以前总是利用shell来编写脚本,最近学习python,发现paramiko使用上很方便,paramiko就是利用ssh协议进行通信。
需求:利用paramiko库远程连接到远程服务器,执行命令“ps aux”,查看指定服务的的cpu,内存,VSZ,RSS信息,并且以指定格式输出。
脚本如下:
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#! /usr/bin/env python
#coding:utf-8
#通过paramiko模块,获得远程机器的指定进程相关信息;
import
paramiko
host_lists
=
(
(
'node1'
,
'172.16.41.151'
),
(
'node2'
,
'172.16.41.152'
),
(
'node3'
,
'172.16.41.153'
),
(
'node4'
,
'172.16.41.158'
)
)
def
getServerInfo(host,user,password,services):
conn
=
paramiko.SSHClient()
conn.load_system_host_keys()
conn.set_missing_host_key_policy(paramiko.AutoAddPolicy())
conn.connect(host,
22
,user,password)
stdin,stdout,stderr
=
conn.exec_command(
"ps aux|awk '{print $3,$4,$5,$6,$11}'|grep %s"
%
services)
info
=
stdout.read()
conn.close()
return
info
if
__name__
=
=
'__main__'
:
print
"hostname %CPU %MEM VSZ RSS services"
for
host
in
host_lists:
try
:
info
=
getServerInfo(host[
1
],
'root'
,
'passwd'
,
'cupsd'
)
info_list
=
info.split()
print
"%s %s %s %s %s %s "
%
(host[
0
],info_list[
0
],info_list[
1
],info_list[
2
],info_list[
3
],info_list[
4
] )
except
:
pass
|
执行结果如下:
本文转自 shine_forever 51CTO博客,原文链接:http://blog.51cto.com/shineforever/1581958