Category: Linux

LTSP

January 25, 2005


I. LTSP
-------

http://www.ltsp.org/

cd root
mkdir archive
cd archive

wget ftp://195.220.108.108/linux/fedora/core/development/i386/Fedora/RPMS/nasm-0.98.38-2.i386.rpm
rpm -i nasm-0.98.38-2.i386.rpm

cvs -d :pserver:anonymous@cvs.ltsp.org:/usr/local/cvsroot checkout -r LTSP-4_0_1 lbe

cd lbe
./build_all
mv opt/ltsp/ /opt/

II. TFTP-HPA
------------
cd /root/archive
wget http://www.kernel.org/pub/software/network/tftp/tftp-hpa-0.36.tar.gz
tar -xvzf tftp-hpa-0.36.tar.gz
cd tftp-hpa-0.36
./configure
make
make install


mkdir /opt/tftproot
cd /root/archive
wget http://www.reliablepenguin.com/clients/misc/tftpd.service
cp tftpd.service /etc/init.d/tftpd
chmod 755 /etc/init.d/tftpd

chkconfig --add tftpd
chkconfig --level 456 tftpd on

cd /root/archive/lbe/kernel
cp bzImage-2.4.22-ltsp-1 /opt/tftproot/

III. DHCPD
----------

http://www.isc.org/index.pl?/sw/dhcp/

cd /root/archive
wget ftp://ftp.isc.org/isc/dhcp/dhcp-3.0.1rc13.tar.gz

tar -xvzf dhcp-3.0.1rc13.tar.gz
cd dhcp-3.0.1rc13
./configure
make
make install

cd server
cp dhcpd.conf /etc

touch /var/state/dhcp/dhcpd.leases
wget http://www.reliablepenguin.com/clients/misc/dhcpd.service
cp dhcpd.service /etc/init.d/dhcpd
chmod 755 /etc/init.d/dhcpd
chkconfig --add dhcpd
chkconfig --level 456 dhcpd on

I. LTSP

-------

http://www.ltsp.org/

cd root

mkdir archive

cd archive

wget ftp://195.220.108.108/linux/fedora/core/development/i386/Fedora/RPMS/nasm-0.98.38-2.i386.rpm

rpm -i nasm-0.98.38-2.i386.rpm

cvs -d :pserver:anonymous@cvs.ltsp.org:/usr/local/cvsroot checkout -r LTSP-4_0_1 lbe

cd lbe

./build_all

mv opt/ltsp/ /opt/

II. TFTP-HPA

------------

cd /root/archive

wget http://www.kernel.org/pub/software/network/tftp/tftp-hpa-0.36.tar.gz

tar -xvzf tftp-hpa-0.36.tar.gz

cd tftp-hpa-0.36

./configure

make

make install

mkdir /opt/tftproot

cd /root/archive

wget http://www.reliablepenguin.com/clients/misc/tftpd.service

cp tftpd.service /etc/init.d/tftpd

chmod 755 /etc/init.d/tftpd

chkconfig --add tftpd

chkconfig --level 456 tftpd on

cd /root/archive/lbe/kernel

cp bzImage-2.4.22-ltsp-1 /opt/tftproot/

III. DHCPD

----------

http://www.isc.org/index.pl?/sw/dhcp/

cd /root/archive

wget ftp://ftp.isc.org/isc/dhcp/dhcp-3.0.1rc13.tar.gz

tar -xvzf dhcp-3.0.1rc13.tar.gz

cd dhcp-3.0.1rc13

./configure

make

make install

cd server

cp dhcpd.conf /etc

touch /var/state/dhcp/dhcpd.leases

wget http://www.reliablepenguin.com/clients/misc/dhcpd.service

cp dhcpd.service /etc/init.d/dhcpd

chmod 755 /etc/init.d/dhcpd

chkconfig --add dhcpd

chkconfig --level 456 dhcpd on

Booting to Single User or Runlevel

January 25, 2005

On any Linux system running grub with a boot menu, you can specify the runlevel to the init program as follows: When the boot menu is displayed, press the up or down arrow key to stop the auto boot process. Using the arrow keys, select the kernel that you wish to boot. Press the “e” key to edit this boot config. Use the arrow keys to select the “kernel …. ” boot command. Press the “e” key to edit this boot command. Add a runlevel number or the word “single” to the end of the command line. Press the “b” key to boot the edited config.

Fixing ethernet interface speed

January 8, 2005

On redhat, the ETHTOOL_OPTS can provide some control over interface speed. Here’s the description from documentation:

 
ETHTOOL_OPTS=...
      Any device-specific options supported by ethtool. For example,
      if you wanted to force 100Mb full duplex:
        ETHTOOL_OPTS="speed 100 duplex full autoneg off"
      Note that changing speed or duplex settings almost always
      requires disabling autonegotiation with 'autoneg off'.

ETHTOOL_OPTS=...

Any device-specific options supported by ethtool. For example,

if you wanted to force 100Mb full duplex:

ETHTOOL_OPTS="speed 100 duplex full autoneg off"

Note that changing speed or duplex settings almost always

requires disabling autonegotiation with 'autoneg off'.

The ethtool utility provides extensive low level control over ethernet interfaces.

Redhat Network Config Resources

January 8, 2005

Here are some handy references about network config on redhat: /usr/share/doc/initscripts-<version>/sysconfig.txt — A guide to available options for network configuration files, including IPv6 options not covered in this chapter. /usr/share/doc/iproute-<version>/ip-cref.ps — This file contains a wealth of information about the ip command, which can be used to manipulate routing tables, among other things. Use the ggv or kghostview application to view this file. http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/ref-guide/ch-networkscripts.html

Defining Alias Interfaces

January 8, 2005

RedHat supports the configuration of alias interfaces via network scripts of the for “

ifcfg-eth0:0

1	ifcfg-eth0:0

” as described in the documentation here: http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/ref-guide/s1-networkscripts-interfaces.html Additionally there is undocumented support for alias ranges. Using a single network script of the form “

ifcfg-eth0-range0

1	ifcfg-eth0-range0

” a set of alias interfaces can be defined. This if very handly when setting up several aliases on a web server. Here’s a sample config file named “ifcfg-eth0-range0”:

DEVICE=eth0
BOOTPROTO=static
HWADDR=00:0C:F1:D7:BB:6F
ONBOOT=yes
TYPE=Ethernet
IPADDR_START=70.84.242.240
IPADDR_END=70.84.242.247
CLONENUM_START=240
NETMASK=255.255.255.255
NO_ALIASROUTING=yes