DX NetOps Performance Management - backup files created during Data Aggregator upgrade

Products

• CA Performance Management
• Network Observability

Issue/Introduction

When doing a DX NetOps upgrade of the Data Aggregator, backup files are automatically generated in the

/opt/IMDataAggregator/backup

directory when the installer is run.
This directory can be very large and cause disk space problems.  

Environment

DX NetOps Performance Management: All supported releases.

Cause

The /opt/IMDataAggregator/backup directory will be used to:

- save the ActiveMQ installation from under /opt/IMDataAggregator/broker/apache-activemq-*
- save the karaf installation from under /opt/IMDataAggregator/apache-karaf-*

Resolution

if you are having space issues, and if the installation being upgraded has large activemq.log files under /opt/IMDataAggregator/broker/apache-activemq-*/data,

or many data.bak* directories under /opt/IMDataAggregator/apache-karaf-*, then we can clean those extra activemq.log files or extra data.bak* directories before starting the upgrade.

Also, check the /opt/IMDataAggregator/apache-karaf-* directory and its sub-directories for any *.hprof files (these are OutOfMemory dumps that may have been created).  
Those can be deleted as they are probably old and no longer of use for debugging purpose.

once the upgrade is complete and has been running for a few days, the entire backup directory can be deleted.

This will save space, as well as remove any older files that may trigger a security scan due to old or eol versions.

Additional Information

The same directory structure will be found on the data collectors as well:

/opt/IMDataCollector/backup  (your path may vary)

And these files can also be deleted once the upgrade is verified.