Install and configure IBM® Load
Balancer to distribute workload among a cluster of these type of servers: Sametime® Proxy Server, Sametime Meeting Server,
Media Manager Conference Manager, or Media Manager SIP Proxy/Registrar,
and Sametime Community
Server.
Before you begin
Create the cluster of servers first. Then configure the
cluster and then start the deployment manager (the Sametime System Console)
as well as all node agents and application servers in the cluster.
IBM Load Balancer is not required for a Sametime clustered deployment;
you can use any load-balancing mechanism that supports HTTP session
affinity so that a user is repeatedly routed to the same server during
a single session. IBM Load Balancer
is included in the Sametime package
with the other IBM WebSphere® components.
About this task
If you are using a load balancer with TURN Servers, do not
use this procedure. Instead, see the section Deploying a load
balancer with Sametime TURN
Servers.
Procedure
-
On the computer where you will install IBM Load Balancer,
log on as root (AIX® or Linux™) or as the system administrator (Microsoft™
Windows™).
- Find the software packages
you need to download.
- Download the packages.
- Extract all downloaded packages.
- Navigate to the folder where you extracted the installation
package, locate the folder for IBM Load
Balancer, and start the installation program.
- After you have installed IBM Load
Balancer, configure two static IP addresses for it:
- Non-Forwarding Address: The NFA is the address of the server
itself. It is used for logging in and administering the load balancer.
- Cluster Address: This is the address by which clients and
other servers will access the cluster. It must be DNS-resolvable.
For example, suppose your cluster contains two nodes, and
you configure an IBM Load Balancer
for the cluster. Your IP addresses will look like this:
Table 1. Sample host names and IP addresses for a Sametime cluster with IBM Load Balancer
Fully qualified host name |
Server's role in deployment |
Server's IP address |
Load balancer: loadbal.example.com
Cluster: st-cluster.example.com |
Load balancer (Cluster address) |
Load balancer (NFA): 192.0.2.15
Cluster: 192.0.2.2 |
stconsole.example.com |
deployment manager (Sametime System Console) |
192.0.2.3 |
svr1.example.com |
Primary Node (a Sametime server) |
192.0.2.4 |
svr2.example.com |
Secondary Node (a Sametime server) |
192.0.2.5 |