FlexNet Three-Server Redundancy - Triad License Server

On this page

Using the three-server redundancy capability in FlexNet Publisher, all three license servers operate to form a triad. The license servers send periodic messages to each other to make sure that at least two servers are running and communicating. A quorum is formed when at least two of the three license servers are running and communicating with each other. For more information, see the FlexNet Administration Guide on the FlexNet license server installation and licensing page.

Prerequisites

In order to run a license server in a Three-Server Redundancy mode (Triad License Server), you must first obtain a license key suited for it.

The license key must contain 3 SERVER lines with hostnames and MAC addresses defined.

Starting on a fresh installation of lmadmin

1. Have the cameo daemon in <lmadmin.install.dir>\licenses\cameo
2. The first server from the license key should be started first, by importing the license key from the lmadmin Administration tab.
3. After the import, the cameo daemon will state that it is "Down", and the lmadmin.log file will be displayed. This will happen until the second server is started.

root.LicenseEngine started with redundant configuration -
xxxxx@xxxxxxx, xxxxx@xxxxxxx, xxxxx@xxxxxxx.
root.Quorum is starting up.
root.Quorum is waiting

Licenses will only be served when there are at least 2 license servers running.

Starting on a lmadmin that was running a single license server

If lmadmin was previously started with a different, single server license, there is additional action needed. By starting a single license server, it goes into a single license server mode, and thus won't accept Three-Server redundancy (Triad) license keys.

There are two options:

• Do a clean installation of lmadmin.
• Reconfigure the current lmadmin and change the license mode.

Clean installation

To do a clean installation of lmadmin, first, you need to remove the previous installation. Then you can proceed with the fresh installation (see Starting on a fresh installation of lmadmin).

Reconfigure the current lmadmin

Reconfigure the current lmadmin and change the license mode:

Steps to change server mode:

1. In the Vendor Daemon Configuration tab, Stop and Remove the existing cameo vendor daemon.
2. In the Server Configuration tab, click Stop Server to shut down lmadmin. Wait for 1 minute for the server to stop.
3. Go to the lmadmin installation directory (e.g. C:\Program Files\FlexNet Publisher 64-bit License Server Manager11_17)
4. Open the command prompt in that directory (with Administrator user rights)

5. Type lmadmin -import <new_license_file> -force -configDir <config_dir>

   This is an example (change the paths according to your machine):

   lmadmin -import "C:\Program Files\FlexNet Publisher 64-bit License Server Manager11_17\licenses\cameo\triadKey.txt" -force -configDir "C:\ProgramData\FLEXlm\lmadmin11_17\conf"

   After executing the command, in the cmd line you should see:

Configured new vendor daemon, cameo.

1. Start lmadmin (using service). You do not need to do anything else after that. It will show Stopped until a quorum is reached (then it will start). Licenses will be served only when there are at least 2 servers running lmadmin (from the 3 defined).
2. The log file lmadmin.log, will show:

root.LicenseEngine started with redundant configuration -xxxxx@xxxxxxx, xxxxx@xxxxxxx, xxxxx@xxxxxxx.
root.Quorum is starting up. 
root.Quorum is waiting.