Buildbot Setup for Virtual Machines - Ubuntu 13.10 "saucy"

Explains how to provision and configure virtual machine instances specifically for Buildbot testing.

Base Install

qemu-img create -f qcow2 /kvm/vms/vm-saucy-amd64-serial.qcow2 20G
qemu-img create -f qcow2 /kvm/vms/vm-saucy-i386-serial.qcow2 20G

Start each VM booting from the server install iso one at a time and perform the following install steps:

kvm -m 2048 -hda /kvm/vms/vm-saucy-amd64-serial.qcow2 -cdrom /kvm/iso/ubuntu/ubuntu-13.10-server-amd64.iso -boot d -smp 2 -cpu qemu64 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:2287-:22
kvm -m 2048 -hda /kvm/vms/vm-saucy-i386-serial.qcow2 -cdrom /kvm/iso/ubuntu/ubuntu-13.10-server-i386.iso -boot d -smp 2 -cpu qemu64 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:2288-:22

Once running you can connect to the VNC server from your local host with:

vncviewer -via ${remote_host} localhost

Replace ${remote-host} with the host the vm is running on.

Note: When you activate the install, vncviewer may disconnect with a complaint about the rect being too large. This is fine. Ubuntu has just resized the vnc screen. Simply reconnect.

Install, picking default options mostly, with the following notes:

• Set the hostname to ubuntu-saucy-amd64 or ubuntu-saucy-i386

• do not encrypt the home directory

• When partitioning disks, choose "Guided - use entire disk" (we do not want LVM)

• No automatic updates

• Choose software to install: OpenSSH server

Now that the VM is installed, it's time to configure it. If you have the memory you can do the following simultaneously:

kvm -m 2048 -hda /kvm/vms/vm-saucy-amd64-serial.qcow2 -cdrom /kvm/iso/ubuntu/ubuntu-13.10-server-amd64.iso -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:2287-:22 -nographic
kvm -m 2048 -hda /kvm/vms/vm-saucy-i386-serial.qcow2 -cdrom /kvm/iso/ubuntu/ubuntu-13.10-server-i386.iso -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:2288-:22 -nographic

ssh -p 2287 localhost
sudo update-alternatives --config editor
# edit /boot/grub/menu.lst and visudo, see below

ssh -p 2288 localhost
sudo update-alternatives --config editor
# edit /boot/grub/menu.lst and visudo, see below


ssh -t -p 2287 localhost "mkdir -v .ssh; sudo addgroup $USER sudo"
ssh -t -p 2288 localhost "mkdir -v .ssh; sudo addgroup $USER sudo"

scp -P 2287 /kvm/vms/authorized_keys localhost:.ssh/
scp -P 2288 /kvm/vms/authorized_keys localhost:.ssh/

echo $'Buildbot\n\n\n\n\ny' | ssh -p 2287 localhost 'chmod -vR go-rwx .ssh; sudo adduser --disabled-password buildbot; sudo addgroup buildbot sudo; sudo mkdir -v ~buildbot/.ssh; sudo cp -vi .ssh/authorized_keys ~buildbot/.ssh/; sudo chown -vR buildbot:buildbot ~buildbot/.ssh; sudo chmod -vR go-rwx ~buildbot/.ssh'
echo $'Buildbot\n\n\n\n\ny' | ssh -p 2288 localhost 'chmod -vR go-rwx .ssh; sudo adduser --disabled-password buildbot; sudo addgroup buildbot sudo; sudo mkdir -v ~buildbot/.ssh; sudo cp -vi .ssh/authorized_keys ~buildbot/.ssh/; sudo chown -vR buildbot:buildbot ~buildbot/.ssh; sudo chmod -vR go-rwx ~buildbot/.ssh'

scp -P 2287 /kvm/vms/ttyS0.conf buildbot@localhost:
scp -P 2288 /kvm/vms/ttyS0.conf buildbot@localhost:

ssh -p 2287 buildbot@localhost 'sudo apt-get update && sudo apt-get -y dist-upgrade;'
ssh -p 2288 buildbot@localhost 'sudo apt-get update && sudo apt-get -y dist-upgrade;'

ssh -p 2287 buildbot@localhost 'sudo cp -vi ttyS0.conf /etc/init/; rm -v ttyS0.conf; sudo shutdown -h now'
ssh -p 2288 buildbot@localhost 'sudo cp -vi ttyS0.conf /etc/init/; rm -v ttyS0.conf; sudo shutdown -h now'

Enabling passwordless sudo:

sudo VISUAL=vi visudo
# Add line at end: `%sudo ALL=NOPASSWD: ALL'

