You can view the service logs for NIOS for various status messages.
Complete the following steps to view the logs:
Log on to the Infoblox Portal.
Go to Servers.
Go to [NIOS Grid Manager] > General Information > Logs.
You can see the logs specific to the NIOS Grid Manager.
The following status messages are shown:
NIOS Grid Manager moved from one host to another (HA Failover/GMC promotion)
Federation is disabled (cleaning up federation related infra resources).
Cleanup failed.
Grid Connected.
Grid Disconnected.
Failed to receive service status from NIOS Grid.
You can also go to Monitor > Logs > Service Logs and filter the logs by NIOS Grid Manager.