System Requirements

The requirements for installation of Universal Agent 7.7.0 for IBM i are:

• IBM i V7R3M0 or above.
• TCP/IP.
• User profile with *ALLOBJ, *SPLCTL, *JOBCTL, and *SECADM authorities.
• About 360 megabytes of disk space.
• Network-attached workstation.

The Universal Agent 7.7.0 for IBM i installation process creates a product user profile, UNVUBR770, that is given *ALLOBJ special authority. UNVUBR770, with *ALLOBJ special authority, is required to successfully complete the installation.

The *BASE option contains the complete installation. This includes all of the components and utilities listed above.

Platform Requirements

Since platform requirements may change with new releases of a product, please consult the Platform Support for Universal Controller 7.7.x and Universal Agent 7.7.x page to make sure that your platform is supported before performing an installation.

Libraries and Logs

Under the IBM i native file system, Universal Agent writes to product files residing in various libraries and write information to job logs.

This section specifies the following information for various libraries and logs:

• Estimated amount of space required
• Required security access
• Location of the production files

Universal Broker Job Log

Under IBM i, Universal Broker writes its messages to the UBROKER job log.

Space

Job log file growth is dependent on use of the Workload Automation Servers. The disposition and size of the job log depends on the job definition as well as system variables QJOBMSGQMX (maximum job log size) and QJOBMSGQFL (action when job log is full).

Security

Since Universal Broker uses a normal job log, no special security is required.

Universal Automation Center Agent (UAG) Logging

Under IBM i, Universal Automation Center Agent (UAG) writes some messages to the job log for the UNVSRV prestart job under which it runs.  However, messages are typically only sent to the UNVSRV job log in the case of unexpected errors.  The primary logging destination for UAG is the /var/opt/universal/log directory in the IFS file system.  The current log file is named agent.log.

Space

Job log file growth is dependent on use of the Universal Agent Servers. The disposition and size of the job log depends on the job definition as well as system variables QJOBMSGQMX (maximum job log size) and QJOBMSGQFL (action when job log is full).

Security

For the UAGSRV job log, no special security is required.  However, for the primary agent log file which resides in IFS, the Universal Broker user profile (UNVUBR770) requires read/write access to the log directory and read/write access to all files in the log directory. No other Universal Agent components use the log directory at this time. No general user access is required.

Trace File Location Library

Universal Broker and its Server components create product trace files when configured to do so. A trace file is used by Stonebranch, Inc. Customer Support to resolve product problems.

On IBM i, Universal Agent trace files normally are written to *CURLIB (current library). Under Universal Broker and the associated servers, the current library is the temporary library designated at installation time (UNVTMP770).

Otherwise, current library is the default current library of the user.

Space

Trace files can grow to significant size, depending on how long the trace is active and how much work the program is doing during the tracing period. Due to the information associated with IBM i pointers and fact that physical database files are fixed record lengths, trace files quickly can grow very large on a system with high Universal Broker and server activity.

If the trace file size is increased beyond 500,000 records, the maximum file size must be changed or the associated job will hang. The hang results from a system generated inquiry message, which is issued when the maximum file size is exceeded. By default, trace files wrap before reaching the maximum file size, thus avoiding the system inquiry message.

The TRACE_FILE_LINES configuration option sets the number of records at which the trace file wrapping occurs. When the maximum size is reached, the trace file will wrap to the beginning.

No space is required under normal operation for trace files. Trace files are requested by Stonebranch, Inc. Customer Support only for problem resolution. When trace files are required, at least 40MB of disk space should be available.

Security

The UNVUBR770 user profile requires at least *CHANGE authority to the UNVTMP770 library to create and use the Universal Broker and server trace files. No general user access is required.

Spool Library

The spool library is used to store the following types of information:

• Execution information for Universal Agent components started by Universal Broker, UBR_CMP_DB.

Spool files are stored in the UNVSPL770 library.

Space

The spool files are located in the UNVSPL770 library. The amount of disk space required for the spool directory depends on these factors:

1. Whether or not activity monitoring is turned on.
2. The event generation configuration
3. The level of activity experienced by product components

Security

The UNVUBR770 user profile requires at least *CHANGE authority to the UNVSPL770 library to create and use the spool files. No general user access is required.

No other Universal Agent for IBM i components access the spool library.

UAG Cache

UAG cache is used by Universal Automation Center Agent (UAG) for storing standard I/O files.

Space

Cache files are located, by default, in directory /var/opt/universal/uag/cache.

Cache files are created for each job that is run by the Agent. They remain in the cache until they are purged by an automated purge process scheduled nightly by Universal Controller. You can configure the number of days that files remain in the cache via the Universal Controller user interface (see the Agent Cache Retention Period in Days Universal Controller system property).

The amount of disk space required for the cache directory depends on:

1. Number of jobs you estimate will run during the cache retention period you specified.
2. These files remain until they are purged by the automated cache purge process scheduled by the Controller daily at midnight.
3. Average size of the user processes standard output and error files.

When these numbers have been determined, the average amount of disk space is calculated with the following formula:

(RETENTION PERIOD x MAX-JOBS) x (AVERAGE-STDOUT-SIZE + AVERAGE-STDERR-SIZE) = required disk space.

For example:

If the files are purged every 7 days, and you run 1200 jobs on that agent server daily, and the average size of the STDOUT + STDERR files is 3,000 bytes, the average amount of required disk space is 25MB (7 x 1,200 x 3000).

The Universal Automation Center Agent Server automatically redirects the standard output and standard error files to the cache directory with no required user input.

Universal Automation Center Agent requires read/write access to the UAG cache directory. No other Universal Agent components access the cache directory. No general user access is required.

UAG Extension Directory

UAG extension directory is used by Universal Automation Center Agent (UAG) for storing deployed Universal Extensions.

Space

Extension files are located, by default, in directory /var/opt/universal/uag/extensions.

Extension files are created when the Universal Controller deploys a Universal Extension to the agent. Extension deployment can occur preemptively during agent registration, or on demand during task submission.  You can configure extension deployment with the following options:

• Extension Acceptance List
• Extension Deploy on Registration

The amount of disk space required for the extension directory depends on:

1. Number of extensions you estimate will be deployed to the agent.
2. Average size of the extensions.
3. These files remain until they are manually purged.
4. Only one extension deployment is required for all tasks of that type.

When these numbers have been determined, the average amount of disk space is calculated with the following formula:

(MAX-EXTENSIONS) x (AVERAGE-EXTENSION-SIZE) = required disk space.

For example:

If you expect to deploy 10 different extension types, and the average size of an extension is 1MB, the average amount of required disk space is 10MB (10 x 1).

The Universal Automation Center Agent Server automatically synchronizes deployed extensions with the version currently installed in the Controller with no required user actions.

Security

Universal Automation Center Agent requires read/write access to the UAG extension directory. Any user executing extension tasks must have read access to the extension directory.