python paramiko模块

1. SSH密码认证远程执行命令

#!/usr/bin/python
# -*- coding: utf-8 -*-
import paramiko
import sys

hostname = '192.168.1.215'
port = 22
username = 'root'
password = '123456'
client = paramiko.SSHClient()  # 绑定实例
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(hostname, port, username, password, timeout=5)
stdin, stdout, stderr = client.exec_command('df -h')  # 执行bash命令
result = stdout.read()
error = stderr.read()
# 判断stderr输出是否为空,为空则打印执行结果,不为空打印报错信息
if not error:
  print result
else:
  print error
client.close()

2. 私钥认证远程执行命令

#!/usr/bin/python
# -*- coding: utf-8 -*-
import paramiko
import sys

hostname = '192.168.1.215'
port = 22
username = 'root'
key_file = '/root/.ssh/id_rsa'
cmd = " ".join(sys.argv[1:])

def ssh_conn(command):
  client = paramiko.SSHClient()
  key = paramiko.RSAKey.from_private_key_file(key_file)
  client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
  client.connect(hostname, port, username, pkey=key)
  stdin, stdout, stderr = client.exec_command(command)  # 标准输入,标准输出,错误输出
  result = stdout.read()
  error = stderr.read()
  if not error:
    print result
  else:
    print error
  client.close()
  if __name__ == "__main__":
    ssh_conn(cmd)

3. 上传文件到远程服务器

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os, sys
import paramiko

hostname = '192.168.1.215'
port = 22
username = 'root'
password = '123456'
local_path = '/root/test.txt'
remote_path = '/opt/test.txt'
if not os.path.isfile(local_path):
  print local_path + " file not exist!"
  sys.exit(1)
try:
  s = paramiko.Transport((hostname, port))
  s.connect(username=username, password=password)
except Exception as e:
  print e
  sys.exit(1)
sftp = paramiko.SFTPClient.from_transport(s)
# 使用put()方法把本地文件上传到远程服务器
sftp.put(local_path, remote_path)
# 简单测试是否上传成功
try:
  # 如果远程主机有这个文件则返回一个对象,否则抛出异常               
  sftp.file(remote_path)
  print "上传成功."
except IOError:
  print "上传失败!"
finally:
  s.close()

4. 从远程服务器下载文件

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os, sys
import paramiko

hostname = '192.168.1.215'
port = 22
username = 'root'
password = '123456'
local_path = '/root/test.txt'
remote_path = '/opt/test.txt'
try:
  s = paramiko.Transport((hostname, port))
  s.connect(username=username, password=password)
  sftp = paramiko.SFTPClient.from_transport(s)
except Exception as e:
  print e
  sys.exit(1)
try:
  # 判断远程服务器是否有这个文件
  sftp.file(remote_path)
  # 使用get()方法从远程服务器拉去文件
  sftp.get(remote_path, local_path)
except IOError as e:
  print remote_path + "remote file not exist!"
  sys.exit(1)
finally:
  s.close()
  # 测试是否下载成功
if os.path.isfile(local_path):
  print "下载成功."
else:
  print "下载失败!"

 5. 上传目录到远程服务器

 paramiko模块并没有实现直接上传目录的类,已经知道了如何上传文件,再写一个上传目录的代码就简单了,利用os库的os.walk()方法遍历目录,再一个个上传

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os, sys
import paramiko

hostname = '192.168.1.215'
port = 22
username = 'root'
password = '123456'
local_path = '/root/abc'
remote_path = '/opt/abc'
# 去除路径后面正斜杠
if local_path[-1] == '/':
  local_path = local_path[0:-1]
if remote_path[-1] == '/':
  remote_path = remote_path[0:-1]
file_list = []
if os.path.isdir(local_path):
  for root, dirs, files in os.walk(local_path):
    for file in files:
      # 获取文件绝对路径
      file_path = os.path.join(root, file)
      file_list.append(file_path)
else:
  print local_path + "Directory not exist!"
  sys.exit(1)
try:
  s = paramiko.Transport((hostname, port))
  s.connect(username=username, password=password)
  sftp = paramiko.SFTPClient.from_transport(s)
except Exception as e:
  print e
for local_file in file_list:
  # 替换目标目录
  remote_file = local_file.replace(local_path, remote_path)
  remote_dir = os.path.dirname(remote_file)
  # 如果远程服务器没目标目录则创建    
try:
  sftp.stat(remote_dir)
except IOError:
  sftp.mkdir(remote_dir)
print "%s -> %s" % (local_file, remote_file)
sftp.put(local_file, remote_file)
s.close()

 sftp是安全文件传输协议,提供一种安全的加密方法,sftp是SSH的一部分,SFTPClient类实现了sftp客户端,通过已建立的SSH通道传输文件,与其他的操作,如下:

方法	描述
sftp.getcwd()	返回当前工作目录
sftp.chdir(path)	改变工作目录
sftp.chmod(path, mode)	修改权限
sftp.chown(path, uid, gid)	设置属主属组
sftp.close()	关闭sftp
sftp.file(filename, mode=’r’, bufsize=-1)	读取文件
sftp.from_transport(s)	创建SFTP客户端通道
sftp.listdir(path=’.’)	列出目录,返回一个列表
sftp.listdir_attr(path=’.’)	列出目录,返回一个SFTPAttributes列表
sftp.mkdir(path, mode=511)	创建目录
sftp.normalize(path)	返回规范化path
sftp.open(filename, mode=’r’, bufsize=-1)	在远程服务器打开文件
sftp.put(localpath, remotepath, callback=None)	localpath文件上传到远程服务器remotepath
sftp.get(remotepath, localpath, callback=None)	从远程服务器remotepath拉文件到本地localpath
sftp.readlink(path)	返回一个符号链接目标
sftp.remove(path)	删除文件
sftp.rename(oldpath, newpath)	重命名文件或目录
sftp.rmdir(path)	删除目录
sftp.stat(path)	返回远程服务器文件信息(返回一个对象的属性)
sftp.truncate(path, size)	截取文件大小
sftp.symlink(source, dest)	创建一个软链接(快捷方式)
sftp.unlink(path)	删除软链接

 

posted @ 2018-09-18 16:25  ZhiChao&  阅读(459)  评论(0编辑  收藏  举报