Version 15 (modified by 17 years ago) ( diff ) | ,
---|
Installing Debian
Ideally - you should boot using a Debian installer that uses the serial console. If you can't - just install the normal way.
Prepare your laptop - Screen
- Install screen on your debian laptop:
sudo apt-get install screen
- Connect your serial cable (or USB - serial cable) from your laptop to the server. You may want to check dmesg after plugging in the cable to see which device is being used. You should have a line along the lines of: usb 3-1: PL-2303 converter now attached to ttyUSB0
- Start screen with:
mkdir screen-log cd screen-log screen -L /dev/ttyUSB0 115200
Install Linux
Initial steps
- Put in Daniel's Serial Console debian installer and boot (note - if you don't have a serial installer, use a normal installer and a keyboard and monitor attached to the server)
- [Skipping easy steps]
- Manually partition the drive
- Remove any existing partitions.
- Add one partition (on each disk if there are two disks) that is:
250 MB Physical volume for RAID array (or ext3 if one disk system)
- Add a second parition (on each disk if there are two disks) that is:
Takes up remaining space Physical volume for RAID array (or Physical volume for LVM if one disk system)
- Choose "Congifure software RAID" (skip step if one disk system)
- Choose "Create MD Device"
- Choose RAID1
- Number of active devices: 2
- Number of spare devices: 0
- Now select the first partition on each device.
- Click Continue. Repeat for second partition on each device.
- When you are done, click Finish. Now you are back at the partition menu.
- Scroll down to the raid devices (or apply straight to your partitions if it's a one disk system). Modify as follows:
250 MB RAID device: Filesystem: ext3, mount on /boot Remaining: Physical Volume for LVM
- Choose "Congifure LVM"
- Create a volume group called vg_nameofserver0
- Create logical volumes in this volume group based on your needs. A dom0 will only need a 1GB root partition. A "normal" server might need a 1 GB root, 3GB /usr, 5 GB /var and 512 MB swap.
- After returning to the main disk config menu, click on each logical volume that you create and specify how it should be formatted and mounted.
- Enter root password in resource db or give to Jamie!
- Create a second user for yourself.
- Do not install the server package or the base package - deselect all of them.
Post Install
Syn Cookies
- Enable syncookies:
echo 1 > /proc/sys/net/ipv4/tcp_syncookies
- Preserve syncookies on reboot:
echo 'net.ipv4.tcp_syncookies=1' >> /etc/sysctl.conf
Misc
- Login as root and install the following packages:
# aptitude install ssh ntpdate ntp-server less emacs21-nox cron-apt iproute
- Upload the mayfirst public keys to:
/root/.ssh/authorized_keys
- Configure ssh to only accept connections with auth keys (unless this is a server that should be accessible by members). Edit /etc/ssh/sshd_config and uncomment/change this line:
PasswordAuthentication no
- Reload ssh:
# /etc/init.d/ssh reload
Fix Bash
- Overwrite /root/.bashrc with:
# ~/.bashrc: executed by bash(1) for non-login shells. export PS1='$? \h:\w\$ ' umask 022 # You may uncomment the following lines if you want `ls' to be colorized: # export LS_OPTIONS='--color=auto' # eval "`dircolors`" # alias ls='ls $LS_OPTIONS' # alias ll='ls $LS_OPTIONS -l' # alias l='ls $LS_OPTIONS -lA' # # Some more alias to avoid making mistakes: alias rm='rm -i' alias cp='cp -i' alias mv='mv -i
- Modify the following lines in /etc/skel/.bashrc
PS1='$? ${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ ' ;; *) PS1='$? ${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
- Add a .ssh directory and empty authorized_keys file in /etc/skel:
mkdir /etc/skel/.ssh touch /etc/skel/.ssh/authorized_keys
Serial console login
If you did not use the serial console installer, then perform the following:
- Edit the /etc/inittab file. Uncomment and modify:
T0:23:respawn:/sbin/getty -L ttyS0 115200 vt100
- Refresh:
$ sudo init q
- Add the following lines after the timeout line in /boot/grub/menu.1st
serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1 terminal --timeout=10 serial console
- Add the following lies to the Start Default Options. You should already have a line such as:
# kopt=root=/dev/md0 ro
add to it, so that your final line says:
# kopt=root=/dev/md0 ro console=ttyS0,115200n8
Refresh grub:
$ sudo update-grub
Note:
See TracWiki
for help on using the wiki.