System events that trigger hardware-assisted takeover
The remote management device (Service Processor) can detect many events and generate alerts. The partner node might initiate takeover, depending on the type of alert received.
| Alert | Takeover initiated upon receipt? | Description |
|---|---|---|
| power_loss | Yes | A power loss has occurred on the node. The remote management device has a power supply that maintains power for a short period after a power loss, allowing it to report the power loss to the partner. |
| l2_watchdog_reset | Yes | The system watchdog hardware has detected an L2 reset. The remote management device detected a lack of response from the system CPU and reset the system. |
| power_off_via_sp | Yes | The remote management device was used to power off the system. |
| power_cycle_via_sp | Yes | The remote management device was used to cycle the system power off and on. |
| reset_via_sp | Yes | The remote management device was used to reset the system. |
| abnormal_reboot | No | An abnormal reboot of the node has occurred. |
| loss_of_heartbeat | No | The heartbeat message from the node was no longer received by the remote management device. Note This alert does not refer to the heartbeat messages between the nodes in the |
| periodic_message | No | A periodic message has been sent during a normal hardware-assisted takeover operation. |
| test | No | A test message has been sent to verify a hardware-assisted takeover operation. |
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