UIM 20.3 to 20.4 upgrade -> SLA Engine won't start

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)

Issue/Introduction

After running upgrade to 20.4, sla_engine fails to start.

Controller.log shows:

Jul  9 13:35:17:366 [0264] Controller: post-install 'java -jar probes/slm/sla_engine/pre_install/packageCleaner.jar probes/slm/sla_engine/pre_install/pre_install.xml' failed, error = The system cannot find the file specified.   (2)
Jul  9 13:35:17:366 [0264] Controller: inst_execute - error in attempt to run post-install 'java -jar probes/slm/sla_engine/pre_install/packageCleaner.jar probes/slm/sla_engine/pre_install/pre_install.xml'
Jul  9 13:35:47:209 [0264] Controller: Max. restarts reached for probe 'sla_engine' (command = <startup java>)

Environment

Release : 20.4

Component : UIM - SLA_ENGINE

Cause

Files in sla_engine directory lost/missing/corrupted.

Resolution

1. Rt-click and deactivate the sla_engine probe

2. Rt-click and delete it

3. Delete the sla_engine probe folder from the filesystem

4. Redeploy the appropriate version of the sla_engine probe for the UIM version, from the local archive