Maintaining a cluster domain using Db2 High Availability Instance Configuration Utility (db2haicu)

When you are modifying the cluster domain model of your clustered environment using db2haicu, the database manager propagates the related changes to your database manager instance and cluster configuration.

Before you begin

Before you can configure your clustered environment using db2haicu, you must create and configure a cluster domain. For more information, see Creating a cluster domain using Db2 High Availability Instance Configuration Utility (db2haicu)

About this task

db2haicu maintenance tasks include adding cluster elements such as databases or cluster nodes to the cluster domain, and removing elements from the cluster domain. db2haicu maintenance tasks also include modifying the details of cluster domain elements such as the failover policy for the database manager instance.

Procedure

  1. Run db2haicu
    When you run db2haicu in maintenance mode, db2haicu presents you with a list of operations you can perform on the cluster domain:
    • Add or remove cluster nodes (machine identified by hostname)
    • Add or remove a network interface (network interface card)
    • Add or remove database partitions (partitioned database environment only)
    • Add or remove a Db2 High Availability Disaster Recovery (HADR) database
    • Add or remove a highly available database
    • Add or remove a mount point
    • Add or remove an IP address
    • Add or remove a non-critical path
    • Move database partitions and HADR databases for scheduled maintenance
    • Change failover policy for the current instance
    • Create a new quorum device for the cluster domain
    • Destroy the cluster domain
  2. Select a task to perform, and answer subsequent questions that db2haicu presents.

Results

The database manager uses the information in the cluster domain to coordinate with your cluster manager. When you configure your database and cluster elements using db2haicu then those elements are included in integrated and automated cluster configuration and administration provided by the Db2 High Availability (HA) Feature. When you use db2haicu to make a database manager instance configuration change, the database manager makes the required cluster manager configuration change for you so that you do not have to make a subsequent call to your cluster manager.

What to do next

For more information, see: Troubleshooting Db2 High Availability Instance Configuration Utility (db2haicu)