Upgrading Your License Servers in a Failover Cluster

From a License Administration Tool tool on a fourth machine outside the cluster (to find out how to install just the License Administration Tool without the license server, see Installing Only the License Administration Tool on Windows) :
1. Connect to the three failover members, and check that the failover cluster is green.
2. Stop one of the failover members using the Servers - Stop command.
3. Check that the failover cluster status goes from green to yellow (meaning the cluster is still running).
On the failover member that you stopped:
- On Windows:
  - Check that there is no local License Administration Tool running.
  - Uninstall the DS License Server.
  - Install the new DS License Server version.
- On Linux:
  - Check that there are no DSLicSrv processes running on the member using the command:
    ps -ef | grep DSLicSrv
    .
  - Delete the installation directory as follows:
    rm -rf /usr/DassaultSystemes/DSLicenseServer
  - Install the new DS License Server version as follows: startInstLicServ -noUI
Return to the fourth machine:
1. Reconnect to the upgraded failover member, and check that the member is running a different license server version from the two other members.
2. Stop the server on the second member. The failover cluster status is now red.
On the second member, repeat the same steps performed on the first member.
Return to the fourth machine:
1. Reconnect to the second upgraded failover member, then check the license server version and that the failover cluster status is now yellow.
2. Stop the server on the third member.
On the third member, repeat the same steps performed on the other two members.
Return to the fourth machine:
1. Reconnect to the third upgraded failover member.
2. Check the license server version and that the failover cluster status is now green.