From Grid5000

Contents 1 Identification sheet 2 Build 2.1 Installation 2.1.1 Start-it with CD 2.2 Post installation 2.2.1 Add packages 2.2.2 SSH 2.2.2.1 TCP bandwidth 2.2.2.2 g5k user 3 Environment 3.1 Create Image File 3.2 Recording environment

Identification sheet

Build

Installation

Start-it with CD

The environment is initially installed from a Fecora Core 6 (zod) DVD for x86_64 (64-bit, AMD64 and EM64T).

At this step, environnement is smallest as possible, but we have eliminates somes packages after.

• root account is created with grid5000 as password

Post installation

Add packages

Default Fedora install does not contain all the packages we need:

• Text editors

yum install vim less xemacs21 gawk jed joe nano

• Script interpreters

yum install ruby python perl

• Network tools

 install nc6 nmap 

• Misc

yum install acpi strace  rcs 

SSH

Minor changes are done in configuration file /etc/ssh/sshd_config:

PrintMotd no
PasswordAuthentication no
ChallengeResponseAuthentication yes
PermitEmptyPasswords no
IgnoreUserKnownHosts yes
X11Forwarding yes

TCP bandwidth

On a grid, network kernel settings must be tuned to maximize inter-site connections bandwidth. This is done by editing /etc/sysctl.conf, as it is described on the related tuning page.

g5k user

A default user is added to make non-root connections possible:

$ groupadd --gid 1000 g5k
$ useradd --gid g5k --home-dir /home/g5k --create-home --uid 1000 g5k
$ echo "grid5000" | passwd --stdin g5k

Environment

Create Image File

ssh root@node-75.bordeaux.grid5000.fr "tar --posix --numeric-owner --one-file-system -zcf - /" > fedora6.tgz

Recording environment

Recording environment can be done from a description file. So we create fedora6-x64-base-1.0.dsc:

name = fedora6-x64-base-1.0
description = https://www.grid5000.fr/index.php/fedora6-x64-base-1.0
author = pierre.lemoine@inria.fr
filebase = file:///grid5000/images/fedora6-x64-base-1.0.tgz
filesite = file:///grid5000/postinstalls/fedora6-x64-base-1.0-post.tgz
size = 1000
initrdpath = /boot/initrd-2.6.18-1.2798.fc6.img
kernelpath = /boot/vmlinuz-2.6.18-1.2798.fc6
fdisktype = 83
filesystem = ext2

With karecordenv, the new environment can be known by Kadeploy:

karecordenv -fe fedora6-x64-base-1.0.dsc