Black&White Project/Compilation Farm/Setup

Organization

The Compilation Farm is installed on the download.kiwix.org server. It is organized as:

• A buildbot master running as user buildbot on the server.
• A set of VirtualBox VMs running buildbot slaves.
  • ubuntu32 (192.168.5.50): i686 deb, i686 static
  • ubuntu64 (192.168.5.51): x86_64 deb, x86_64 static
  • macosx (192.168.5.52): universal (i386+x86_64) dmg with app.
  • win32 (192.168.5.53): i386 windows static
  • win64 (192.168.5.54): x64 windows static
  • fedora (192.168.5.55): i686 sugar static (kiwixdev)
  • arm (192.168.5.56): armel kiwix-serve static

Usage

A utility script, kbox is present to facilitate start and stop of the VMs.

(buildbot)buildbot@www:~/buildbot$ kbox --help
Usage: kbox [options]

Handy wrapper around virtualbox for kiwix

Options:
  -h, --help   show this help message and exit
  --listlocal  list names of VMs. Edit script to change.
  --listall    list all VMs with their status.
  --usb        list all USB devices on the host.
  --startall   start all VMs.
  --stopall    sends shutdown to all VMs.
  --start=VM   starts the VM named [VM].
  --stop=VM    sends shutdown to the VM named [VM].
  --info=VM    displays info for the VM named [VM].
  --ssh=VM     connects via SSH to the VM named [VM].

• Example connection to ubuntu32 VM:

kbox --ssh ubuntu32

Master Setup

• Install required packages

# apt-get install build-essential subversion zip unzip python-pip vim python-dev
pip install virtualenv virtualenvwrapper

• Create user buildbot
• Log-in as user buildbot
• Edit .bashrc and add at the end

export EDITOR="vim -v"

export WORKON_HOME=~/envs
source /usr/local/bin/virtualenvwrapper.sh

• Log-out then log-in to enable virtualenvwrapper
• Create virtualenv

mkvirtualenv --no-site-packages buildbot
mkdir -p buildbot && cd buildbot

• Install builbot and create master

easy_install buildbot
buildbot create-master master

• Deploy configuration

svn co https://kiwix.svn.sourceforge.net/svnroot/kiwix/buildbot/ code
cd master && ln -sf ../code/master.cfg master.cfg && cd -
cp code/secret_pass.py master/secret_pass.py

• Edit the password file in master/secret_pass.py
• Start the master

buildbot start master

• Create an nginx proxy at /etc/nginx/sites-available/buildbot.kiwix.org

server {
  listen localhost:81;
  listen 88.190.13.50:80;
  server_name buildbot.kiwix.org;

  access_log off;

  proxy_buffering off;
  proxy_max_temp_file_size 0;

  set_real_ip_from 127.0.0.1;
  set_real_ip_from 88.190.13.50;
  real_ip_header X-Forwarded-For;

  location / {
    proxy_set_header X-Real-IP  $remote_addr;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_pass http://localhost:8010;
    proxy_set_header Host $host;
  }
}

Automatic Startup

• crontab -e on builbot user

@reboot /home/buildbot/envs/buildbot/bin/buildbot start /home/buildbot/buildbot/master

Slave Setup

buildbot slave does not require much: a working python/setuptools environnment.

Linux Slave Setup

• Create a VirtualBox VM (20GB of storage - dynamic)
• Install Ubuntu 10.04.4 (Newer versions of Ubuntu uses a recent glibc)
• Select OpenSSH server during install.
• Create a regular user (dev)
• Use whole disk partitioning
• Install packages:

# apt-get install --fix-missing acpi acpid build-essential autoconf automake libtool pkg-config fastjar libssl-dev libexpat1-dev libxml2-dev libgnutls-dev libgpg-error-dev libgcrypt-dev uuid-dev libuuid1 subversion zip unzip python-pip vim python-dev

• Install python tools

# pip install virtualenv virtualenvwrapper

From now, you won't need root privileges anymore.