Editing /boot/grub/menu.lst:

sudo vi /etc/default/grub

# Add/edit these entries:
GRUB_HIDDEN_TIMEOUT_QUIET=false
GRUB_TIMEOUT=0
GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,115200n8"
GRUB_TERMINAL="serial"
GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1"

sudo update-grub
# exit back to the host server

VMs for building .debs

for i in '/kvm/vms/vm-saucy-amd64-serial.qcow2 2287 qemu64' '/kvm/vms/vm-saucy-i386-serial.qcow2 2288 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/build/')" \
    "= scp -P $2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/thrift-0.9.0.tar.gz buildbot@localhost:/dev/shm/" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get update" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get -y build-dep mysql-server-5.5" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get install -y devscripts hardening-wrapper fakeroot doxygen texlive-latex-base ghostscript libevent-dev libssl-dev zlib1g-dev libpam0g-dev libreadline-gplv2-dev autoconf automake automake1.9 dpatch ghostscript-x libfontenc1 libjpeg62 libltdl-dev libltdl7 libmail-sendmail-perl libxfont1 lmodern texlive-latex-base-doc ttf-dejavu ttf-dejavu-extra libaio-dev xfonts-encodings xfonts-utils libxml2-dev unixodbc-dev bzr scons check libboost-all-dev openssl epm" \
    "bzr co --lightweight lp:mariadb-native-client" \
    "cd /usr/local/src;sudo tar zxf /dev/shm/thrift-0.9.0.tar.gz;pwd;ls" \
    "cd /usr/local/src/thrift-0.9.0;echo;pwd;sudo ./configure --prefix=/usr --enable-shared=no --enable-static=yes CXXFLAGS=-fPIC CFLAGS=-fPIC && echo && echo 'now making' && echo && sleep 3 && sudo make && echo && echo 'now installing' && echo && sleep 3 && sudo make install" ; \
done

VMs for install testing.

See Buildbot Setup for Virtual Machines - General Principles for how to obtain my.seed and sources.append.

for i in '/kvm/vms/vm-saucy-amd64-serial.qcow2 2287 qemu64' '/kvm/vms/vm-saucy-i386-serial.qcow2 2288 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/install/')" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get update" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get install -y patch libaio1 debconf-utils unixodbc libxml2" \
    "= scp -P $2 /kvm/vms/my55.seed /kvm/vms/sources.append buildbot@localhost:/tmp/" \
    "sudo debconf-set-selections /tmp/my55.seed" \
    "sudo sh -c 'cat /tmp/sources.append >> /etc/apt/sources.list'"; \
done

VMs for MySQL upgrade testing

for i in '/kvm/vms/vm-saucy-amd64-serial.qcow2 2287 qemu64' '/kvm/vms/vm-saucy-i386-serial.qcow2 2288 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/upgrade/')" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get update" \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get install -y patch libaio1 debconf-utils" \
    "= scp -P $2 /kvm/vms/my55.seed /kvm/vms/sources.append buildbot@localhost:/tmp/" \
    "sudo debconf-set-selections /tmp/my55.seed" \
    "sudo sh -c 'cat /tmp/sources.append >> /etc/apt/sources.list'" \
    'sudo DEBIAN_FRONTEND=noninteractive apt-get install -y mysql-server-5.5' \
    'mysql -uroot -prootpass -e "create database mytest; use mytest; create table t(a int primary key); insert into t values (1); select * from t"' ;\
done

VMs for MariaDB upgrade testing

for i in '/kvm/vms/vm-saucy-amd64-serial.qcow2 2287 qemu64' '/kvm/vms/vm-saucy-i386-serial.qcow2 2288 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/upgrade2/')" \
    "= scp -P $2 /kvm/vms/my55.seed /kvm/vms/sources.append buildbot@localhost:/tmp/" \
    "= scp -P $2 /kvm/vms/mariadb-saucy.list buildbot@localhost:/tmp/tmp.list" \
    "sudo debconf-set-selections /tmp/my55.seed" \
    'sudo mv -vi /tmp/tmp.list /etc/apt/sources.list.d/' \
    'sudo apt-key adv --recv-keys --keyserver pgp.mit.edu 0xcbcb082a1bb943db' \
    "sudo DEBIAN_FRONTEND=noninteractive apt-get update" \
    'sudo DEBIAN_FRONTEND=noninteractive apt-get install -y mariadb-server' \
    'mysql -uroot -prootpass -e "create database mytest; use mytest; create table t(a int primary key); insert into t values (1); select * from t"' \
    'sudo rm -v /etc/apt/sources.list.d/tmp.list' \
    'sudo DEBIAN_FRONTEND=noninteractive apt-get update' \
    "sudo sh -c 'cat /tmp/sources.append >> /etc/apt/sources.list'" \
    'sudo DEBIAN_FRONTEND=noninteractive apt-get install -y patch libaio1 debconf-utils' \
    'sudo DEBIAN_FRONTEND=noninteractive apt-get upgrade -y'; \
done

Add Key to known_hosts

Do the following on each kvm host server (terrier, terrier2, i7, etc...) to add the VMs to known_hosts.

# saucy-amd64
cp -avi /kvm/vms/vm-saucy-amd64-install.qcow2 /kvm/vms/vm-saucy-amd64-test.qcow2
kvm -m 1024 -hda /kvm/vms/vm-saucy-amd64-test.qcow2 -redir tcp:2287::22 -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user -nographic
sudo su - buildbot
ssh -p 2287 buildbot@localhost sudo shutdown -h now
# answer "yes" when prompted
exit # the buildbot user
rm -v /kvm/vms/vm-saucy-amd64-test.qcow2

# saucy-i386
cp -avi /kvm/vms/vm-saucy-i386-install.qcow2 /kvm/vms/vm-saucy-i386-test.qcow2
kvm -m 1024 -hda /kvm/vms/vm-saucy-i386-test.qcow2 -redir tcp:2288::22 -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user -nographic
sudo su - buildbot
ssh -p 2288 buildbot@localhost sudo shutdown -h now
# answer "yes" when prompted
exit # the buildbot user
rm -v /kvm/vms/vm-saucy-i386-test.qcow2

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