/ 4.6. Specifying Resource Failback Nodes (Resource Stickiness) | ||||
|---|---|---|---|---|
 | 4.5. Specifying Resource Failover Nodes | 4.7. Configuring Resource Monitoring |  | |
/ 4.6. Specifying Resource Failback Nodes (Resource Stickiness) | ||||
|---|---|---|---|---|
| 4.5. Specifying Resource Failover Nodes | 4.7. Configuring Resource Monitoring | | |
A resource might fail back to its original node when that node is back online and in the cluster. If you want to prevent a resource from failing back to the node it was running on prior to a failover, or if you want to specify a different node for the resource to fail back to, you must change its resource stickiness value. You can specify resource stickiness when you are creating a resource, or after.
Consider the following when specifying a resource stickiness value:
0:This is the default. The resource will be placed optimally in the system. This may mean that it is moved when a “better” or less loaded node becomes available. This option is almost equivalent to automatic failback, except that the resource may be moved to a node that is not the one it was previously active on.
0:The resource will prefer to remain in its current location, but may be moved if a more suitable node is available. Higher values indicate a stronger preference for a resource to stay where it is.
0:The resource prefers to move away from its current location. Higher absolute values indicate a stronger preference for a resource to be moved.
INFINITY:
The resource will always remain in its current location unless forced
off because the node is no longer eligible to run the resource (node
shutdown, node standby, reaching the
migration-threshold, or configuration change). This
option is almost equivalent to completely disabling automatic failback
.
-INFINITY:The resource will always move away from its current location.
Procedure 4.7. Specifying Resource Stickiness
Add the resource-stickiness meta attribute to the
resource as described in
Adding or Modifying Meta and Instance Attributes.
 |
As for the resource-stickiness, specify a
value between -INFINITY and
INFINITY.
