GetSigner returns an ssh.Signer for the provider ("gce", etc.) that can be used to SSH to their nodes.

IssueSSHCommand tries to execute a SSH command.

IssueSSHCommandWithResult tries to execute a SSH command and returns the execution result.

LogResult records result log.

NodeExec execs the given cmd on node via SSH.

NodeSSHHosts returns SSH-able host names for all schedulable nodes.

SSH synchronously SSHs to a node running on provider and runs cmd.

SSHPort is tcp port number of SSH.

Result holds the execution result of SSH command.