• Log in as dev user
• Edit ~.bashrc and add at the end

export EDITOR="vim -v"

export WORKON_HOME=~/envs
source /usr/local/bin/virtualenvwrapper.sh

• Log out then log-in again (to activate virtualenvwrapper)
• Create virtualenv

mkvirtualenv --no-site-packages buildbot

• Install buildbot

easy_install buildbot-slave

• Create the slave

mkdir -p buildbot && cd buildbot
buildslave create-slave slave 192.168.5.1:9989 ubuntu32 BUILDER_PASS

• Edit files in slave/info/ and put host description and maintainer
• Start the slave

cd slave/
buildslave start

Automatic Startup

• crontab -e on dev user

@reboot /home/dev/envs/buildbot/bin/buildslave start /home/dev/buildbot/slave

VirtualBox Setup

• Install the non-free version of Virtual Box:

wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
echo "deb http://download.virtualbox.org/virtualbox/debian lucid contrib non-free" >> /etc/apt/sources.list
apt-get update
apt-get install virtualbox-4.1
apt-get install linux-headers
/etc/init.d/vboxdrv setup
wget -c http://download.virtualbox.org/virtualbox/4.1.14/Oracle_VM_VirtualBox_Extension_Pack-4.1.14-77440.vbox-extpack
VBoxManage extpack install /home/buildbot/vms/Oracle_VM_VirtualBox_Extension_Pack-4.1.14-77440.vbox-extpack

• VMs will be stored in /home/buildbot/vms

• Configure Network

VBoxManage hostonlyif create
VBoxManage hostonlyif ipconfig vboxnet0 --ip 192.168.5.1 --netmask 255.255.255.0
VBoxManage dhcpserver add --ifname vboxnet0 --ip 192.168.5.1 --netmask 255.255.255.0 --lowerip 192.168.5.10 --upperip 192.168.5.50 --enable

• Create a HDD Image

VBoxManage createhd --filename ~/vms/ubuntu32/ubuntu32.vdi --size 20480 --variant Standard

• Create VM (VBoxManage list ostypes for types list)

VBoxManage createvm --register --name ubuntu32 --ostype Ubuntu --basefolder ~/vms/
VBoxManage modifyvm ubuntu32 --memory 512 --audio none --clipboard disabled --usb off --usbehci off --nic1 nat --nictype1 82543GC --nic2 hostonly --nictype2 82543GC --hostonlyadapter2 vboxnet0 --vrde on --boot1 dvd --boot2 disk
VBoxManage storagectl ubuntu32 --name hdd --add sata --controller IntelAhci --bootable on
VBoxManage storagectl ubuntu32 --name cd --add ide --controller PIIX4 --bootable on
VBoxManage storageattach ubuntu32 --storagectl hdd --type hdd --port 1 --medium ~/vms/ubuntu32/ubuntu32.vdi
VBoxManage storageattach ubuntu32 --storagectl cd --type dvddrive --port 1 --device 1 --medium ~/vms/ubuntu-10.04.4-server-i386.iso

• Start VM & Install System using rdesktop

VBoxManage startvm ubuntu32 --type headless

On your computer, connect with:

rdesktop download.kiwix.org:3389

• Configure Network (eth1) with a static IP according to mapping above in /etc/network/interfaces

iface eth1 inet static
    address    192.168.5.50
    netmask    255.255.255.0
    gateway    192.168.5.1
auto eth1

• Once installed, tweak the VM

VBoxManage storageattach ubuntu32 --storagectl cd --type dvddrive --port 1 --device 1 --medium none
VBoxManage modifyvm ubuntu32  --vrde off

From now, connection to the VM will be SSH only.

Post B&W todo

• Start VM automaticaly/transparently if a compilation is required - otherwise VM is offline.
• Start chained compilations : only the first one is planned, and all other ones occur one by one afterwards.