Performing One-shot Operations

This section introduces the options provided for performing one-shot commands on all Puppet-managed systems without using Puppet. This is useful when the user needs to perform an action one time in every location, but does not want to enforce that action over time.

Use the PSSH Utility

Parallel Secure Shell (PSSH) has been included in SIMP for some time, but has not been installed by default.

The table below lists the steps to use PSSH.

Table: Use PSSH Procedure

Note

There is no manual page provided with PSSH; type pssh --help for further explanation.

Other SSH Options

Using the -f option forces TTY for SSH, which allows the user to run sudo commands via PSSH.

Using the -OStrictHostKeyChecking=no option connects the user to the target servers via SSH even if there is an issue with ~/.ssh/known_hosts.