Adding additional managed server in new machine to the existing weblogic cluster

Version: 

WLS 10.3.6 - Clustered environment

Requirement:

Add a 3rd managed server to the existing weblogic cluster setup. Currently it has 1 Admin server and 1 Managed server running on Node 1 and another managed server running on Node 2. Our plan is to add the 3rd Managed server in Node 3 to the cluster.

Note:

Shared Storage: Storage is shared across all the nodes and same OS user/group configuration is used.  If the storage is not shared, then we need to pack the domain to new server and unpack it there.

We can add Managed Servers to a domain/cluster to increase the capacity of the system.  When a Managed Server is added to a cluster, it inherits the applications and services that are targeted to the cluster. So if we have deployed an application on top of the cluster, same would be reflected immediately on the managed server, which was added newly, when it is started up.

Steps 1: Add Managed Server

1. Login to Weblogic admin console URL
2. Click on "Lock & Edit" at the top Left corner of the console URL
3. In the left pane, expand Environment, then select Servers.
4. In the Servers table, click New button - It opens a new page -> Create a New Server - Domain Name
5. Enter the following information in that page
    - Server Name: Give the new Managed Server name (Eg: ManagedServer2)
    - Server Listen Address: Give fully qualified server name with domain here           (eg: myserver.mydomain)
    - Server Listen Port: Give same port number as of the existing managed servers since this is going to run in a different server. If same server, then port number should be different
    - Choose - "Yes, make this server a member of an existing cluster" , if this server is to be part of an existing cluster
6. Click Next
7. Review the details we provided and click Finish

Managed Server is now created. Next step is to create a machine and associate that with this managed server

Steps 2: Create a new Machine

1. Login to Weblogic admin console URL
2. Click on "Lock & Edit" at the top Left corner of the console URL
3. In the left pane, expand Environment, then select "Machines"
4. Click New button in the Machines table. It opens a new page -> Create a New Machine - Domain Name
5. Enter the following information in that page
    - Name: A suitable name for the machine. I normally give the hostname of the server without the domain name here
    - Machine OS: Choose Unix if it is a Unix flavour (Other options are virtual and other)
6. Click Next -> This will open the "Node Manager Properties" page. Enter the following information in that page
    - Type: SSL (protocol to communicate with the Nodemanager)
    - Listen Address: Give fully qualified server name with domain
    - Listen Port: Listen port. 5556 is the default
7. Click Finish

Now add managed server to this machine

Steps 3: Assign Managed Server to the Machine

1. Click on the machine name we just created. - It will open the Settings for <the new Machine> page.
2. Click on the "Servers" tab in that page
3. In the Servers table, click Add
4. Choose "Select an existing server, and associate it with this machine" option and choose the managed server we created above
5. Click Finish

Finally click on "Release Configuration"

Start up the nodemanager directly from the server where it is configured to run.
Verify that the machine status is "Reachable" in Environment => Machines => <Machine Name> => Monitoring tab
Go back to servers => Click control and select the managed server we created above. Press Start

Now we have the managed server running as part of the cluster.