',
'@@@@@@@@@@@@',
'Command not found.',
EOF,
]
self.f = open('ssh.out','w')
def ssh(self,command):
cmd='ssh -l %s %s %s'%(self.user,self.host,command)
print "cmd:",cmd
con=spawn(cmd,timeout=self.timeout)
seen=con.expect(self.key)
if seen == 0:
con.sendline('yes')
seen = con.expect(self.key)
if seen == 1:
#    if not self.password:
#      self.password = getpass.getpass('Remote password: ')
con.sendline(self.password)
try:
res=con.read()
except Exception ,e:
res=con.before
#      print "res:",res
return res
def ssh_disk(self):
cmd=self.powershell_path+"Get-WmiObject win32_logicaldisk"
res=self.ssh(cmd)
disk={}
if res:
res=res.split('No such file or directory')[-1].replace('\r','').split('\n')
res=[c for c in res if c]
#      print 'res:',res
predisk='C'
for d in res:
#      print d
key,value=d.split(':',1)
#      print d
#      print 'key:',key,'value:',value
key=key.strip()
value=value.strip()
if key=='DeviceID' and value not in disk.keys():
predisk=value
disk[predisk]={}
disk[predisk][key]=value
else:
if key in ['FreeSpace','Size']:
if value:
value=int(value)/1024/1024/1024
disk[predisk][key]=value
for d in disk.keys():
if disk[d]['DriveType']!='3':
disk.pop(d)
#    print 'disk:',disk
return disk
def ssh_cpu(self):
cmd=self.powershell_path+'gwmi -computername localhost win32_Processor'
res=self.ssh(cmd)
res=res.split('No such file or directory')[-1].replace('\r','').split('\n')
res=[r for r in res if r]
#    print res
cpu={}
for i in res:
#      print '='*10
#      print i
i=i.split(':')
#  print i
if len(i)==2:
key,value=i
else:
continue
key=key.strip()
value=value.strip()
#      print 'key:',key
#      print 'value:',value
cpu[key]=value
return cpu
def ssh_memory(self):
totalmem=self.powershell_path+'Get-WmiObject win32_OperatingSystem TotalVisibleMemorySize'
freemem=self.powershell_path+'Get-WmiObject win32_OperatingSystem FreePhysicalMemory'
memory={}
for cmd in [totalmem,freemem]:
res=self.ssh(cmd)
if 'Win32_OperatingSystem' in res:
res=res=res.replace('\r','').split('\n')
res=[m for m in res if m][-1]
print 'res:',res
key,value=res.split(':')
key=key.strip()
value=value.strip()
memory[key]=value
else:
print "not return data"
return None
return memory
def ssh_ping(self,host):
cmd='ping -n 1 %s'%host
patt=r'.+?(\d*)% loss.*'
res=self.ssh(cmd).replace('\r','').replace('\n','')
print res
m=re.match(patt,res)
if m:
lost_percent=m.group(1)
print 'lost_percent:',lost_percent
return int(lost_percent)
else:
return None
def ssh_ps(self):
cmd=self.powershell_path+'ps'
res=self.ssh(cmd)
ps=[]
if '-- -----------' in res:
res=res.replace('\r','').split('-- -----------')[-1].split('\n')
res=[d for d in res if d.strip()]
for p in res:
process={}
row=[para for para in p.split(' ') if para.strip()]
process['handles']=row[0]
process['npm']=row[1]
process['pm']=row[2]
process['ws']=row[3]
process['vm']=row[4]
process['cpu']=row[5]
process['id']=row[6]
process['process_name']=row[-1]
ps.append(process)
#      print ps
return ps
else:
return None
def ssh_netstat(self):
cmd='netstat -ao'
res=self.ssh(cmd)
netstat=[]
if 'PID' in res:
res=res.replace('\r','').split('PID')[-1].split('\n')
res=[d for d in res if d.strip()]
for p in res:
process={}
row=[para for para in p.split(' ') if para.strip()]
process['proto']=row[0]
process['local_address']=row[1]
process['foreign_address']=row[2]
process['state']=row[3]
process['pid']=row[-1]
netstat.append(process)
#      print netstat
return netstat
else:
return None
if __name__ == "__main__":
cmd="c:/WINDOWS/system32/WindowsPowerShell/v1.0/powershell.exe ps"
user='admin'
host='192.168.123.105'
password='123456'
ssh=ssh_win32(user,host,password,systemroot='c',timeout=5)
#  print ssh.ssh_cpu()
#  print "\n\n\n\n"
#  print ssh.ssh_disk()
#  print "\n\n\n\n"
#  print ssh.ssh_memory()
#  print ssh.ssh_ping(host)
#  print ssh.ssh_ps()
#  print ssh.ssh_netstat()

希望本文所述对大家的Python程序设计有所帮助。

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