paramiko远程登录与sftp文件传输

（一）基于用户名密码的远程登录加命令执行

  
  
import paramiko
#创建ssh链接实例
ssh = paramiko.SSHClient()
#创建白名单，默认不询问， 即允许连接不在known_hosts文件中的主机
known_hosts = paramiko.AutoAddPolicy()
ssh.set_missing_host_key_policy(known_hosts)
#链接服务器
ssh.connect(
hostname = "10.10.65.65", # inux主机
port = 22, #端口，默认22
username = "chen", #用户名 ,也可登录到root
password = "123" #密码
)
#执行命令
stdin,stdout,stderr = ssh.exec_command( "ls /")
#ssh.exec_command() 返回三个类文件对象
#stdin是远程主机接收我们写入到数据，stdout是远程主机向我们输出信息
#stdin 是写权限的文件对象，标准输入
#stdout 是读权限的文件对象，标准输出
#stderr 是读权限的文件对象，标准错误，特殊的输出
#查看执行结果
result = stdout.read().decode() # 得到远程主机的输出

print(result)
#关闭链接，释放内存
ssh.close()
  
  

（二）基于多线程的远程登录

  
  
import threading

def Exec(command,ip,user,passwd,port = 22):
"""
编写执行命令的模块
"""
ssh = paramiko.SSHClient()
know_hosts = paramiko.AutoAddPolicy()
ssh.set_missing_host_key_policy(know_hosts)
ssh.connect(
hostname = ip,
port = port,
username = user,
password = passwd
)

stdin, stdout, stderr = ssh.exec_command(command)

result = stdout.read().decode()
print( "+++++++++++++++++%s+++++++++++++++++++++" % ip)
print(result)
print( "+++++++++++++++++%s+++++++++++++++++++++" % ip)

ssh.close()

def main(command,pool):
lenth = len(pool)
thread_pool = []
for i in range(lenth):
t = threading.Thread(target = Exec,args = (command,)+pool[i])
thread_pool.append(t)
for t in thread_pool:
t.start()
for t in thread_pool:
t.join() # join见讲解
#https://blog.csdn.net/sinat_38068807/article/details/88742964

if __name__ == "__main__":
command = input( ">>>")
pool = [
( "10.10.65.95", "root", "123", 22),
( "10.10.65.71", "root", "123",)
]
main(command,pool)
  
  

（三）基于面向对象的多线程

Pyhton 多线程模块threading通过Thread类构建新的线程

Thread类当做提供了run方法用于子类继承重写

当run方法被修改，在线程调用start的时候，会调用run的功能作为线程的功能。

  
  
import random
import threading
from time import sleep

class ExecThread(threading.Thread):
def __init__(self):
super(ExecThread,self).__init__()

def run(self):
time = random.randint( 1, 3)
sleep(time)
print( "hello world,I will sleep %s second"%time)

pool = []
for i in range( 10):
t = ExecThread()
pool.append(t)
for i in pool:
i.start()
for i in pool:
i.join()
  
  

（四）多线程面向对象

  
  
import threading

class ExecThread(threading.Thread):
def __init__(self,command,ip,user,passwd,port = 22):
self.command = command
self.ip = ip
self.user = user
self.password = passwd
self.port = port
super(ExecThread,self).__init__()

def run(self):
ssh = paramiko.SSHClient()
know_hosts = paramiko.AutoAddPolicy()
ssh.set_missing_host_key_policy(know_hosts)
ssh.connect(
hostname = self.ip,
port = self.port,
username = self.user,
password = self.password
)

stdin, stdout, stderr = ssh.exec_command(self.command)

result = stdout.read().decode()
print( "+++++++++++++++++%s+++++++++++++++++++++" % self.ip)
print(result)
print( "+++++++++++++++++%s+++++++++++++++++++++" % self.ip)

ssh.close()

def main(command,pool):
lenth = len(pool)
thread_pool = []
for i in range(lenth):
ip = pool[i][ 0]
user = pool[i][ 1]
passwd = pool[i][ 2]
if len(pool[i]) > 3:
port = pool[i][ 0]
t = ExecThread(command, ip, user, passwd, port)
else:
t = ExecThread(command, ip, user, passwd)
thread_pool.append(t)
for t in thread_pool:
t.start()
for t in thread_pool:
t.join()

if __name__ == "__main__":
command = input( ">>>")
pool = [
( "10.10.65.95", "root", "123"),
( "10.10.65.71", "root", "123")
]
main(command,pool)
  
  

（五）交互式编程

  
  
import paramiko

ssh = paramiko.SSHClient()
know_hosts = paramiko.AutoAddPolicy()
ssh.set_missing_host_key_policy(know_hosts)
ssh.connect(
hostname = "10.10.65.95", #主机
port = 22, #端口，默认22
username = "root", #用户名
password = "123" #密码
)

shell = ssh.invoke_shell() #实例化一个terminal
shell.settimeout( 1) #命令执行的等待时间

command = input( ">>>")+ "\n" #\n回车
shell.send(command) #发送命令

while True:
try:
recv = shell.recv( 512).decode() #接受返回
if recv:
print(recv)
else:
continue
except:
command = input( ">>>")+ "\n"
shell.send(command)

ssh.close()
  
  

（六）sftp文件上传下载

  
  
import paramiko

trans = paramiko.Transport(
sock=(
"10.10.65.65", 22
)
)

trans.connect(
username= "root",
password= "123"
)

sftp = paramiko.SFTPClient.from_transport(trans)

sftp.put( "ssh2.py", "/opt/test.py") # 将本机ssh2.py放到远程机的/opt下并命名test.py
# sftp.get("/opt/main.py", "hello.py")

sftp.close()
  
  

（一）基于用户名密码的远程登录加命令执行