Testbed Computer Setup

Testbed Computer Setup

This computer is the heart of all the testbed. From here you will run your tests, develop your scripts, compile kernels and save the test results. You will need to have regular user account and from there you will work. This lets few people work together on the testbed and each user will have its own testing scripts, kernels etc.

Install basic stable Debian system

You can just download and burn the image: mini.iso, and then change the boot sequence in the BIOS to boot the cdrom first. At the installation deselect the Desktop Environment (don’t install the Desktop environment).

To get ssh access to the computer you installed, just login and install the ssh server:

  aptitude install openssh-server

SSH to your server and install those packages:

 aptitude install \
    ltsp-utils ltsp-server apache2 gnuplot \
    less ketchup build-essential libncurses5-dev \
    vim-full cscope exuberant-ctags openntpd screen \
    dnsmasq tcpdump nmap subversion \
    wireless-tools syslog-ng gawk git

Misc Setup

Uncoment the lines in /root/.bashrc to add some aliases for working with colors and warning before deleting something:

 export LS_OPTIONS='--color=auto'
 eval "`dircolors`"
 alias ls='ls $LS_OPTIONS'
 alias rm='rm -i'
 alias cp='cp -i'
 alias mv='mv -i'

You need two ethernet cards, and edit /etc/network/interfaces:

	
testbed internal network

 allow-hotplug eth0

 iface eth0 inet static

         address 192.168.1.1

         netmask 255.255.255.0


	
Outside access to the testbed

 allow-hotplug eth1

 iface eth1 inet dhcp

You will need to replace eth1 and eth0 in your setup, depend on the cards. If you have one card 100 and one 1000, put the 1000 inside the testbed, ie. eth0. The outside interface is just for control and can be 100.

NFS Server

Add the line to the file /etc/exports:

  /opt/ltsp       *(ro,no_root_squash,async)

Restart nfs service:

  /etc/init.d/nfs-kernel-server restart

To verify that /opt/ltsp is exported, run exportfs.

dnsmasq

Create entries in the /etc/hosts:

cat << EOF > /tmp/hosts

	
Testbed servers

192.168.1.254 testbed2

192.168.1.250 router

192.168.3.250 192.168.4.250 wrouter

192.168.1.251 src

192.168.3.251 wsrc

192.168.1.252 ap

192.168.2.252 192.168.4.252 wap

192.168.1.253 apc


	
Testbed clients

EOF

for i in `seq 1 249`; do for y in 1 2 ; do if [[ $y == 1 ]]; then W= ; else W=w ; fi; echo “192.168.$y.$i ${W}client$i” ;done ; echo ; done >> /tmp/hosts

cat /tmp/hosts >> /etc/hosts

Edit /etc/dnsmasq.conf to be similar to this:

dhcp-authoritative
interface=eth0

	
enable dhcp on the 192.168.1 network, but only for configured hosts

dhcp-range=192.168.1.0,static


	
rootpath option

dhcp-option=net:ltsp,17,/opt/ltsp/i386

dhcp-option=net:bsd,17,/opt/freebsd4/i386


	
define common netboot types 

dhcp-vendorclass=etherboot,Etherboot

dhcp-vendorclass=pxe,PXEClient


	
Set the boot filename for BOOTP. 

dhcp-boot=net:pxe,/ltsp/i386/pxelinux.0

dhcp-boot=net:etherboot,/ltsp/i386/nbi.img

dhcp-boot=net:bsd,/freebsd4/i386/pxeboot


	
servers configuration

dhcp-host=00:07:e9:19:eb:b2,router,192.168.1.250,infinite,net:bsd

#dhcp-host=00:00:00:00:00:00,wrouter,192.168.2.250,infinite,net:bsd

#dhcp-host=00:00:00:00:00:00,src,192.168.1.251,infinite,net:ltsp

#dhcp-host=00:00:00:00:00:00,wsrc,192.168.2.251,infinite,net:ltsp
#dhcp-host=00:00:00:00:00:00,ap,192.168.1.252,infinite,net:ltsp

#dhcp-host=00:00:00:00:00:00,wap,192.168.2.252,infinite,net:ltsp

	
client configuration

dhcp-host=00:00:24:C8:6E:54,client1,192.168.1.1,infinite,net:ltsp

#dhcp-host=00:00:00:00:00:00,wclient1,192.168.2.1,infinite,net:ltsp

dhcp-host=00:00:24:C8:03:E8,client2,192.168.1.2,infinite,net:ltsp

#dhcp-host=00:00:00:00:00:00,wclient2,192.168.2.2,infinite,net:ltsp

You can consult this example for improving this configuration file.

Then run this script to populate the rest of the network:

for i in `seq 1 249`; do for y in 1 2 ; do if [[ $y == 1 ]]; then W= ; else W=w ; fi; echo "#dhcp-host=00:00:00:00:00:00,${W}client$i,192.168.$y.$i,infinite,net:ltsp" ;done ; echo ; done >> /etc/dnsmasq.conf

LTSP setup

LTSP setup

tftp-hpa

Edit /etc/default/tftpd-hpa and change RUN_DAEMON="no" to RUN_DAEMON="yes"

start tftp server: /etc/init.d/tftpd-hpa start

Populate the links in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg:

cd /var/lib/tftpboot/ltsp/i386/pxelinux.cfg
ln -fs ap `gethostip -x  192.168.1.252`
ln -fs src `gethostip -x  192.168.1.251`
for i in `seq 1 249`; do ln -sf clients `gethostip -x 192.168.1.$i`; done

NOTE: The real files ap,src,clients will be created after you compile a kernel and install it with cpkrn2tftpdir

Logging

To understand what I’m doing you can look here http://www.ltsp.org/twiki/bin/view/Ltsp/Syslog

Append this code to the file /etc/syslog-ng/syslog-ng.conf

#  If you wish to get logs from remote machine you will need this server
# to listen upon port 514.
#
source remote { udp(); };

#
# Automatic host sorting
# Store all files beneath '/var/log/NAME OF MACHINE/facility
# Create these directories if required, with the given permissions.
#
destination hosts { file("/var/log/testbed2/$HOST/$FACILITY.log" owner(root)
  group(root) perm(0600) dir_perm(0700) create_dirs(yes)); };

#
# log by host (as defined above) anything that's coming from the
# remote socket.
#
log { source(remote); destination(hosts); };

Restart syslog-ng

/etc/init.d/syslog-ng restart