no support for Proxying

[netllama]

I'd like to use parallel-ssh for several projects, however all of my servers can only be accessed by proxying through a bastion host. I can easily deal with this from the ssh command line by setting the ProxyCommand directive in my ~/.ssh/config for each Host stanza. However, I can't find any way to make use of the ProxyCommand with parallel-ssh.

paramiko definitely appears to support proxying (for example: https://gist.github.com/tell-k/4943359 ). However proxying requires a call to paramiko.SSHClient.connect(sock=) which is hostname specific. It would seem like the correct place to add the sock parameter is in ParallelSSHClient()?
Am I missing an obvious way to make this work with parallel-ssh?

[netllama]

I also need a mechanism for ssh agent support. That too works with paramiko, however it also requires a call to paramiko.SSHClient.connect() which is hostname specific.

[pkittenis]

Thanks, have marked this as a new feature. Keys in ssh-agent are used already, that is the paramiko default.

If you mean ssh-agent forwarding, then yes that is currently not in ParallelSSH. Have raised #8 for that.

[netllama]

thanks

[pkittenis]

To answer your question btw, the correct place to do this is in pssh.SSHClient.

There is essentialy a pssh.SSHClient instance per a single, unique, hostname in the host list passed to pssh.ParallelSSHClient.

Anything that is host specific or acts on a single SSH client/server belongs in pssh.SSHClient, which is then automatically used when acting in parallel via ParallelSSHClient.

Flow diagram looks like:

pssh.ParallelSSHClient <-> pssh.SSHClient <-> SSH server

[pkittenis]

ProxyCommand support is now merged, so is agent forwarding from #8.

There is debug logging for the proxy command configured, you will see something like the below with debug logging enabled:

Proxy configured for destination host <host> - ProxyCommand: '<command>'

There is an equivalent ProxyCommandException now raised, see https://github.com/pkittenis/parallel-ssh/blob/master/pssh.py#L63