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Unable to access PC URL after successful upgrade


Article ID: 225060


Updated On:


CA Performance Management - Usage and Administration DX NetOps


I am unable to access PC URL after CA PM upgrade to 21.2.2.

Upgrade was successful

All services are up

URL was accessible after upgrade but all of a sudden stopped working and showing site cannot be reached.


The error seen was http 503 Service Unavailable




Incorrect ulimit


Dx NetOps Performance Management 20.2


1. Changed ulimit -n 65536 per the documentation as it was previously 4096

2. Open the /etc/security/limits.conf file, and then add the following lines:
# Added by Performance Center
* soft nofile 65536
# Added by Performance Center
* hard nofile 65536

3. Restart the console and DM services:

  • systemctl stop caperfcenter_console
  • systemctl stop caperfcenter_devicemanager
  • systemctl start caperfcenter_devicemanager  ---> wait 1 minute for it to fully start up
  • systemctl start caperfcenter_console