I am new to paramiko module for python. I want to make a remote ssh connection to a client. For now I am trying to connect to the localhost using the paramiko module but every time running the python script gives the No Valid Connection error? How can I solve this?
import paramiko
ssh=paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect('127.0.0.1')
This is the error I get running this script.
raise NoValidConnectionsError(errors)
paramiko.ssh_exception.NoValidConnectionsError: [Errno None] Unable to connect to port 22 on 127.0.0.1
Related
ssh_client =paramiko.SSHClient()
ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh_client.load_system_host_keys()
ssh_client.set_missing_host_key_policy(paramiko.WarningPolicy)
ssh_client.connect(hostname='abc',username='admin',password='admin')
with SCPClient(ssh_client.get_transport()) as scp:
scp.put(local_path='example.txt',remote_path='/abc')
I am trying to connect to a Windows system and send a file example.txt to it. But if I run the script, it gives the following error when sending a file to a windows system
paramiko.ssh_exception.NoValidConnectionsError: [Errno None] Unable to connect to port 22 on 'IP Address'
Help would be appreciated.
Edit: The Windows system that I am sending the file to runs a Windows 2008 server.
If you want to connect with Paramiko SSH/SFTP/SCP library to a machine, the machine must be running SSH/SFTP/SCP server.
Windows does not come with SSH/SFTP/SCP server running by default.
See Windows SSH Servers? question on Super User.
I have a remote Linux server setup where I am hosting a python script. The requirement is to connect to MongoDB that is hosted in a local windows machine. I understand that we can't directly access MongoDB as it allows only localhost:27017 by default.
Tried updating the mongo.cfg file by changing the properties under "net". However this didn't help. Can someone help me out in this case. I am getting the error below:
10.30.118.230:27017: [Errno 111] Connection refused
This is the code:
from pymongo import MongoClient
client = MongoClient("mongodb://{username}:{password}#{windows_system_ip_whereMongoDb_is_hosted}/{dbname}")
db = client.{dbname}
try:
db.command("serverStatus")
except Exception as e:
print(e)
else:
print("You are connected!")
client.close()
BY default windows firewall block all input connections in port 27017, you should enable the port 27017 in windows firewall to allow the connections through the port.
Configure Windows netsh Firewall for MongoDB
I am attempting to run a simple command (ls) using the fabric module by following the examples found in the fabric documentation. However, when I attempt to call the run method on a Connection object, I receive
socket.gaierror: [Errno 8] nodename nor servname provided, or not known
import fabric
c = fabric.Connection('host')
c.run('ls')
I have utilized the socket module before, and the error above is generally raised when running socket.gethostbyname(socket.gethostname()) to bind a socket to a machine. However, socket.gethostbyname(socket.gethostname()) runs without error for me.
How can I successfully use fabric to run commands in the shell? As fabric utilizes SSH, are there any SSH configurations needed before using fabric?
I am running fabric on macOS Sierra 10.12.5 on Python 3.7.0
In the Connection constructor, you need to give the real host name.
For instance:
import fabric
c = fabric.Connection('localhost')
c.run('ls')
If the SSH protocole is not configured, you have another error message. For instance:
paramiko.ssh_exception.NoValidConnectionsError: [Errno None] Unable to connect to port 22 on 127.0.0.1, ::1 or fe80::1%lo0
Ofen, the server name is not enough, you need to add the domain name, for instance myserver.mydomain.com.
I am trying establish remote desktop connection from a windows machine to other windows machine and have tried below scenarios -
import paramiko
ssh = paramiko.SSHClient()
ssh.load_system_host_keys()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect('IP',port = 3389, username='un',password='pwd')
print ("Connected to %s" % 'IP')
stdin, stdout, stderr = ssh.exec_command('ls -1 /root|head -n 5')
print ("STDOUT:\n%s\n\nSTDERR:\n%s\n" %( stdout.read(), stderr.read() ))
Upon running above code i observed below error message
paramiko.ssh_exception.SSHException: Error reading SSH protocol banner[WinError 10054] An existing connection was forcibly closed by the remote host
Looked at this quetsion - python connecting to ssh An existing connection was forcibly closed by the remote host
But, I haven't closed the connection in my code and still face the exception.
I looked at some forums and understood that for windows machine 3389 is the port for remote desktop connection and so used 3389 as port in my code.
I have also used port=22, ran the code and observed this exception:
paramiko.ssh_exception.NoValidConnectionsError: [Errno None] Unable to connect to port 22 on IP
I have also tried few - How to connect to a remote Windows machine to execute commands?
procedures stated here to make remote desktop connection. But couldn't establish the connection.
versions:
paramiko: 2.4.0
python: 3.6.4
You need SSH server on the server to connect with SSH.
There's no SSH server by default in Windows, so you cannot connect to port 22, unless you install some. See https://serverfault.com/q/648855/168875
You absolutely cannot connect to Remote desktop port 2289 with SSH.
Also, even if you install SSH server, it won't allow you to execute *nix command like ls on Windows. Neither it would magically create some root folder on Windows.
For that you additionally need to install some *nix-emulation on Windows, like Windows Subsystem for Linux or Cygwin.
Overall, your question like a conceptual misunderstanding.
I wrote an XML RPC server in python and a simple Test Client for it in python. The Server runs on a linux box. I tested it by running the python client on the same linux machine and it works.
I then tried to run the python client on a Mac and i get the following error
socket.error: (61, 'Connection Refused')
I can ping and ssh into the linux machine from the Mac. So i dont think its a configuration or firewall error.
Does anyone have any idea what could be going wrong?
The code for the client is as below:
import xmlrpclib
s = xmlrpclib.ServerProxy('http://143.252.249.141:8000')
print s.GetUsers()
print s.system.listMethods()
"Connection Refused" means the connection was REFUSED - the machine 143.252.249.141 is up, and in the network, but is not accepting connections on port 8000 - it is actively refusing them.
So maybe the server software isn't running on the server? Or is running in another port? Or is bound to a different IP address?