Table 1-3 Command Fanout Commands (continued)

Command

What it Does

When to Use it

cps

Distributes a ps(1) command to multiple

To collect process information from groups

 

hosts in parallel. In a Serviceguard cluster,

of systems simultaneously.

 

issues command cluster-wide by default.

 

 

 

 

cuptime

Reports uptime(1) information for

To check uptime, users, and load averages.

 

multiple systems. In a Serviceguard

 

 

cluster, issues command cluster-wide by

 

 

default.

 

cwall

Displays a wall(1M) broadcast message

 

on multiple hosts. In a Serviceguard

 

cluster, issues command cluster-wide by

 

default.

To broadcast a message to all logged-in users across a group of systems.

Table 1-4 Utility Setup Command

Command

What it Does

When to Use it

 

 

 

csshsetup

For the current user, performs a secure

 

shell (ssh) public key distribution to

 

multiple systems.

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.

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 Appendix A (page 87) HP-Supported Open Source pdsh Options.

Table 1-5 Open Source cfengine Commands

Command

What it Does

 

 

cfagent

System configuration agent that performs the configuration actions defined in a

 

configuration policy file.

 

 

cfexecd

A scheduling and report service. This is an optional component.

 

 

cfkey

Security key generation tool. cfkey is run once on every host to create a

 

public/private key pair.

 

 

cfrun

Tool to activate a remote cfagent.

 

 

cfservd

A file server and remote activation service.

 

 

Table 1-6 Open Source pdsh Commands

Command

What it Does

dshbak

Formats output from pdsh commands; consolidates identical output from multiple

 

hosts.

 

 

pdcp

Tool to make file and directory copies in parallel to a set of remote systems.

 

 

pdsh

Tool to execute shell commands in parallel across a set of systems.

 

 

1.2 Open Source Components 11