python之paramiko模块

最新推荐文章于 2024-07-23 02:54:45 发布

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本文介绍了Python的Paramiko库在SSH连接中如何实现文件的上传和下载，以及进行远程连接的操作步骤。

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上传文件

import paramiko
from paramiko.ssh_exception import NoValidConnectionsError,AuthenticationException
def sftp_upload_file(server_path, local_path):
    try:
        t = paramiko.Transport((ip, 22))
        t.connect(username=user, password=pwd)
        sftp = paramiko.SFTPClient.from_transport(t)
        sftp.put(local_path, server_path)
        t.close()
   except AuthenticationException as e:
    		return '主机%s密码错误' %(ip)
	except Exception as e:
    		return '未知错误: ',e
    finally:						#不论初步出错，都会执行的代码
    		t.close()

下载文件

from paramiko.ssh_exception import NoValidConnectionsError,AuthenticationException
import paramiko
def sftp_down_file(server_path, local_path):
    try:
        t = paramiko.Transport((ip, 22))
        t.connect(username=user, password=pwd)
        sftp = paramiko.SFTPClient.from_transport(t)
        sftp.get(server_path, local_path)
  		except AuthenticationException as e:
    		return '主机%s密码错误' %(ip)
		except Exception as e:
    		return '未知错误: ',e
    	finally:						#不论初步出错，都会执行的代码
    		t.close()

远程连接

def ssh_conn(cmd):
    ssh = paramiko.SSHClient()
    # 允许连接不在known_hosts文件上的主机
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    # 连接服务器
    #ssh.connect(ip, 22, user, pwd)
    try:
	    client.connect(
  	  		hostname='172.25.0.1',
   	  		username='root',
  	 		password='redhat'
			)
	    # 执行命令
	    stdin, stdout, stderr = ssh.exec_command(cmd)
	    # 获取结果
	    #print(stdout.read().decode('utf-8'))
	    a = stdout.read()decode('utf-8')
	    for line in stdout:
	        res=(line.strip('\n').split())
	        print(res)
	    else:
	        print(stdout)
    	return a
    except NoValidConnectionsError as e:
   		return '主机%s连接失败' %(hostname)
	except AuthenticationException as e:
    	return '主机%s密码错误' %(hostname)
	except Exception as e:
    	return '未知错误:',e