This chapter explains the use of the License Finder and includes the following topics:
The license finder provides license file path information to FLEXlm clients so that you do not have to configure LM_LICENSE_FILE environment variables for all your users. The license finder provides a single license file path to all clients.
 | Note: The license finder is available in FLEXlm v4.0 and later. |
| Note: Only applications linked with FLEXlm v4.0 (or later) will be able to use the license finder. |
A FLEXlm application determines the name of the license file using the following algorithm:
Looks for LM_LICENSE_FILE; if set, uses this path.
Looks for the “license finder” if step (1) fails.
Uses port “FLEXLM” from the services map; if not present it uses port 744 (the “official” FLEXlm port)
attempts to connect to this port on flexlm_license_finder, flexlm_license_finder2, flexlm_license_finder3 in order. Connect timeout is fixed at 2 seconds. This is done with TCP/IP. No broadcasts are involved. (For debugging, the connect timeout can be modified by setting FLEXLM_FINDER_TIMEOUT to an integer). If the lookup of flexlm_license_finder fails, this step terminates.
If it can connect to any license finder, it gets the license file path from the finder.
Uses the default license file path if (1) and (2) fail.
To start the license finder, execute the following command on the node flexlm_license_finder:
lmgrd -f finder_file |
| where: | is the: | |
| finder_file | license finder file |
lmgrd, when it is operating as a license finder (-f finder_file option), will ONLY process license finder request messages, and sends the license file path back to the client. This lmgrd will NOT start any vendor daemons or process any other client request. This functionality is delivered in lmgrd so that you do not need a separate executable.