LSF Version 7.3 - Administering Platform LSF

Multiple FLEXlm License Server Hosts
170 Administering Platform LSF
3 See Start the license daemons on page 166. Start lmgrd on all license server
hosts, not just one.
4 To allow the new permanent licenses to take effect, reconfigure the cluster with
the commands:
lsadmin reconfig
badmin mbdrestart
Redundant license server hosts
Configuring multiple license server hosts is optional. It provides a way to keep LSF
running if a license server host goes down. There are two ways to configure multiple
license servers. This section describes redundant license server hosts. See
Distributed license server hosts on page 169 for information on the second
configuration.
A permanent license key is tied to a particular license server host with a specific
host ID. If that host is down, the license service is not available and LSF becomes
unlicensed if the master LIM is shut down or restarted.
To prevent down time, you can configure three hosts as license server hosts. The
license server daemon (
lmgrd) and LSF vendor license daemon (lsf_ld) run on
each license server host. With three redundant server hosts, if any one host is down,
the other two continue to serve licenses. If any two hosts are down, the license
service stops.
Enable multiple
license server hosts
See the procedures for installing and configuring a permanent license. There are a
few differences when you use redundant license server hosts:
1 See Getting a permanent license on page 159. You must obtain a license file that
contains three
SERVER lines. You must provide the following information for
each license server host:
❖ Host name and FLEXlm host ID
2 See LSF_LICENSE_FILE parameter on page 160. Specify the location of all the
licenses in LSF_LICENSE_FILE, not just one. Use a pipe (|) on UNIX and
Linux or a colon (
:) on Windows to separate each location. List the primary
license server host first (the one you want LSF to contact first).
3 See Start the license daemons on page 166. Start
lmgrd on all license server
hosts, not just one.
4 To allow the new permanent licenses to take effect, reconfigure the cluster with
the commands:
lsadmin reconfig
badmin mbdrestart