You should use server clusters and cluster members to monitor and
manage the workloads of application servers.
Before you begin
You should understand your options for configuring application
servers. To assist you in understanding how to configure and use clusters
for workload management, consider this scenario. Client requests are distributed
among the cluster members on a single machine. A client refers to any
servlet, Java™ application, or other program or component that
connects the end user and the application server that is being accessed.
In more complex workload
management scenarios, you can distribute cluster members within the same sysplex.
About this task
Perform the following steps if you decide to use clusters to balance
your workload.
Procedure
- Decide which application server you want to cluster.
- Decide whether you want to replicate data. Replication is a service
that transfers data, objects, or events among application servers.
You can create a replication domain when creating a cluster.
- Deploy the application onto the application server.
- Create a cluster.
After configuring the application
server and the application components exactly as you want them to be, create
a cluster. The original server instance becomes a cluster member that is
administered through the cluster.
- Create one or more cluster members.
- Start the cluster.
When you start the cluster, all
of the application servers that are members of that cluster start. Workload
management automatically begins after the cluster members start.
- After the cluster is running, you can perform the following tasks:
- Stop the cluster.
- Upgrade the applications that are installed on the cluster members.
- Detect and handle problems with server clusters and their workloads.