Horizontal Clustering : Step by Step

Cluster across multiple physical machines

Horizontal clustering involves running multiple Java application servers that are run on two or more separate physical machines.

Like shown below where all the managed servers are in a cluster -

Machine-1
- Admin Server
- MS-1
- MS-2Machine-2
- MS-3
- MS-4

How to do Horizontal Clustering ?

1. Install weblogic server on both machines with same installation directories.
2. Create domain on primary machine where you want your Admin server and copy domain to second machine.

Step by Step -

1. Install weblogic server on both machines with same installation directories. 

2. Start domain wizard on primary & select option "create a new weblogic domain".


3. Select default first option



4. Enter a name for your domain


5. Enter Admin Server credentials, username & password


6. Select your mode ( development or production ) and jdk 

you want to use


7.Select below two options

Admin Server Name, listen address, port & enable ssl if 

required


9.  Add the number of managed servers you want for your 

domain, enter listen address, port & ssl information if 

required.


10. Create cluster


11. Assign all managed servers to the cluster ( click on each 

server one by one and click on right arrow )

12. This is the turning point for horizontal clustering -

Create two machines ( usually create it with the name of 

machines, suppose you ant clustering between to machines 

with hostname like hostname1.something.com & 

 hostname2.something.com, then create machine names like 

hostname1 & hostname2 )

Enter listen address of particular machine ( server ), like for 

mac1 enter listen address of      hostname1.something.com & 

for mac2, enter listen address of hostname2.something.com )

Enter port for nodemanager

13. Assign MS1 & MS2 to mac1 & MS3 & MS4 to Mac2, this

 will allow nodemanager to start managed  server 1 & 2 on

 machine1 ( hostname1.something.com ) and start managed

 server 3 & 4 on machine 2 (  hostname2.something.com )

14. Select create button.

Now go to Middleware Directory,  D:\Oracle\Middleware, 

make a copy of user_projects, copy it under same folder on 

another machine ( D:\Oracle\Middleware on machine 2 ).

Now start your managed servers