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A two-step procedure was used to generate remote bootstrap floppy disks for client machines. First, the kernel source residing on the server was recompiled to include “root file system on NFS (Network File System)” support. Once compilation was complete, the newly created kernel image was moved from /usr/src/linux/arch/i386/boot/zImage to /tftpboot/adm/client_boot_image_remote. A new disk was labeled and inserted in the server's floppy drive. A dummy device, /dev/boot22, was created with the mknod utility. The dd utility was used to copy client_boot_image_remote to the floppy disk. The rdev utility was then used to set the root device for the kernel residing on the floppy image to the dummy device /dev/boot22. The following sequence of commands was used to create the remote bootstrap floppy disk:
mknod /dev/boot255 c 0 255 dd if=/adm/client_boot_image_remote/zImage of=/dev/fd0 rdev /dev/fd0 /dev/boot255
Finally, this procedure was captured in a shell script and used to create additional remote bootstrap floppy disks.
All client systems included a hard disk configured to provide a single 50MB swap partition, /dev/sda1. This would allow experimental users to partition the remainder of the drive to suit their needs when installing Linux on their systems. Because the only CD-ROM resides on lin2, any installation of Linux to a client system other than lin2 has to be done via NFS. To make such an installation possible, modifications to the MCA Slackware 3.1 boot floppy were necessary. The boot floppy was mounted under the /mnt directory using the command
mount -t minix /dev/fd0 /mnt
The file /mnt/etc/networks was updated, changing LOCALNET to IP address 220.127.116.11. The MCA Slackware 3.1 boot floppy assumes that if a network installation is being conducted, the network is of type Ethernet. Therefore, it was necessary to edit the file /mnt/usr/lib/set/INSNFS, changing all occurrences of eth0 to tr0. As with the remote bootstrap floppy, a script was written to automate the above operations.
The declining cost of disk drives, together with concerns about system security, have made diskless workstation operation and remote protocols like RARP less attractive. “Relatively inexpensive”, however, is still not quite “free”. We described a strategy for implementing a Linux-based laboratory that, in effect, uses diskless operation to support regular as well as standard users, at no additional cost.
ETSU's Linux-based computer lab has not been fully integrated into the ETSU curriculum, due primarily to unforeseen delays including equipment outages caused by a thunderstorm. The lab, however, is operational. Two students used the lab in spring 1998 to develop a serial line driver for a senior-level operating systems course. Currently, plans are being made to use the laboratory as a tool for teaching graduate operating systems and undergraduate networking courses in the coming academic year.
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|CentOS 6.8 Released||May 27, 2016|
|Secure Desktops with Qubes: Introduction||May 27, 2016|
|Chris Birchall's Re-Engineering Legacy Software (Manning Publications)||May 26, 2016|
|ServersCheck's Thermal Imaging Camera Sensor||May 25, 2016|
|Petros Koutoupis' RapidDisk||May 24, 2016|
|The Italian Army Switches to LibreOffice||May 23, 2016|
- Secure Desktops with Qubes: Introduction
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- Chris Birchall's Re-Engineering Legacy Software (Manning Publications)
- The Italian Army Switches to LibreOffice
- Linux Mint 18
- CentOS 6.8 Released
- Petros Koutoupis' RapidDisk
- ServersCheck's Thermal Imaging Camera Sensor
- Oracle vs. Google: Round 2
- The FBI and the Mozilla Foundation Lock Horns over Known Security Hole
Until recently, IBM’s Power Platform was looked upon as being the system that hosted IBM’s flavor of UNIX and proprietary operating system called IBM i. These servers often are found in medium-size businesses running ERP, CRM and financials for on-premise customers. By enabling the Power platform to run the Linux OS, IBM now has positioned Power to be the platform of choice for those already running Linux that are facing scalability issues, especially customers looking at analytics, big data or cloud computing.
￼Running Linux on IBM’s Power hardware offers some obvious benefits, including improved processing speed and memory bandwidth, inherent security, and simpler deployment and management. But if you look beyond the impressive architecture, you’ll also find an open ecosystem that has given rise to a strong, innovative community, as well as an inventory of system and network management applications that really help leverage the benefits offered by running Linux on Power.Get the Guide