从本地python脚本运行远程python脚本并传递一些参数

Question

I have a remote python script which has the following code in it:

    from os import system
    import sys


    if __name__ == '__main__':

        arg1 = sys.argv[1] // ip address of host
        arg2 = sys.argv[2]

        cmd_txt = "ssh -i pem-file user@" + arg1 + " 'cd /folder1/folder2/ && java -cp jar-file.jar pack1.pack2.py-file -f folder1/folder2/file_" + ts + ".txt'"
        system(cmd_txt)

Now I want to run this remote python script from a python script which is present on my local machine alongwith passing the two arguments to it - arg1 & arg2 . So basically my local python script will make a call to remote python script and pass the two arguments to it. I know how to execute a local python script from another python script but not the remote python script. How can I do this?

UPDATE: I executed this script from my local machine which makes a call to remote python script and passes two arguments. When I run this script I get Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password) error:

host = [host-ip] #host_ip in string format
args1 = 'str1'
args2 = 'str2'

cmd_txt = "sudo ssh -i pem-file user@" + host + " 'cd folder1/folder2/ && python file1.py "+ args1 +" "+ args2 +"'"
system(cmd_txt)

What am I missing in my code above?

Answer 1

Prerequisite: SSH and key sync (the client's public key should be in the server's authorized_keys file).

I see that your local command starts with sudo . Yet the .pem file will provide the same access to the server regardless if you're connecting from a root or standard account on your local system (different situation if you weren't using the .pem file but the default ${HOME}/.ssh/id_rsa ). I recommend making sure the normal local user can make outgoing ssh connections and dropping the sudo .

Take a look at the Fabric package (pip install fabric). It really rocks at what you want to achieve. The big advantage is that Fabric provides a good abstraction over the os or subprocess statements and allows you to run server-side commands from within the client script, ie

from fabric.api import put, run
from fabric.contrib.files import exists

try:
    with cd("/folder1/folder2"):
        put("file1.py")
        run("python file1.py %s" % " ".join([args1, args2, ...]))
except:
    # handle exceptions gracefully on client side
finally:
    try:
        if exists("/folder1/folder2/file1.py"):
            run ("rm -f /folder1/folder2/file1.py")
    except:
        pass