SelectFromPolicy
System Automation for Multiplatforms uses the
SelectFromPolicy persistent attribute to determine the policy to be used in
making a selection from the equivalency. You can modify this attribute when the resources
referencing the equivalency are offline. Possible policies:
- Any (the default)
- In this case, if a resource contained within an equivalency fails, System Automation for Multiplatforms chooses any resource without referring to a pre-specified order of selection.
- Ordered
- In this case, if a resource contained within an equivalency fails, System Automation for Multiplatforms always starts from the beginning of the
selection list. Note: An Ordered policy may not be used when a dynamic
SelectStringis used.
There are additional settings for the
SelectFromPolicy persistent attribute,
which can be combined with the Any or Ordered setting to effect a particular automation
behavior: - Failback
- The Failback option can only be specified for an Ordered policy. If the option is
specified, System Automation for Multiplatforms will fail back the
resources to the node hosting the first member of the equivalency when the first member
becomes available again.
Note that this feature has an impact on move requests against resource groups (see also Moving resource groups): If an equivalency with a
Failbackpolicy is involved in a move request, the move of the resource group is performed, but immediately after the resources are Online on the target node, theFailbackoption of the equivalency causes the resource group to be moved back to the original node. - NoFailure
- If the
NoFailureoption is specified, resources that have aDependsOnrelationship to the equivalency will not be set toFailed Offlineif anOnlinerequest against these resources does not succeed within the Online timeout interval. This implies that these resources will be failed over to another node only if theMonitorCommandfor these resources returns Failed Offline. - NoControl
- The NoControl option identifies the members of the equivalency as shadow resources. In
this case, System Automation for Multiplatforms will not start or
stop the members of the equivalency but will only react to changes of the
OpStateof the equivalency resource members. By default, System Automation for Multiplatforms will start and stop controllable resources within an equivalency, for example, of classIBM.Application.