NetOps Portal is not connecting to the Data Aggregator

Products

• CA Performance Management
• Network Observability

Issue/Introduction

Performance Management is reporting it is unable to contact the Data Aggregator "A communication failure occurred while synchronizing with the data source"

Testing the Data Aggregator data source also fails

Checking the Data Aggregator, dadaemon and activemq are running and it is listening on port 8581

But when you try to connect via web browser to http://<DA>:8581 you get an error connecting

Running curl http://<DA>:8581 from the DA itself, also gets a 404 error

Environment

DX NetOps Performance Management all versions

Cause

The Data Aggregator is low on disk space

Resolution

1. Free up disk space by deleting any backup "Data" folders under /opt/IMDataAggregator/apache-karaf-2.4.3/

2. Also, delete any files found in "/opt/IMDataAggregator/app/dto_error"   per KB article /opt/IMDataAggregator/app/dto error directory on the Data Aggregator filling up in CA Performance Management

3. Stop dadaemon and activemq;  "systemctl stop dadaemon" and "systemctl stop activemq"

4. Rename /opt/IMDataAggregator/apache-karaf-2.4.3/Data

5. Start dadaemon; "systemctl start dadaemon"
 

Additional Information

There may be other files that are filling up disk space. Remove anything that doesn't need to be in the /opt partition, or whichever partition Data Aggregator is install on