Administering Platform LSF - SAS

Host Groups
Host Groups
Where to use host groups
You can define a host group within LSF or use an external executable to
retrieve host group members.
Use bhosts to view a list of existing hosts. Use bmgroup to view host group
membership use.
LSF host groups can be used in defining the following parameters in LSF
configuration files:
◆ HOSTS in lsb.queues for authorized hosts for the queue
◆ HOSTS in lsb.hosts in the HostPartition section to list host groups
that are members of the host partition
Configuring host groups
1 Log in as the LSF administrator to any host in the cluster.
2 Open lsb.hosts.
3 Add the HostGroup section if it does not exist.
Begin HostGroup
GROUP_NAME GROUP_MEMBER
groupA
(all)
groupB
(groupA ~hostA ~hostB)
groupC
(hostX hostY hostZ)
groupD
(groupC ~hostX)
groupE
(all ~groupC ~hostB)
groupF
(hostF groupC hostK)
desk_tops
(hostD hostE hostF hostG)
Big_servers (!)
End HostGroup
4 Enter a group name under the GROUP_NAME column.
External host groups must be defined in the egroup executable.
5 Specify hosts in the GROUP_MEMBER column.
(Optional) To tell LSF that the group members should be retrieved using
egroup, put an exclamation mark (!) in the GROUP_MEMBER column.
6 Save your changes.
7 Run badmin ckconfig to check the group definition. If any errors are
reported, fix the problem and check the configuration again.
8 Do one of the following:
a Run badmin reconfig if you do not want the new group to be
recognized by jobs that were submitted before you reconfigured.
b Run badmin mbdrestart if you want the new host to be recognized
by jobs that were submitted before you reconfigured.
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Administering Platform LSF