Creating a cluster: Create first cluster member

Use this page to specify settings for the first cluster member.

There are two ways to create the first member of a cluster:

When you create the first cluster member, a copy of that member is stored as part of the cluster data and becomes the template for all additional cluster members that you create.

When adding servers to a cluster, remember that the only way to remove an application server from a cluster is to delete the application server from the list of cluster members.

Member name

Specifies the name of the application server that is created for the cluster.

The member name must be unique on the selected node.

Select node

Specifies the node on which the application server resides.

Short name

Specifies the short name for this cluster member. This field only applies to the z/OS platform.

The short name is the default z/OS job name and identifies the cluster member to the native facilities of the operating system, such as Workload Manager (WLM), Automatic Restart Manager, SAF (for example, RACF), started task control, and others.

If you specify a short name for a cluster member, the name:

If you do not specify a short name, the system assigns a default short name that is automatically unique within the cell. You can change the generated short name to conform with your naming conventions.

Weight

Specifies the amount of work that is directed to the application server.

If the weight value for the server is greater than the weight values that are assigned to other servers in the cluster, the server receives a larger share of the cluster workload. The value can range from 0 to 20. Enter zero to indicate that you do not want requests to route to this application server unless this server is the only server that is available to receive requests.

On z/OS®, weight is used to balance some of the workload types, but others are balanced by the z/OS system.

Core group

Specifies the core group in which the application server resides. This field displays only if you have multiple core groups configured. You can change this value only for the first cluster member.

Generate unique HTTP ports

Specifies that a unique HTTP port is generated for the application server. By generating unique HTTP ports for the application server, you avoid potential port collisions and configurations that are not valid.

Select basis for first cluster member:

Specifies the basis you want to use for the first cluster member.

Important: The basis options are available only for the first cluster member. All other members of a cluster are based on the cluster member template which is created from the first cluster member.



Related concepts
Clusters and workload management
Related tasks
Creating clusters
Related reference
Creating a cluster: Basic cluster settings
Creating a cluster: Create additional cluster members
Creating a cluster: Summary settings
Commands for the AdminTask object using wsadmin scripting
Reference topic    

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Last updated: Oct 22, 2010 12:21:29 AM CDT
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