Question

i m new on python. 我写了一个脚本, 连接到主机并执行一个命令

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(host, username=user, password=pw)

print  running remote command 

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

for line in stdout.read().splitlines():
    print  %s$: %s  % (host, line)
    if outfile != None:
        f_outfile.write("%s
" %line)

for line in stderr.read().splitlines():
    print  %s$: %s  % (host, line + "
")
    if outfile != None:
        f_outfile.write("%s
" %line)

ssh.close()

if outfile != None:
    f_outfile.close()

print  connection to %s closed  %host

except:
   e = sys.exc_info()[1]
   print  %s  %e

当远程命令不需要 tty 。我发现一个引用_shell 示例 < a href=> https://stackoverflow.com/ questions/1911690/nested-ssh-session- with- palamiko" 的 SSH 会话与 Paramiko < / a> 一同使用。 i 不喜欢这个解决方案, 因为如果服务器的提示在我的脚本 - & gt; 无限循环或脚本中指定的提示是返回文本 - gt 的字符串 - & gt; 并非所有数据都会收到。是否有更好的解决方案可以让 stdout 和 stder 发送到我脚本中的提示?

Answer 1

可在以下网址找到大量paramiko API文件:http://docs.paramiko.org/en/stable/index.html 。

我使用以下方法执行密码保护客户端的命令 :

import paramiko

nbytes = 4096
hostname =  hostname 
port = 22
username =  username  
password =  password 
command =  ls 

client = paramiko.Transport((hostname, port))
client.connect(username=username, password=password)

stdout_data = []
stderr_data = []
session = client.open_channel(kind= session )
session.exec_command(command)
while True:
    if session.recv_ready():
        stdout_data.append(session.recv(nbytes))
    if session.recv_stderr_ready():
        stderr_data.append(session.recv_stderr(nbytes))
    if session.exit_status_ready():
        break

print  exit status:  , session.recv_exit_status()
print   .join(stdout_data)
print   .join(stderr_data)

session.close()
client.close()

Answer 2

被接受的答案有问题, 有时( 随机的) 它会从服务器上带来剪切的反应。我不知道为什么, 我没有调查被接受的答案的错误原因, 因为这个代码对我非常有效 :

import paramiko

ip= server ip 
port=22
username= username 
password= password 

cmd= some useful command  

ssh=paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip,port,username,password)

stdin,stdout,stderr=ssh.exec_command(cmd)
outlines=stdout.readlines()
resp=  .join(outlines)
print(resp)

stdin,stdout,stderr=ssh.exec_command( some really useful command )
outlines=stdout.readlines()
resp=  .join(outlines)
print(resp)

Answer 3

The code of @ThePracticalOne is great for showing the usage except for one thing: Somtimes the output would be incomplete.(session.recv_ready() turns true after the if session.recv_ready(): while session.recv_stderr_ready() and session.exit_status_ready() turned true before entering next loop)

所以我的想法是,当数据准备退出会议时, 重新检索数据。

while True:
if session.exit_status_ready():
while True:
    while True:
        print "try to recv stdout..."
        ret = session.recv(nbytes)
        if len(ret) == 0:
            break
        stdout_data.append(ret)

    while True:
        print "try to recv stderr..."
        ret = session.recv_stderr(nbytes)
        if len(ret) == 0:
            break
        stderr_data.append(ret)
    break

Answer 4

无密码SSH为我工作

import paramiko

def connect_SSH():
    ssh = paramiko.SSHClient()
    username =  <uname> 
    port = <port-no>
    ip =  <ip-address> 
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(ip,port,username)

    stdin, stdout, stderr = ssh.exec_command( <cmd> )
    outlines = stdout.readlines()
    resp=  .join(outlines)
    print(resp) 
connect_SSH()

Answer 5

ThePracticalOne - you are hero! I had problems with exec_comm和 (which is a member of Client) I tried to run powershell comm和s over ssh on Windows server, 和 only your example with

client = paramiko.Transport((hostname, port))
client.connect(username=username, password=password)

和

 while True:
        if session.recv_ready():
            stdout_data.append(session.recv(nbytes))
        if session.recv_stderr_ready():
            stderr_data.append(session.recv_stderr(nbytes))
        if session.exit_status_ready():
            break

帮助我!

Answer 6

###### Use paramiko to connect to LINUX platform############
import paramiko

ip= server ip 
port=22
username= username 
password= password 
ssh=paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip,port,username,password)

--------Connection Established-----------------------------

######To run shell commands on remote connection###########
import paramiko

ip= server ip 
port=22
username= username 
password= password 
ssh=paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(ip,port,username,password)


stdin,stdout,stderr=ssh.exec_command(cmd)
outlines=stdout.readlines()
resp=  .join(outlines)
print(resp) # Output

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