Cisco Cisco Workload Automation 6.3 User Guide

Page of 412
33
 
Introduction
CWA Components
Command Line Interface (CLI)
The Command Line Interface program provides access to CWA using 
the sacmd.cmd (Windows) or sacmd.sh (Unix/Linux) 
program through the MS-DOS command prompt or Unix command utility. You can do things like automate CWA job 
control functions by including commands in scripts or by embedding job control functions in the code running your 
company processes. The command line program can also be used from the CWA Web Client.
The Command Line Interface program is fully documented, including installation, in the 
. 
Agents
An agent is a separate installation of CWA
 that runs jobs on behalf of the Master. Agents help you to automate the 
execution of jobs that you know need to be performed on a regular basis, Offloading jobs to agents frees the Master for 
intensive scheduling tasks such as production compiles. Agents exist for various platforms. For the current list of the 
types of agents available for CWA, see “Installing Agents” in the 
Cisco Workload Automation Installation and 
Configuration Guide
. The Windows Agent and the Unix Agent are the two most commonly used agents.
Each agent can connect to a Master by specifying the Master-to-agent communication port and the Master-to-agent file 
transfer port numbers. 
Adapters
CWA provides adapters for many software products to enable connectivity to and access by CWA. The Master has an 
Adapter Host it uses to manage the adapters and is the interface that the adapters use to connect to the Master. Adapters 
are provided with the base CWA installation but must be licensed. In some cases, adapters need to be installed or 
configured. For a list of the adapters provided for CWA, see “Installing Adapters” in th
Cisco Workload Automation 
Installation and Configuration Guide
Backup Master 
The Backup Master is used in a fault tolerance configuration. Fault tolerance requires one Backup Master for each Primary 
Master. The Backup Master operates exactly like the Primary Master, but is activated only if the Primary Master 
experiences a system, network or —machine failure. The Backup Master must run on the same platform and version of 
software used by the Primary Master. The hardware specifications of the backup machine should be equal or greater 
than the specifications for the primary machine.
The Backup Master must specify the Backup-to-Master port number for transferring scheduling data from the Primary 
Master to keep the Masters synchronized.
Fault Monitor 
The Fault Monitor is part of the CWA fault tolerance configuration. The Fault Monitor continually monitors a Primary 
Master and Backup Master for error conditions. If a failure indicator appears on the Primary Master, the Fault Monitor 
transfers control to the Backup Master. The Fault Monitor must be installed on a separate machine independent from the 
primary and backup machines.
Remote Master
A Remote Master is simply an additional CWA Master that is installed in a different environment. The Remote Master 
allows a connection to another CWA Master for sharing global CWA variables between CWA environments. Variables 
definitions must have “Publish value to remote masters” selected in the CWA environment where they reside prior to 
being available through a remote master connection.