Distribution of robot update to Linux boxes causes UIM Primary hub to crash

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• CA Unified Infrastructure Management On-Premise (Nimsoft / UIM)
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)
• Unified Infrastructure Management for Mainframe

Issue/Introduction

• Distribution of robot update to some Linux (RHEL7) boxes causes UIM to crash
• 2 /robot/lib files seem to go missing on the Primary hub (RHEL7)
• In IM or AC deploying robot_update package everything freezes with no response. 
• ssh to Primary Hub and all processes are listed but service or niminit does nothing and we are forced to kill nimbus processes. Won't start either, just nimbus. 
• In each case it was found that $NIMBUS_HOME/robot/lib had lost its 2 library files. Restoring the files allows everything to start OK.
• This issue has happened on 9.33HF2 first then 9.35 Robot.

Environment

• Release : UIM 20.31
• Component : UIM - DISTSRV
• RHEL 7

Cause

- distsrv crash

Resolution

- Upgrade all 7.80 robots to 9.34

- distsrv debug package version is attached to this article and it contains some fixes for distsrv crash issues and verbose debug mode.