Tasks for a new high availability (HA) installation - additional applications

This chapter provides information on how to install and configure the high availability and application components.

Active-Passive

One application instance per node with one to one failover capabilities

The active node of the cluster hosts the virtual server. The second node is a dedicated redundant server able to take over and host the virtual server in the event of a failure on the active node.

Active-Active

Multiple application instances per cluster node

For example, in a two-node cluster with two application instances, a different instance is online on each of the two servers. If a failure occurs, the instance on the failing node is brought online on the other server, resulting in two instances online on one server.

The following table outlines the high-level objectives for implementing the configuration and the tasks for each objective.

Table: Task list: New High Availability configuration

Objectives

Tasks

See Reviewing the InfoScale installation requirements.

  • Verify the hardware and software prerequisites.

  • Review the requirements.

See Reviewing the configuration.

Review the configuration

See Configuring the storage hardware and network.

Configure the storage hardware and network.

See About installing the Veritas InfoScale products.

Install the product.

See Configuring disk groups and volumes.

  • Plan your storage layout.

  • Create disk groups.

  • Create volumes.

  • Manage disk groups and volumes.

See Configuring the cluster using the Cluster Configuration Wizard.

Use the VCS Cluster Configuration Wizard (VCW) to set up the cluster

See About installing and configuring the application or server role.

  • As necessary, install the application program files on the local system drive of the first node.

  • Install files relating to the data and logs on the target storage.

  • Deport the disk groups on the first node and import them on the second node.

    Install the application on the second node.

See Configuring the service group.

  • Use the applicable wizard to create and configure the VCS service group or groups.

  • Create the application service group manually using templates from the Cluster Manager (Java Console) (if using a non-shared storage configuration).

  • Bring the service group online.

See Enabling fast failover for disk groups (optional).

  • Use the Java Console to enable the FastFailover attribute for VMDg resources.

See Verifying the cluster configuration.

  • Switch the service group to the second node.

  • Shut down an active cluster node.

See Possible tasks after completing the configuration.

  • Modify the cluster configuration.

  • Modify the application or server role service group.