You
can configure multiple application servers to use the
Communications Enabled Applications (CEA) capability in a cluster
environment to balance workload demands.
About this task
To scale to two or more application servers
running CEA,
you must create a cluster that includes each application server. Clusters
are groups of servers that are managed together and participate in
workload management. You must use proxy servers to distribute the
requests to the CEA application servers, but not IBM® HTTP Servers. CEA is implemented as a converged
application that combines both HTTP and session initiation protocol
(SIP) protocols. However, IBM HTTP
Server is limited to handling the HTTP protocol. The proxy server
is a converged proxy so it handles both HTTP and SIP protocols.
Procedure
- Identify the application servers
or nodes that are running
CEA that you want to manage as a cluster.
- Create the cluster using the administrative console. For details on creating the cluster, read about creating a cluster
using basic cluster settings.
- Install a SIP
proxy server. The SIP proxy server
routes HTTP and SIP requests to the back-end application servers.
This proxy server provides high performance SIP proxy capabilities
that you can use at the edge of the network to route, load balance,
and improve response times for SIP dialogs to backend SIP resources.
For details on installing a SIP proxy server, read about installing
a SIP proxy server.
- Configure the SIP converged
proxy server. Select
the default cluster to specify where you want the SIP proxy to route
requests. After you choose a default cluster, your SIP proxy server
is functional.
Results
You have successfully
configured a cluster environment for
CEA applications.