| | 30 | To facilitate in imaging nodes, all nodes in every resource are preconfigured to netboot via the Intel Pre-Boot eXecution Environment. The ORBIT DHCP service instructs all nodes to download and execute Syslinux's pxelinux binary. The binary, upon execution, downloads a boot script via the Trivial File Transfer Protocol. When nodes are queued for imaging, the ORBIT PXE service creates links to a bootscript that forces the node to download and boot a small memory based linux distribution that launches the imaging client, frisbeed. After imaging, the ORBIT PXE service removes this link and, upon reboot, the nodes PXE boot but download a default boot script instructs the node to continue booting off of the hard disk. |
