B.3 Local host monitoring history output timing

This subsection explains the times at which HA Monitor outputs local host monitoring history.

When HA Monitor starts on the local host

HA Monitor issues a message reporting that collection of monitoring history has started.
When the local host has recovered from a slowdown that lasted longer than the amount of time set for collection of host monitoring history

A message indicating occurrence of slowdown is issued.
When the local host has been restarted after hot standby processing resulting from a slowdown of the local host

A message indicating occurrence of a slowdown is issued.
When HA Monitor on the local host has terminated

A message indicating that collection of monitoring history has ended is issued.

The following figure shows an example of local host monitoring history output timing.

Figure B‒3: Local host monitoring history output timing

The following explains the local host status at the times indicated by numbers in the figure:

HA Monitor on the local host starts.

HA Monitor starts monitoring the local host and starts collection of monitoring history (ID: 0301).
A slowdown occurs that lasts longer than the amount of time set for collection of host monitoring history.
The slowdown status is resolved before the host failure monitoring time is reached.

HA Monitor on the local host collects monitoring history (ID: 0303) when the local host has recovered from the slowdown.
HA Monitor on the local host is terminated.

HA Monitor on the local host terminates monitoring of the local host and collects monitoring history (ID: 0302).