SpectroSERVER shows error related to core file configuration

Products

• Spectrum
• Network Observability

Issue/Introduction

When starting the SpectroSERVER the following error is observed in the VNM.OUT messages. 

Nov 16 11:40:50 ERROR TRACE at VNM.cc(493): SpectroSERVER unable to set core unlimited. The system level error was: Operation not permitted 

Environment

All supported CA Spectrum releases

Cause

The ulimit value for core files isn't set properly. The Spectrum and/or root user does not have the rights to set ulimit and the error is thrown when it tries to set ulimit.

This is observed in the following output: 
[$SPEC_USER@SS_HostName ~]$ ulimit -a 
... 
core file size (blocks, -c) 0 

[$SPEC_USER@SS_HostName ~]$ cat /proc/27725/limits 
... 
Max core file size 0 0 bytes 

[$SPEC_USER@SS_HostName ~]$ cat /proc/27768/limits 
... 
Max core file size 0 0 bytes 

NOTE: The number in the /proc paths are the Process IDs (PID) for the processd and SpectroSERVER services.

Resolution

Run "ulimit -c unlimited" as the root user. That will set the core file size config to unlimited. 

Once that is set, next time the SS is started as the non-root Spectrum user it will find the setting is correct and won't try to set it. 

That should result in no error being seen related to the inability to set the value.

Additional Information

Alternative solution: Grant the Spectrum user rights to set ulimit values at the OS level.