Installation guide

Release Notes
Generally speaking, be careful when making changes to /etc/beowulf/config, as mistakes may leave your cluster in
a non-working state. For example, in general do not manually change the existing keyword entries for interface, nodes,
iprange, and nodeassign, as those are more accurately manipulated by the /usr/sbin/beonetconf or /usr/sbin/beosetup
commands. The kernelimage and node entries are automatically managed by Beowulf services and should not be merged.
The remaining differences are candidates for careful merging. Pay special attention to merge additions to the bootmodule,
modarg, server, libraries, and prestage keyword entries. New nodename entries for infiniband or ipmi are offsets to each
node’s IP address on the private cluster network, and these offsets may need to be altered to be compatible with your local
network subnet. Also, be sure to merge differences in config.rpmnew comments, as those are important documentation
information for future reference.
Contact Scyld Customer Support if you are unsure about how to resolve particular differences, especially with
/etc/beowulf/config.
Disable SELinux
Scyld ClusterWare execution currently requires that SELinux be disabled. Edit /etc/sysconfig/selinux and ensure
that SELINUX=disabled is set. If SELinux was not already set to disabled, then the master node must be rebooted for this
change to take effect.
Optionally enable TORQUE
If you wish to run TORQUE, enable it on the master node:
/sbin/chkconfig torque on
After you successfully start the cluster compute nodes for the first time, enable the /etc/beowulf/init.d/torque script:
/sbin/beochkconfig 90torque on
then restart TORQUE and restart the compute nodes:
/sbin/service torque restart
/usr/sbin/bpctl -S all -R
See the Administrator’s Guide for more details about TORQUE configuration, and the User’s Guide for details about how
to use TORQUE.
Optionally enable Scyld Integrated Management Framework (IMF)
Scyld IMF is used by a cluster administrator to monitor and administer the cluster using a Web browser. It requires Apache
on the master node (service httpd) and is access-protected with a Web application-specific username, admin, and password
combination.
To enable the Scyld IMF interface, perform the following steps on the master node:
1. Enable the httpd service, if it is not already enabled:
/sbin/chkconfig httpd on
/sbin/service httpd start
2. Initialize the admin account by assigning it a unique password:
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