In Operator Console, I see the group count intermittently drop to (0) and no groups are seen.
The primary hub is showing errors in the logs:
Aug 14 10:17:28:350 [4116] 1 hub: (nimVerifyLogin) cmd=queue_new frm=10.244.120.5/39685 failed
Aug 14 10:17:28:578 [4116] 1 hub: verify - [target] prid=hub cmd=queue_list ip=10.244.120.5 perm=1
Aug 14 10:17:28:578 [4116] 1 hub: verify - [source] id=nis_server ip=10.244.120.5 hub=Primary-hub (OK)
Aug 14 10:17:28:602 [4116] 1 hub: verify - [target] prid=hub cmd=queue_new ip=10.244.120.5 perm=3
Aug 14 10:17:28:602 [4116] 1 hub: verify - permission denied
Release : 20.1
Component : UIM - HUB
1. Log into Infrastructure Manager
2. Go to Security->Probe Administration
3. Click "New" to add a new probe.
4. Add nis_server with "admin" permission and IP mask: *
This will be resolved in an upcoming patch (likely 20.3.1).