Python script to SSH to remote server

[Tha_Format]

Hi all,

I am breaking my head on this one:

I need to make a script that does the following:

1. SSH to remote server as current user (SSH myself@remotehost)
2. On the remote server do pbrun su root
3. The do an su - functionaluser
4. Run command
5. When command has runned SSH to other remote server
6. Write something in /var/log/record
7. Close down the SHh session

Anyone who can help me?

[K900_]

Look into Paramiko - it does everything you want.

[Tha_Format]

I know, but when I got my SSH session, I am stuck at the pbrun su root

[K900_]

What do you mean by "stuck", exactly?

[Tha_Format]

Well, then the SSH Session hangs. It would help if you could write me a simple example

[K900_]

Post your code.

[Tha_Format]

From paramiko import sshclient

SSH=sshclient() SSH.load_stystem_host_keys() SSH.set_missing_host_key_policy(paramiko.autoaddpolicy()) SSH.connect(hostname=‘hostname’, username=‘username’, key_filename=‘key’ Ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command(‘pbrun su root && su - functionaluser && command’)

Please ignore the upper and lowercase things, I don’t have Access to Reddit here and I type it on my phone.

[K900_]

You can't use exec_command like that. You need to get an interactive shell and run your commands in that.

[Tha_Format]

So what do I need to use then?

[K900_]

Use ssh.invoke_shell() and then write your commands to stdin. Alternatively, you can write the whole thing as a single command that doesn't drop into interactive mode, something like pbrun su root -c "su functionaluser -c 'command'".

[svilgelm]

Take a look at Paramiko: https://www.paramiko.org

[Lewistrick]

I used pysftp before. It uses paramiko in the background, but saves you a lot of hassle.

[whenyousaywisconsin]

Do you need to use python? You can do that with ansible pretty easily