Core group policies

Core group policies

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Use this page to create or update the various high availability group policies. For a given high availability group, the associated policy determines which members of the group should be made active.
To view this console page, click...
Servers | Core groups | Core group settings | New or existing core group | Policies

Click New to define a new policy. After a policy is defined there are several fields that you can no longer change. To change those fields, delete and redefine the policy. Click Delete after selecting a policy to delete the selected policy.
After adding a high availability group, take more actions to enable workload balancing for messaging resources. For more information about the extra actions, see the Related tasks.
All of the policy fields on this page are read-only. To change the values specified in any of these fields, click on the name of the policy you want to change. When the console page...
Core group settings | group_name | Policies | policy name

...displays, you can edit the policy properties.

Name Specifies the name of the policy.
Description Specifies a description of the policy.
Policy type Specifies the desired policy type. Restrictions:

If you are setting up a policy for a transaction manager, select One of N as the policy type.

If you are setting up a policy for a service integration bus select One of N or Static as the policy type. The default policy that IBM provides for a service integration bus uses a One of N policy type.

Following is a list of valid policy types:

All active

The All active policy indicates that the high availability manager keeps all of the application components running on all of the servers in the high availability group active at all times.

M of N

The M of N policy is similar to the One of N policy. However, it enables you to specify the number (M) of high availability group members to keep active if it is possible to do so. The number of active members must be greater than one and less than or equal to the number of servers in the high availability group. If the number of active servers is set to one, this policy is a match for the One of N policy.

No operation

The No operation policy indicates that no high availability group members are made active.

One of N

The One of N policy keeps one member of the high availability group active at all times. This is used by groups that desire singleton failover. If a failure occurs, the high availability manager starts the singleton on another server.

Static

The Static policy allows you to statically define or configure the active members of the high availability group.

Match criteria Specifies one or more name-value pairs that are used to associate this policy with a high availability group. These pairs must match attributes that are contained in the name of a high availability group before this policy is associated with that group.

Related tasks

Creating a policy for a high availability group
Configure high availability and workload sharing of service integration
Configure a One of N policy for service integration

Name	Specifies the name of the policy.
Description	Specifies a description of the policy.
Policy type	Specifies the desired policy type. Restrictions: If you are setting up a policy for a transaction manager, select One of N as the policy type. If you are setting up a policy for a service integration bus select One of N or Static as the policy type. The default policy that IBM provides for a service integration bus uses a One of N policy type.
	Following is a list of valid policy types: All active The All active policy indicates that the high availability manager keeps all of the application components running on all of the servers in the high availability group active at all times. M of N The M of N policy is similar to the One of N policy. However, it enables you to specify the number (M) of high availability group members to keep active if it is possible to do so. The number of active members must be greater than one and less than or equal to the number of servers in the high availability group. If the number of active servers is set to one, this policy is a match for the One of N policy. No operation The No operation policy indicates that no high availability group members are made active. One of N The One of N policy keeps one member of the high availability group active at all times. This is used by groups that desire singleton failover. If a failure occurs, the high availability manager starts the singleton on another server. Static The Static policy allows you to statically define or configure the active members of the high availability group.
Match criteria	Specifies one or more name-value pairs that are used to associate this policy with a high availability group. These pairs must match attributes that are contained in the name of a high availability group before this policy is associated with that group.