| Scyld ClusterWare HPC: Administrator's Guide | ||
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Scyld ClusterWare adds some special files and directories on top of the standard Linux install that help control the behavior of the cluster. This appendix contains a summary of those files and directories, and what is in them.
All the config files for controlling how BProc and Beoboot behave are stored here.
This file contains the settings that control the BPmaster daemon for BProc, and the Beoserv daemon that is part of beoboot. It also contains part of the configuration for how to make beoboot boot images.
This directory is used by beofdisk to store files detailing the partitioning of the compute nodes' hard drives, and is also read from when it rewrites the partition tables on the compute nodes. See the Chapter called Disk Partitioning for more information on disk partitioning.
Refer to the Chapter called Disk Partitioning for details on using multiple fstabs.
This directory contains files that are used by beoboot for booting compute nodes.
This directory contains the node_up script and several smaller scripts that it calls.
This directory contains compute node boot files and static information, as well as the list of unknown MAC addresses. It includes three subdirectories.
This is the default location for files essential to booting compute nodes. Once a system is up and running, you will typically find three files in this directory:
computenode — the boot sector used for bootstrapping the kernel on the compute node.
computenode.initrd — the kernel image and initial ramdisk used to boot the compute node.
computenode.rootfs — the root file system for the compute node.
This directory contains a cached copy of static information from the compute nodes. At a minimum, it includes a copy of /proc/cpuinfo.
This file contains a list of Ethernet hardware (MAC) addresses for nodes considered unknown by the cluster. See the Section called Compute Node Categories in the Chapter called Scyld ClusterWare Design Description for more information.
This directory contains the boot logs from compute nodes. These logs are the output of what happens when the node_up script runs. The files are named node.<number> where <number> is the actual node number.
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