After upgrade to NetBackup 10.1.1, the Primary server's nbatd service won't start / won't stay running.

Problem

After upgrade to NetBackup 10.1.1, the Primary server's nbatd service won't start.
 

Error Message

Note the /usr/openv/logs/nbatd/* log files will not be updated when nbatd tries to start.

Only the /var/log/messages log captures this error:

V-18-24590 Unable to retrieve cred mgr directory from config
 

Cause

Problems with the NetBackup service user account (typically nbsvcuser). Note that this issue occurred on a Linux OS platform. It is unknown if this issue can occur on other supported OS platforms.
 

Solution

1. Confirm the name of the NetBackup service user from the output of:
/usr/openv/netbackup/bin/nbgetconfig | grep SERVICE_USER

2. Stop all NetBackup services.

3. Use the "/usr/openv/netbackup/bin/goodies/nbserviceusercmd --changeUser" command to temporarily change the service user to 'root' (specify root when prompted).

4. Start NetBackup services and confirm nbatd starts and stays in a running state.

5. Stop all NetBackup services.

6. Change the service user account from root back to NetBackup SERVICE_USER user account obtained in step 1 by re-running "/usr/openv/netbackup/bin/goodies/nbserviceusercmd --changeUser" command and specify the service user when prompted.

7. Start NetBackup services and confirm nbatd starts and stays in a running state.