ComputeMode on top of Debian Etch

This page describs the steps to install a ComputeMode server from scratch on a freshly newly installed Debian Etch system.

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Install the base Debian Etch system

• in tasksel, select web server + dns server + standard system
• install OpenSSH server

apt-get install openssh-server

We now have a up and remotely accessible wonderful running Debian system !

Update the package sources

• We set sources for the stable but also testing Debian flavor, as well as the Computemode and OAR repository

cat <<EOF > /etc/apt/sources.list
deb http://ftp.fr.debian.org/debian/ etch main non-free contrib
deb-src http://ftp.fr.debian.org/debian/ etch main non-free contrib

deb http://security.debian.org/ etch/updates main contrib
deb-src http://security.debian.org/ etch/updates main contrib

deb http://ftp.fr.debian.org/debian/ lenny main non-free contrib
deb-src http://ftp.fr.debian.org/debian/ lenny main non-free contrib

deb http://computemode.imag.fr/files/debian/etch ./
deb http://oar.imag.fr/debian/stable/2.2/ ./
EOF

• We now configure the pinning, so that the Debian testing packages are not installed by default

cat <<EOF > /etc/apt/preferences
Package: *
Pin: release o=Debian,a=testing
Pin-Priority: 100

Package: *
Pin: release o=Debian,a=stable
Pin-Priority: 900
EOF

• Some options can be tweaked:

cat <<EOF > /etc/apt/apt.conf.d/000custom
APT::Default-Release "stable";
APT::Cache-Limit 40000000;
Apt::Get::Purge;
Acquire::PDiffs "false";
EOF

• Finally:

apt-get update

Installation of ComputeMode web interface

We install ComputeMode packages, with the dependancies (Apache2, PHP, aso)

apt-get install cmwebadmin cmwebadmin-data cmwebadmin-manual cmwebadmin-nonfree cmwebadmin-portal

• accept deps, accept db reset, accept the sudoers modification
• get rid of the RedirectMatch ^/$ /apache2-default/ in apache default site
• you may remove /var/www/index.php to get the index.htm page

Installation of Computemode modified HPA's tftp server

Our patched version of HPA's tftpd provides a CGI like feature, for file with dynamic content retrieval

apt-get install xinetd
apt-get install cmtftpd-hpa
apt-get install -t lenny busybox-static
apt-get install cmtftpd-hpa-buildchroot
invoke.rc.d xinetd restart

Installation and configuration of the core services

• First install ISC DHCP and DNS server, as well as Linux NFS server

apt-get install bind9 dhcp3-server nfs-kernel-server

• Then retrieve Computemode ready to use configuration files

cd /tmp; wget http://computemode.imag.fr/files/cm-conf-files.tgz

• We can now put the configuration files in place

tar xvfz /tmp/cm-conf-files.tgz -C /

• Fix the configuration files with regard to the IP address which is actually assigned to your server

1. fix eth0:0 in /etc/network/interface
2. fix the DNS forwarders in /etc/bind/named.conf.options

• Then run at once (if accessing the machine remotely) the reconfiguration of the network interfaces

ifdown eth0 ;ifup eth0; ifup eth0:0

• And finally restart the services

invoke-rc.d bind9 restart
invoke-rc.d dhcp3-server restart
exportfs -rv

Installation of an account database

ComputeMode diskless node image ships with NIS configured, using the "computemode" domaine. If you do want to use NIS and run the NIS server on the ComputeMode server, run:

• check that the configuration is set to act as a NIS master in /etc/default/nis (file provided in the cm-conf-files.tgz we retrieved above)

NISSERVER=master

• then

apt-get install nis

• • set the domain name to "computemode"
• run the NIS domain initialization

/usr/lib/yp/ypinit -m

• finally restart the NIS serivce

invoke-rc.d nis restart

your NIS server should now be up and running

• create your user accounts, etc...
• and generate the NIS maps

cd /var/yp
make

Other services

Other services can be configured:

• syslog-ng
• ntp
• ...

Installation of ComputeMode nodes image

• Retrieve the Debian Sarge node image

cd /tmp/; wget http://computemode.imag.fr/files/cm-debian-sarge.tgz

• And untar it

tar xvfz /tmp/cm-debian-sarge.tgz -C /

Installation of OAR

TBC