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High Availability (HA)
Feature Description
When a LoadMaster is in HA mode, the following screen appears when the HA Parameters menu
option is selected:
HA Status
At the top of the screen, next to the time, icons are shown to denote the real-time status of the
LoadMaster units in the cluster. There will be an icon for each unit in the cluster. This status is
maintained via an automatic ping between the units.
Clicking on these icons opens the management interface of the relevant HA partner.
The four possible icons are:
Green
(with 'A')
Green
(without
'A')
Red/Yellow
Blue
Grey
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Figure 8-4: HA Parameters screen
Figure 8-5: HA status
The unit is online and operational and the HA units are
correctly paired.
The A in the middle of the square indicates that this is the
master unit.
The unit is online and operational and the HA units are
correctly paired.
The absence of an 'A' in the middle of the square indicates
that this is not the master unit.
The unit is not ready to take over. It may be offline or
incorrectly paired.
When the unit reboots more than 3 times in 5 minutes it
moves into a pacified state. In this state the machine is only
accessible via the direct machine WUI (not the shared WUI),
and, it is not participating in any HA activity, i.e. no changes
from the master will be received and it will not take over if
the master fails. To remove the unit from the pacified state,
log in to the pacified LoadMaster through SSH or the console
and reboot.
Both machines are active, i.e. both are set to master, and
something has gone seriously wrong. CALL KEMP Support.
Page 23 / 37
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