RMC health monitoring alerts
The Rack Management Controller (RMC) is the manager for HPE Superdome Flex Server and is the management interface between HPE OneView and Superdome Flex.
The RMC must be functioning and healthy to perform any nPartition-level operations such as monitoring, managing, or rebooting of the nPartition. HPE OneView monitors the health of the RMC periodically and generates alerts when issues are detected. When critical alerts are generated, the rack manager moves to unmanaged state.
The following are the alerts:
Unable to contact the Rack Management Controller (RMC).
- Cause
A connectivity loss has occurred between HPE OneView and the RMC. The frequency of this check is 30 minutes.
- Remediation
Check if the RMC is down. If down, bring up the RMC.
If the RMC is running:
From the main menu, select to check reachability of the RMC from HPE OneView. Resolve connectivity issues, if any.
Ensure that the RMC certificate is imported into HPE OneView. Also, ensure that the certificate is not expired or invalid.
Event subscription from the Rack Management Controller (RMC) is broken. Attempt to recreate the subscription failed as RMC's max subscription limit has been reached.
- Cause
The subscription is not active. HPE OneView either found a problem with the existing subscription or the subscription was removed. The frequency of this check is 30 minutes.
- Remediation
On the RMC, delete an existing subscription to create a vacant subscription slot for HPE OneView.
From the main menu, select to refresh and add the subscription automatically.
Event subscription from the Rack Management Controller (RMC) is broken. Attempt to automatically fix the issue failed.
- Cause
The firmware version of the RMC is not compatible with the firmware version of HPE OneView. This incompatibility may happen if the RMC firmware is updated independent of HPE OneView.
The Redfish service on the RMC is not able to handle event subscription requests.
- Remediation
Ensure the RMC and HPE OneView firmware versions are compatible.
To resolve Redfish service issues on the RMC, see the HPE Superdome Flex Server Administration Guide. If you are not able to resolve the Redfish service issues, contact your support specialist.
Unable to receive notifications from the Rack Management Controller (RMC).
- Cause
The subscription is active and HPE OneView can communicate with the RMC, but HPE OneView has not received any events from the RMC in the past 24 hours. HPE OneView sent a request to the RMC to respond with a test event. The RMC was not able to send a test event to HPE OneView.
- Remediation
From the main menu, select to check reachability of the RMC from HPE OneView. Resolve connectivity issues, if any.
Select to refresh the rack manager to resolve any event registration issues on the RMC.
Check the communications path from the RMC back to HPE OneView and make sure that there are no firewalls or routers blocking port 443, which is required by the RMC for secure communications back to HPE OneView.
Ensure that the RMC certificate is imported into HPE OneView. Also, ensure that the certificate is not expired or invalid.
For more information on HPE Superdome Flex Server alerts and error messages that are displayed in HPE OneView, see "Superdome Flex errors" in the HPE OneView Error Message Guide.