MATLAB: How to transition away from the Redundant Server (Triad) setup

I am interested in transitioning my Redundant (3) Server configuration to a Single (1) server setup. What steps do I need to perform on my client machines so that they see my new configuration?

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The steps for transitioning your MATLAB client machines from a Redundant Server (3 servers) to a single server will depend on the method your client machines use to locate the license server:

Redundant Server to Single Server setup using environment variables

On your client machines, you will have an existing MLM_LICENSE_FILE (or LM_LICENSE_FILE) environment variable that follows this syntax:

MLM_LICENSE_FILE=port@hostname1,port@hostname2, port@hostname3

Change this value so that the environment variable only points to the single license server you have setup now. The syntax will look like this:

MLM_LICENSE_FILE=port@license_server_hostname

Redundant Server to Single Server setup using a network.lic file

On your client machines, locate the network.lic file that MATLAB is using. If you are unsure where to find this file on your computer, reference this article:

Where are the license files for MATLAB located?

https://www.mathworks.com/matlabcentral/answers/99147

Once you find the network.lic file, open it in a text editor. The syntax for the file will contain 3 SERVER lines. Delete the contents of this file and input the following syntax for your single license server instead:

SERVER {license_server_hostname} {license_server_HostID} 27000

USE_SERVER

Related Solutions

MATLAB: Using two license servers

This answer may help you.

You can specify first and second license servers using MLM_LICENSE_FILE environment variable.

Add a new environent variable MLM_LICENSE_FILE in Windows, Linux or Mac and set the value as

Windows

port1@licenseserver1hostname;port2@licenseserver2hostname

Linux/Mac

port1@licenseserver1hostname:port2@licenseserver2hostname

Or, you can also specify the license files.

For example, first, rename license files as network1.lic (for accessing license server1) and network2.lic (for license server2).

And set environment variable MLM_LICENSE_FILE as follows.

Windows

c:\FULLPATH\TO\network1.lic;c:\FULLPATH\TO\network2.lic

Linux/Mac

/FULLPATH/TO/network1.lic:/FULLPATH/TO/network2.lic

Hope this works.

MATLAB: How to transfer a Concurrent or Network Named User MATLAB license to a new server

To transfer a network license to a new computer, you must be a license administrator on the license in question and have the host ID of the new server. To obtain the host ID see the following article:

What is a Host ID? How do I find my Host ID in order to activate my license?

Once you have obtained the host ID you can transfer the license to the new server.

To transfer the license:

Go to the MathWorks License Center: https://www.mathworks.com/licensecenter
Click on the license that you would like to transfer.
Click on the tab "Install and Activate".
Click on the Activation Label for the old machine.
Click “Deactivate”.
Once the previous activation is gone, click “Activate” and provide the new information.
Once activation is complete, you will be able to download the new license file and File Installation Key.

Please note that deactivating your MATLAB license on the MathWorks website will not disable your existing license server. Once your clients have been migrated to the new server, you are responsible for shutting down your old license server to maintain compliance with the MATLAB Software License Agreement.

Once you have the license file for the new server, see the following article for instructions on setting up the new license server:

How do I install the Network License Manager?

After you have set up the new license server, the client computers that run MATLAB will need to be adjusted to aim at the new license server for the license checkout. Please see the article below for this process.

How do I migrate my MATLAB clients to a new license server when the license server changes?

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Related Solutions

MATLAB: Using two license servers

MATLAB: How to transfer a Concurrent or Network Named User MATLAB license to a new server

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