Distributed Systems Administration Utilities User's Guide, Linux, March 2009

Table 1-3 Command Fanout Commands (continued)
When to Use itWhat it DoesCommand
To check uptime, users, and load averages.
Reports uptime(1) information for
multiple systems. In a Serviceguard
cluster, issues command clusterwide by
default.
cuptime
To broadcast a message to all logged-in
users across a group of systems.
Displays a wall(1) broadcast message
on multiple hosts. In a Serviceguard
cluster, issues command clusterwide by
default.
cwall
Table 1-4 Utility Setup Command
When to Use itWhat it DoesCommand
To greatly simplify ssh key distribution.
pdsh and the command fanout
(cexec-related) commands all rely on a
proper ssh key distribution. The
csync_wizard requires ssh access to
managed clients. For example, in a
Serviceguard cluster, this allows ssh access
from any member to any other member, so
pdsh and cexec can be used from any
cluster member.
For the current user, performs a secure
shell (ssh) public key distribution to
multiple systems.
csshsetup
1.2 Open Source Components
The open source components and their commands are described in the following table. These
open source components used by DSAU are based on the high level cfengine language. For
additional information on cfengine, see the cfengine manpage; for the individual commands,
see their respective manpages and open source documentation at /opt/dsau/doc. For supported
open source options, refer to Appendix B, HP-Supported Open Source Options.
Table 1-5 Open Source cfengine Commands
What it DoesCommand
System configuration agent that performs the configuration actions defined in a
configuration policy file.
cfagent
A scheduling and report service. This is an optional component.
cfexecd
Security key generation tool. cfkey is run once on every host to create a
public/private key pair.
cfkey
Tool to activate a remote cfagent.cfrun
A file server and remote activation service.
cfservd
Table 1-6 Open Source pdsh Commands
What it DoesCommand
Formats output from pdsh commands; consolidates identical output from multiple
hosts.
dshbak
Tool to make file and directory copies in parallel to a set of remote systems.
pdcp
Tool to execute shell commands in parallel across a set of systems.
pdsh
1.2 Open Source Components 13