I have been able to use ssh and issue command in the remote server. Now I want to scp files from the remote server but that just seems like its impossible. I'm totally new to python and Paramiko. The error is permission denied in my local directory of darn windows. The files are supposed to come from the Mac. Any other really really simple example I can use to scp files from a remote Linux machine to my local Windows machine?
import paramiko
hostname = '192.xx.1.xx'
password = 'pop123'
username = "husbad2"
port = 22
mypath='C:\\Users\\handsonexpert\\Documents'
remotepath='/Users/ihussain/testdir/file3.txt'
t = paramiko.Transport((hostname, 22))
t.connect(username=username, password=password)
sftp = paramiko.SFTPClient.from_transport(t)
sftp.put(mypath, remotepath)
To retrieve files from a remote host into a local directory:
......
localpath='C:\\Users\\handsonexpert\\Documents\\file3.txt'
remotepath='/Users/ihussain/testdir/file3.txt'
......
sftp.get(remotepath, localpath)
You're not using scp here, but SFTP (SFTPClient).
If you're set on using scp, maybe take a look at this paramiko scp client, there is an example of how to use it here.
Aside, out of general security interests and programming style, don't hard code your password and user credentials, and especially never publish them in a public forum like SO. We don't need them and you don't need to post them.
Related
I want to copy a file from my SFTP server to local computer. However, when I run my code, it didn't show any error while I still cannot find my file on local computer. My code like that:
import paramiko
host_name ='10.110.100.8'
user_name = 'abc'
password ='xyz'
port = 22
remote_dir_name ='/data/.../PMC1087887_00003.jpg'
local_dir_name = 'D:\..\pred.jpg'
t = paramiko.Transport((host_name, port))
t.connect(username=user_name, password=password)
sftp = paramiko.SFTPClient.from_transport(t)
sftp.get(remote_dir_name,local_dir_name)
I have found the main problem. If I run my code in local in VS Code, it works. But when I login in my server by SSH in VS Code, and run my code on server, I found that my file appeared in current code folder (for example /home/.../D:\..\pred.jpg) and its name is D:\..\pred.jpg. How to solve this problem if I want to run code on server and download file to local?
If you call SFTPClient.get on the server, it will, as any other file manipulation API, work with files on the server.
There's no way to make remote Python script directly work with files on your local machine.
You would have to use some API to push the files to your local machine. But for that, your local machine would have to implement the API. For example, you can run an SFTP server on the local machine and "upload" the files to it.
I want to create a directory in my remote system using python script or by socket programming. I have remote system's Username, password and IP address. I am able to do this in my local machine but not in remote. Please help!
Download Putty then connect to remote system) and in terminal write mkdir foldername
To create a directory on a remote machine, you will have to first connect to it.Telnet and SSH and SSH is used to connect to remote machines. Obviously TELNET or SSH service should be running on the remote machine, otherwise you won't be able to connect.Since in case of Telnet,data is transfered in plain text, it's better to use SSH protocol.
Once connected to the remote machine using SSH, you will be able to execute commands on the remote machine.
Now since you want to do everything in Python, you will have to write a complete SSH client in Python. Which is greate for learning, because you will learn about socket programming and cryptography.
If you are in a hurry, you can use a good SSH library.
If you are getting network connection error, please check whether SSH is installed in the remote machine or not. If yes, then check firewall settings.
I am trying to connect to a test device on my local network using paramiko and SSH. If I specify the filename of my key and its passphrase, I can connect to the device without a problem. However, since my script is meant to run on any machine that has the key added to the ssh-agent, I am trying to find a way around that.
ssh-add -l shows me that the key is active in my ssh-agent, but if I use the get_keys() method from the paramiko.Agent-class, there's just an empty list, meaning to me that Paramiko either can't connect to the ssh-agent or doesn't have the permissions to get the keys.
From shell, I can just connect to the device with ssh root#IPADDRESS. When I try to connect to device with Paramiko without specifying the path to the key and its passphrase, I'm just getting the "Authentication failed" error.
import paramiko
import os
def createSSHClient(server, port, user):
client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(server, port, username=user)
return client
ssh = createSSHClient('IPADDRESS', 22, 'root')
Checking SSH_AUTH_SOCK in os.environ gives me back False, but as far as I know, SSH on Windows doesn't quite work like on Unix/Linux.
Paramiko can talk to Windows OpenSSH ssh-agent since 2.10 only (and it was buggy in 2.10.3). Make sure you have the latest version of Paramiko.
Older versions could talk to PuTTY Pageant only.
I'm currently trying to write an airflow job that will allow me to ssh into an EC2 instance and then start an sftp session with another host from within this EC2 box. My current code that I have is as follows:
def run_ssh():
hook = SSHHook(ssh_conn_id='xyz').get_conn() #returns an ssh client
stdin, stdout, stderr = hook.exec_command('sftp user#host.com;')
# This next step prompts me for password so i provide it
stdin.write('password')
logging.info(stdout.readlines())
stdin, stdout, stderr = hook.exec_command('ls')
logging.info(stdout.readlines())
When i print the final line i should be seeing some folders but instead just see ['a\n']... so it seems I'm not actually able to sftp. Are there better ways to sftp from a remote host through a python script running locally.
Any help with this is appreciated. The answer can be geared towards a simple python script as opposed to airflow.
For your literal question, see:
Pass input/variables to command/script over SSH using Python Paramiko
Though implementing an SFTP over jump host this way is not a good solution.
Use port forwarding instead:
Nested SSH using Python Paramiko
Port forwarding and the open SFTP using Python Paramiko
I am trying to ran a matlab executable application from Python on a remote server.
I used following code:
os.system("\\Server-01\\D$\\matlab_t.exe 7.25 16") # 7.25 and 16 are input arguments of matlab_t.exe
The above code is running on my local machine. I noticed that it is using resources (CPU and memory) of my local machine, while I am trying to use resources on the remote server.
May I know how I can execute it using server resource?
Thanks.
That command will run on your computer, the path may be pointing to a remote server, but no one has told the remote server that it should execute code, only that they need to serve the matlab_t.exe file.
You have to use a mechanism to access the remote server. Normally ssh is used for this purpose, but the ssh daemon has to be running on the remote server and also you need to have access (ask you admin about that).
Then you can use python like this:
import paramiko
ssh = paramiko.SSHClient()
ssh.connect(server, username=username, password=password)
ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(cmd_to_execute_on_remote_server)
In python, the os.system command only executes the command on the local machine. What you want is a local command that will get the server to execute it by itself.
If the server is Windows based then you can use PsExec to do this, if the server is Linux based then using ssh with a python library (like the other answer demonstrates) would probably be the way to go.
Using PsExec, your command in os.system would be something like:
psexec.exe \\Server-01 -u <username> -p <password> D:\matlab_t.exe 7.25 16
If you server needed no authentication, you could remove the username and password flags.