README - sshc

sshc is a perl script capable of executing commands across groups of hosts.

It is meant to be simple and compact. There are no dependencies on external perl modules. All the code is contained in a single source file, and configuration is read from a single rc file in the user's home directory.

USAGE

% sshc usage: sshc user cluster_name command i.e. sshc username clustername "uname -a"

INSTALLATION

To get started, simply place sshc in your path, copy sshcrc.sample to ~/.sshcrc, and add your cluster/host names.

That's it.

EXAMPLE

% cat ~/.sshcrc aws pluto.aws.foo jupiter.aws.foo

% sshc pchuck aws "uptime ; uname -a"

Cluster 'aws' contains 2 hosts. [pchuck] executing commands..

[0] pluto.aws.foo> uptime ; uname -a 13:00:48 up 69 days, 15:35, 0 users, load average: 0.00, 0.00, 0.00 Linux pluto.aws.foo 2.6.18-238.9.1.el5xen #1 SMP Tue Apr 12 19:32:47 EDT 2011 i686 i686 i386 GNU/Linux [1] jupiter.aws.foo> uptime ; uname -a 13:00:49 up 26 days, 14:35, 0 users, load average: 0.82, 0.73, 0.75 Linux jupiter.aws.foo 2.6.18-238.19.1.el5xen #1 SMP Fri Jul 15 08:57:45 EDT 2011 i686 i686 i386 GNU/Linux

2s elapsed. 2 of 2 commands executed successfully.

Copyright 2002-2011, Patrick Charles

sshc is free software: you can redistribute it and/or modify it under the

terms of the GNU General Public License as published by the Free Software

Foundation, either version 3 of the License, or (at your option) any later

version.

sshc is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR

A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with

sshc. If not, see http://www.gnu.org/licenses/.