Data Aggregator Fails to Start After Upgrade Due to Missing SSL Password

Products

• Network Observability

Issue/Introduction

After upgrading a Data Aggregator (DA) the DA dadaemon service fails to stay running.

When reviewing the $DA_HOME/IMDataAggregatordata/logs/netops-data-aggregator.log file after running the "systemctl start dadaemon" command we see it try to start. It quickly fails with the following error.

2026-08-29T10:25:29,475 | INFO  | main             | DataAggregator                   | framework.boot.StartupInfoLogger   53 |  -  -  |  | Starting DataAggregator v25.4.9.9 using Java 17.0.19 with PID 27001 ($DA_HOME/IMDataAggregator/data-aggregator.main.jar started by root in $DA_HOME/IMDataAggregator)
2026-08-29T10:25:29,487 | INFO  | main             | DataAggregator                   | framework.boot.SpringApplication  652 |  -  -  |  | No active profile set, falling back to 1 default profile: "default"
2026-08-29T10:25:34,658 | WARN  | main             | rvletWebServerApplicationContext | pport.AbstractApplicationContext  636 |  -  -  |  | Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server
2026-08-29T10:25:34,680 | INFO  | main             | ConditionEvaluationReportLogger  | .ConditionEvaluationReportLogger   82 |  -  -  |  | 
Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2026-08-29T10:25:34,717 | ERROR | main             | SpringApplication                | framework.boot.SpringApplication  857 |  -  -  |  | Application run failed
org.springframework.context.ApplicationContextException: Unable to start web server
...
Caused by: java.lang.IllegalStateException: Unable to create trust store: Could not load store from '$DA_HOME/IMDataAggregator/config/ssl/truststore'
...
Caused by: java.lang.IllegalStateException: Could not load store from '$DA_HOME/IMDataAggregator/config/ssl/truststore'
...
Caused by: java.io.IOException: keystore password was incorrect
...
Caused by: java.security.UnrecoverableKeyException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.

Environment

DX NetOps Performance Management Data Aggregator with HTTPS enabled

Cause

The app.SSL_TRUSTSTORE_PASSWORD variable is missing or incorrectly set in the application.properties file post-upgrade.

Resolution

1. Open /opt/IMDataAggregator/config/application.properties in a text editor.
2. Locate the app.SSL_TRUSTSTORE_PASSWORD variable.
3. Set the value to match the app.SSL_KEYSTORE_PASSWORD or the correct truststore password.
4. Save and close the file.
5. Restart the dadaemon service using systemctl restart dadaemon.