You can specify any of the following for type:
- CONDDEATH
- The entity has died.
- CONDABNORMALDEATH
- The entity has died an abnormal death. This condition
is triggered whenever an entity dies by a mechanism
that results in the generation of a core file (see
dumper
in the Utilities Reference for details).
- CONDDETACH
- The entity that was being monitored is detaching. This
ends HAM's monitoring of that entity.
- CONDATTACH
- An entity for which a placeholder was previously
created (someone has subscribed to events relating
to this entity), has joined the system. This is
also the start of the monitoring of the entity
by a HAM.
- CONDHBEATMISSEDHIGH
- The entity missed sending a heartbeat message specified
for a condition of “high” severity.
- CONDHBEATMISSEDLOW
- The entity missed sending a heartbeat message specified
for a condition of “low” severity.
- CONDRESTART
- The entity was restarted. This condition is true
after the entity is successfully restarted.
- CONDANY
- This condition type matches any condition type.
It can be used to associate the same actions
with one of many conditions.
The CONDATTACH, CONDDETACH and
CONDRESTART conditions are
triggered by the HAM, when entities attach, detach, or restart
respectively. The CONDHBEATMISSEDHIGH and
CONDHBEATMISSEDLOW
conditions are triggered internally by the HAM when it
detects the missed heartbeat conditions, as defined by the
entities when they indicated their original intent to heartbeat.
CONDDEATH is triggered whenever an entity dies.
CONDABNORMALDEATH
is triggered only when an abnormal death takes place, but such an
abnormal death also triggers a CONDDEATH condition.
You use the detach condition to perform some
actions whenever a monitored entity properly detaches from
a HAM. After this point, the HAM will no longer monitor
the entity. In effect, you can use this to
“notify” interested clients when the HAM can no
longer provide any more information about the detaching
entity.
The restart condition is asserted and triggered by
a HAM automatically if an entity dies and is restarted.