本文实例讲述了python操作ssh实现服务器日志下载的方法。分享给大家供大家参考。具体实现方法如下：

#coding:utf-8
\"\"\"
  ssh操作例子 实现了服务器日志下载
  2012-08-24
  yywolf
\"\"\"
import paramiko
import time
hostname=\"????\"
port=22
username=\"app\"
password=\"????\"
if __name__==\"__main__\":
#  paramiko.util.log.log_to_file(\'paramiko.log\')
  s = paramiko.SSHClient()
  s.load_system_host_keys()
  s.set_missing_host_key_policy(paramiko.AutoAddPolicy()) 
  s.connect(hostname,port,username,password,timeout=4)
  stdin,stdout,stderr = s.exec_command(\"sh ~/log/check\")
  print stdout.read()
  s.close()
  #sftp
  t = paramiko.Transport((hostname,port))
  t.connect(username=username,password=password)
  sftp = paramiko.SFTPClient.from_transport(t)
  files = sftp.listdir(\"/home/app/log/\")
  for f in files:
    print f
  filetime = time.strftime(\'%Y-%m-%d\',time.localtime(time.time()))
  #需要下载的文件 和下载后的文件名
  sftp.get(\"/home/app/log/server.txt\",\"C:\\\\Users\\\\Administrator\\\\Desktop\\\\server.txt\")   
  sftp.get(\"/home/app/log/\"+filetime+\".log.zip\",\"C:\\Users\\Administrator\\Desktop\\\\\"+filetime+\".log.zip\")
  #RASkey
  pkey_file = \"E:\\\\yy\\\\tools\\\\key\\\\rsa.txt\"
  key = paramiko.RSAKey.from_private_key_file(pkey_file)
  s = paramiko.SSHClient()
  s.load_system_host_keys()
  s.set_missing_host_key_policy(paramiko.AutoAddPolicy()) 
  s.connect(hostname,port,username,pkey=key)
  stdin, stdout, stderr = s.exec_command(\"ls -l /home/app/log\")
  print stdout.read()
  s.close()
  raw_input()

希望本文所述对大家的Python程序设计有所帮助。