1. Assignment: Install a debian ssh server on a VirtualBox and access to it

config apt-cacher 192.168.10.1 port 3128

sed -i 's#http://#http://192.168.10.1:3142/#g' /etc/apt/sources.list

install emacs

sudo aptitude install emacs

install config openssh server and make it work

eval `ssh-agent`
exec ssh-agent bash (if ssh-add is not working)

add sam_sshkey.pub to .ssh/authorized_keys

add to /etc/ssh/sshd_config:

AllowUsers xxx

changed in the same file:

PasswordAuthentication no
PermitRootLogin no

If ssh doesn't work check the grp and own of .ssh/authorized_keys

install bash completion

aptitude install bash-completion

add the following to ~/.bashrc or ~/.bash_profile

if [ -f /etc/bash_completion ]; then . /etc/bash_completion fi

Document the work done

Well, that's kind of done but the editing interface of the wiki is not yet clear to me. Few shortcut:

create a code box:

{code 'Enter'

heading

'ctrl' AND '1' XOR '2' XOR '3'

bullet list

'shift' AND 'ctrl' AND 'b'

bold, underline, italic

'ctrl' AND 'b'
'ctrl' AND 'u'
'ctrl' AND 'i'

save

'ctrl' AND 's'

Problems encountered after installation of debian

On start and halt

PROBLEM:

exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken

SOLUTION:

rm /var/log/exim4/paniclog

need to start the network manually dhclient eth0

PROBLEM: when auto eth0 added to interfaces. Nfs interfaces gets stuck on boot.

SOLUTION: there was no 'auto lo' in /etc/network/interfaces. That added plus 'auto eth0' makes it work.

2. Assignement: Install a graphic interface on Debian installation

Install Debian with nothing else than the minimum (except for laptop)

Install XOrg

apt-get install xorg

Install Gnome

apt-get install gnome-core

to test the installation:

starx

change the resolution

CTRL + ALT + '+'  and CTRL + ALT + '-'

screen the available resolution and change it

xrandr -q
wrands -s resolution

Install a display manager

apt-get install gdm

to start it

gdm

Install proprietary graphic card drivers:

If the kernel isn't compiled you need to install the kernel headers.

Check the kernel version

uname -r

Install the kernel header and link it to the linux file

apt-get install linux-header-...
rm /usr/src/linux
ln -s /usr/src/linux-header-... /usr/src/linux

Install the compilers

apt-get install gcc g++

For the nvidia cards

Download the latest drivers from the nvidia website.

Stop gdm (might need a kill)

/etc/init.d/gdm stop

Install the driver

sh NVIDIA...

Don't download the kernel interface. Ask for a compilation of a new interface. Start xconfig ans restart gdm

nvidia-xconfig
/etc/init.d/gdm restart

To remove the logo in xorg.conf

Option "NoLogo" "1"

3. Assignment: Install Amanda & use it

Installation

create the directory structure for the folders to keep the backup

mkdir /mnt/backup
#mount $DISK /mnt/backup/
mkdir /mnt/backup/vtapes /mnt/backup/holding /mnt/backup/holding/sam
chown backup.disk -R /mnt/backup/*

create the config in /etc/amanda

mkdir /etc/amanda/sam-daily
touch /etc/amanda/sam-daily/amanda.conf
touch /etc/amanda/sam-daily/disklist
chown -R backup.backup /etc/amanda/sam-daily

/etc/amanda/sam-daily/amanda.conf

org "sam"
mailto "root"
dumpcycle 7
runspercycle 5
tapecycle 30
dumpuser "backup"
tpchanger "chg-disk:/mnt/backup/vtapes/sam" # a virtual tape changer
#tapedev "/dev/nst0a" # the tapechanger
#tapedev "file:/mnt/backup/vtapes/offering"
changerfile "/var/lib/amanda/sam/changerfile"
labelstr "SAM.*"
label_new_tapes "SAM-%%"
tapetype DVD_SIZED_DISK
logdir "/var/lib/amanda/sam"
infofile "/var/lib/amanda/sam/curinfo"
indexdir "/var/lib/amanda/sam/index"
tapelist "/var/lib/amanda/sam/tapelist"
runtapes 5
#usetimestamps YES
dtimeout 3600 #seconds per client per dump
holdingdisk hd1 {
 directory "/mnt/backup/holding/sam"
}
define dumptype comp-tar {
 program "GNUTAR"
 index yes
# record no # Important! avoid interfering with production runs
 auth "bsdtcp"
 
}
define dumptype user-tar-span {
 comp-tar
 tape_splitsize 445 MB
 auth "bsd"
 #holdingdisk no
 #split_diskbuffer "/mnt/holding/diskbuffer"
 #fallback_splitsize 100M
 comment "tape-spanning user partitions dumped with tar"
 #exclude list "/etc/amanda/sam-daily/exclude-list"
}
define dumptype user-tar-span-home {
 user-tar-span
 comment "exluding all the unwanted things from /home"
# exclude list "/etc/amanda/sam-daily/exclude-list"
}
define tapetype DVD_SIZED_DISK {
 filemark 4 KB
 length 4482 MB
}

echo debian-server-test-sam.bluelight.av backup amdump >> /var/backups/.amandahosts

/etc/amanda/sam-daily/disklist

debian-server-test-sam.bluelight.av /etc user-tar-span
debian-server-test-sam.bluelight.av /var user-tar-span
debian-server-test-sam.bluelight.av /root user-tar-span
#debian-server-test-sam.bluelight.av /home/./all /home/ {
#user-tar-span
#exclude append "./media_no_backup"
#}

as the backup user create all the virtual tapes and label them

su backup -c "mkdir /mnt/backup/vtapes/sam"
for i in `seq 30`; do su backup -c "mkdir /mnt/backup/vtapes/sam/slot$i"; done
cd /mnt/backup/vtapes/sam && ln -s slot1 data

create the tapelist

su backup -c "mkdir /var/lib/amanda/sam"
su backup -c "touch /var/lib/amanda/sam/tapelist"

label the tapes

for i in `seq 30`; do su backup -c "/usr/sbin/amlabel sam-daily SAM-$i slot $i"; done

/root/scripts/amanda-backup (after creating the folder)

#!/bin/bash
#mount ${DISK} /mnt/backup
su backup -c "/usr/sbin/amdump sam-daily"
#sleep 5
#umount /mnt/backup
exit 0

chmod +x /root/scripts/amanda-backup

Recover

Create the directory where the recovery should be dumped in: /mnt/recovery

In order to be able to run a recovery add the following line to /etc/amandahosts

localhost root amindexd amidxtaped

Go to the /mnt/recovery folder

amrecover sam-daily
listhost
sethost  debian-server-test-sam.bluelight.av
listdisk
setdisk /etc
cd (folder name - ls works too)
add (name of the folder to recover or * for everything)    
extract
exit

Problems encountered

...amanda.conf ...Line 54: end of line expected

SOLUTION: Press 'ENTER' at the end of the file and save.