How to Concentrate Load Onto Fewer Nodes in the Cluster
Setting the Concentrate_load
property to false causes the cluster to spread
resource group loads evenly across all available
nodes in the resource groups' node lists. By
default, the Concentrate_load
property is set to FALSE.
If you set this property to TRUE,
the cluster attempts to concentrate resource group
load on the fewest possible nodes without
exceeding any configured hard or soft load
limits.
Note -
When specifying
Concentrate_load=TRUE, if a
resource group RG2 declares a ++ or +++ affinity
for a resource group RG1, avoid setting any
nonzero load factors for RG2. Instead, set larger
load factors for RG1 to account for the additional
load that would be imposed by RG2 coming online on
the same node as RG1. This will allow the
Concentrate_load feature to
work as intended. Alternately, you can set load
factors on RG2 but avoid setting any hard load
limits for those load factors—set only soft
limits. This will allow RG2 to come online even if
the soft load limit is exceeded.
You can only set the
Concentrate_load property in
a global cluster; you cannot set this property in
a zone cluster. In a zone cluster, the default
setting is always FALSE.
-
Assume the root role on
one active node of the cluster.
-
Start the clsetup
utility.
phys-schost# clsetup
The clsetup menu is
displayed.
-
Choose the menu item, Other cluster
tasks.
The Other Cluster Tasks Menu is
displayed.
-
Choose the menu item, Set the
concentrate_load Property of the Cluster.
The Set the Concentrate Load Property of the
Cluster Menu is displayed.
-
Type yes and press
the Return key.
The current value of TRUE
or FALSE is displayed.
-
Type yes to change
the value and press the Return key.
-
Type yes to proceed
with the update and press the Return key.
-
Press the Return key to return to the
previous menu.
The Other Cluster Tasks Menu is
displayed.