Adding a dynamic host in a shared file system environment

In a shared file system environment, you do not need to install LSF on each dynamic host. The management host will recognize a dynamic host as an LSF host when you start the daemons on the dynamic host.

1. In the lsf.conf configuration file on the management host, define the LSF_DYNAMIC_HOST_WAIT_TIME parameter, in seconds, and assign a value greater than zero.

   LSF_DYNAMIC_HOST_WAIT_TIME specifies how long a dynamic host waits before sending a request to the management host LIM to add the host to the cluster.

   For example:

   LSF_DYNAMIC_HOST_WAIT_TIME=60

2. Define the LSF_DYNAMIC_HOST_TIMEOUT parameter.
   LSF_DYNAMIC_HOST_TIMEOUT specifies how long LSF waits before the management host automatically removes unavailable dynamic host. Each time LSF removes a dynamic host, mbatchd daemon automatically reconfigures itself.

   Note: For very large clusters, defining this parameter could decrease system performance

   For example:

   LSF_DYNAMIC_HOST_TIMEOUT=60m

3. In the lsf.cluster.cluster_name configuration file on the management host, define the LSF_HOST_ADDR_RANGE parameter.
   LSF_HOST_ADDR_RANGE enables security by defining a list of hosts that can join the cluster. Specify IP addresses or address ranges for hosts that you want to allow in the cluster.

   Note: If you define the LSF_ENABLE_SUPPORT_IPV6 parameter in the lsf.conf file, IP addresses can have either a dotted quad notation (IPv4) or IP Next Generation (IPv6) format; you do not have to map IPv4 addresses to an IPv6 format.

   For example:

   LSF_HOST_ADDR_RANGE=100-110.34.1-10.4-56

   All hosts belonging to a domain with an address having the first number between 100 and 110, then 34, then a number between one and ten, and then a number between four and 56, will be allowed access. In this example, no IPv6 hosts are allowed.

4. Log on as root to each host you want to join the cluster.
5. Source the LSF environment:
   • For csh or tcsh:

     source LSF_TOP/conf/cshrc.lsf

   • For sh, ksh, or bash:

     . LSF_TOP/conf/profile.lsf

6. Consider if you want LSF to start automatically when the host reboots.

   • If do not want automatic restarting, go to the next step.

   • If you want automatic restarting, run the hostsetup command. For example:

     cd /usr/share/lsf/10.1.0/install
     ./hostsetup --top="/usr/share/lsf" --boot="y"

   For complete hostsetup usage, enter hostsetup -h.

7. Use the following commands to start LSF:

   bctrld start lim
   bctrld start res
   bctrld start sbd