Error "<Resource Not Found>" is thrown in GUI while operating on device classes under Global

Products

• VMware Smart Assurance

Issue/Introduction

Error "<Resource Not Found>" is thrown in newly installed NCM distributed setup while operating on device classes under Global in GUI.

 

Environment

NCM - 10.1.x/24.3.x

Cause

Permissions/Ownership issue in $VOYENCE_HOME/data/appserver/pops/ directory after new NCM distributed setup installation. This is determined by reviewing $VOYENCE_HOME/logs/daemon.log in application server wherein following error with regards to "popxxxx" is seen:

DEBUG [com.powerup.configmgr.deviceservice.rmi.DeviceClassConfigurationManagerImpl] (RMI TCP Connection(271)-xx.xx.xx.xx) setGlobalDeviceClassConfiguration
DEBUG [com.powerup.configmgr.deviceservice.rmi.DeviceClassConfigurationManagerImpl] (RMI TCP Connection(271)-xx.xx.xx.xx) Obtained device servers
ERROR [com.powerup.configmgr.deviceservice.rmi.DeviceClassConfigurationManagerImpl] (RMI TCP Connection(271)-xx.xx.xx.xx) Failed to write file - /opt/smarts-ncm/data/appserver/pops/pop1000/configuration/network_GLOBAL.xml
java.io.FileNotFoundException: /opt/smarts-ncm/data/appserver/pops/pop1000/configuration/network_GLOBAL.xml (Permission denied)

Resolution

The below steps are to be implemented if reported error is seen in GUI and corresponding permission denied error pertaining to $VOYENCE_HOME/data/appserver/pops/ directory is logged in daemon.log in application server: 

1. Default NCM installation suggests ownership of "ncm:voyence" assigned to $VOYENCE_HOME/data/appserver/pops/ directory. Users can review ownership alignment in application/device server and assign permission ncm:voyence to popxxxx folder and its subfolders with command "chown -R ncm:voyence popxxxx" accordingly.
2. Command "systemctl restart vcmaster" should be executed in application and device server respectively if step 1 is implemented.
3. Operations on device classes in GUI can be continued without reported "<Resource Not Found>" error being thrown anymore.