Select the policy for a high availability group
Every high availability group has an associated policy. The high availability manager uses this policy to determine which members of a high availability group to put in the active state.
Before selecting a policy for a high availability group, review the following topics:
- High availability groups
- High availability group policy modification guidelines
- High availability group policies
We should also know:
- The name of the core group to associate with the new policy.
- The name of the high availability group that we want this policy to control.
- The function, such as transaction log recovery or messaging engine, associated with this high availability group.
- The policy types, such as One of N or Static, that this function supports.
- The type of policy we want to create.
- The policy settings, such as failback, and preferred servers only, to configure for this policy.
We have multiple policies defined for a high availability group, and we want to specify which of these policies the high availability manager uses to govern the group.
Select a policy for a high availability group
- In the administrative console, click...
- Servers > Core Groups > Core group settings > core_group_name
- Click the Runtime tab to determine both the name of the high availability group, and the name of the policy currently controlling the group. See View high availability group information for more information on how to perform this step. We must have at least one of the group members running.
- Click the Configuration tab to determine the match criteria defined in the current high availability group policy.
- Use the information obtained in the previous steps and update the match criteria for the policy we are selecting. The match criterion must contain all of the match criteria from the original policy, and at least one additional attribute from the name of the high availability group.
- Click OK and then click Review.
- Select Synchronize changes with nodes, and then click Save.
The high availability manager uses the new policy to govern the designated high availability groups.
Related: