Buildbot Setup for Virtual Machines - Fedora 20

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

Base Install

qemu-img create -f qcow2 /kvm/vms/vm-fedora20-i386-serial.qcow2 20G
qemu-img create -f qcow2 /kvm/vms/vm-fedora20-amd64-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-fedora20-i386-serial.qcow2 -cdrom /ds413/iso/fedora/Fedora-20-i386-DVD.iso -redir tcp:2291::22 -boot d -smp 2 -cpu qemu64 -net nic,model=virtio -net user
kvm -m 2048 -hda /kvm/vms/vm-fedora20-amd64-serial.qcow2 -cdrom /ds413/iso/fedora/Fedora-20-x86_64-DVD.iso -redir tcp:2292::22 -boot d -smp 2 -cpu qemu64 -net nic,model=virtio -net user

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. The Fedora installer has just resized the vnc screen. Simply reconnect.

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

• Set the language to English(US)

• Set the timezone to Etc/Greenwich Mean Time timezone

• Change "Software Selection" to "Minimal Install" (default is "Gnome Desktop")

• Under "Network Configuration" set the hostnames to fedora20-amd64 and fedora20-i386

• For "Installation Destination" select the disk then click continue.

  • On "Installation Options" screen, select the "Partition scheme" drop-down menu and select "Standard Partition". We do not want LVM.

  • do not check the encryption checkbox

• Select the "Begin installation" button to start the install

• While installing, set the root password and an initial user.

  • Be sure the initial user is an administrator

When the install is finished, you will be prompted to reboot. Go ahead and do so, but it will fail. Kill the VM after the reboot fails and start it up again with:

kvm -m 2048 -hda /kvm/vms/vm-fedora20-i386-serial.qcow2 -redir tcp:2291::22 -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user
kvm -m 2048 -hda /kvm/vms/vm-fedora20-amd64-serial.qcow2 -redir tcp:2292::22 -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user

Log in using the initial user created during the install:

ssh -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost
ssh -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost

After logging in, add the initial user to the "wheel" group.

sudo usermod -a -G wheel ${username}

Enable password-less sudo for the "wheel" group and serial console sudo:

sudo visudo
# Uncomment the line "%wheel        ALL=(ALL)       NOPASSWD: ALL"
# Comment out this line:
# Defaults    requiretty

Edit /boot/grub/menu.lst:

sudo vi /etc/default/grub

# Add/edit these entries:
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 grub2-mkconfig -o /boot/grub2/grub.cfg

Logout and then, from the VM host server:

Create a .ssh folder:

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost "mkdir -v .ssh"
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost "mkdir -v .ssh"

Copy over the authorized keys file:

scp -P 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/authorized_keys localhost:.ssh/
scp -P 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/authorized_keys localhost:.ssh/

Set permissions on the .ssh folder correctly:

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost "chmod -vR go-rwx .ssh"
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ~/.ssh/buildbot.id_dsa localhost "chmod -vR go-rwx .ssh"

Create the buildbot user:

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no localhost 'chmod -vR go-rwx .ssh; sudo adduser buildbot; sudo usermod -a -G wheel buildbot; sudo mkdir ~buildbot/.ssh; sudo cp -vi .ssh/authorized_keys ~buildbot/.ssh/; sudo chown -vR buildbot:buildbot ~buildbot/.ssh; sudo chmod -vR go-rwx ~buildbot/.ssh'
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no localhost 'chmod -vR go-rwx .ssh; sudo adduser buildbot; sudo usermod -a -G wheel buildbot; sudo mkdir ~buildbot/.ssh; sudo cp -vi .ssh/authorized_keys ~buildbot/.ssh/; sudo chown -vR buildbot:buildbot ~buildbot/.ssh; sudo chmod -vR go-rwx ~buildbot/.ssh'

su to the local buildbot user and ssh to the vm to put the key in known_hosts:

For i386:

sudo su - buildbot
ssh -p 2291 buildbot@localhost
# exit, then exit again

For amd64:

sudo su - buildbot
ssh -p 2292 buildbot@localhost
# exit, then exit again

Upload the ttyS0 file and put it where it goes:

scp -P 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/ttyS0 buildbot@localhost:
scp -P 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/ttyS0 buildbot@localhost:

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost 'sudo mkdir -v /etc/event.d;sudo mv -vi ttyS0 /etc/event.d/;'
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost 'sudo mkdir -v /etc/event.d;sudo mv -vi ttyS0 /etc/event.d/;'

Update the VM:

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost

Once logged in:

sudo yum -y update

Change selinux policy to permissive:

sudo sed -i 's/SELINUX=enforcing/SELINUX=permissive/' /etc/selinux/config

After updating, exit, then shut down the VM:

exit

ssh -t -p 2291 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost 'sudo shutdown -h now;exit'
ssh -t -p 2292 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no buildbot@localhost 'sudo shutdown -h now;exit'

VMs for building .rpms

for i in '/kvm/vms/vm-fedora20-i386-serial.qcow2 2291 qemu64' '/kvm/vms/vm-fedora20-amd64-serial.qcow2 2292 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_build_$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 yum -y groupinstall 'Development Tools'" \
  "sudo yum -y install yum-utils" \
  "sudo yum-builddep -y mariadb" \
  "sudo yum -y install automake libtool flex pkgconfig gcc-c++ libevent-devel python-devel ruby-devel rpm-build Judy-devel" \
  "sudo yum -y install cmake tar wget tree gperf readline-devel ncurses-devel zlib-devel pam-devel libaio-devel openssl-devel" \
  "sudo yum -y install libxml2 libxml2-devel bison bison-devel boost-devel unixODBC-devel bzr perl perl\(DBI\)" \
  "sudo yum -y remove systemtap-sdt-dev" \
  "bzr co --lightweight lp:mariadb-native-client" \
  "sudo mkdir -vp /usr/src/redhat/SOURCES /usr/src/redhat/SPECS /usr/src/redhat/RPMS /usr/src/redhat/SRPMS" \
  "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.

for i in '/kvm/vms/vm-fedora20-i386-serial.qcow2 2291 qemu64' '/kvm/vms/vm-fedora20-amd64-serial.qcow2 2292 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_install_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/install/')" \
    "sudo yum -y update" \
    "sudo yum -y install patch tar libaio perl perl-Time-HiRes perl-DBI unixODBC Judy" ; \
done

VMs for MariaDB upgrade testing (Fedora repo)

for i in '/kvm/vms/vm-fedora20-i386-serial.qcow2 2291 qemu64' '/kvm/vms/vm-fedora20-amd64-serial.qcow2 2292 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_upgrade_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/upgrade/')" \
    "sudo yum -y update" \
    "sudo yum -y install patch tar mariadb-server libtool-ltdl unixODBC Judy" \
    "sudo systemctl enable mariadb.service" \
    "sudo systemctl start mariadb.service" \
    'mysql -uroot -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 (MariaDB repo)

for i in '/kvm/vms/vm-fedora20-amd64-serial.qcow2 2292 qemu64' '/kvm/vms/vm-fedora20-i386-serial.qcow2 2291 qemu64' ; do \
  set $i; \
  runvm --user=buildbot --logfile=kernel_upgrade2_$2.log --base-image=$1 --port=$2 --cpu=$3 "$(echo $1 | sed -e 's/serial/upgrade2/')" \
    'sudo yum -y update' \
    "= scp -P $2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/MariaDB-${2}.repo buildbot@localhost:/tmp/MariaDB.repo" \
    'sudo rpm --verbose --import https://yum.mariadb.org/RPM-GPG-KEY-MariaDB' \
    'sudo mv -vi /tmp/MariaDB.repo /etc/yum.repos.d/' \
    'sudo yum -y remove mysql-libs' \
    'sudo yum -y install MariaDB-server MariaDB-client MariaDB-test libtool-ltdl unixODBC Judy' \
    'sudo yum -y install cronie cronie-anacron crontabs.noarch patch tar' \
    'sudo /etc/init.d/mysql start' \
    'mysql -uroot -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/yum.repos.d/MariaDB.repo' \
    'sudo yum -y update' \
    "= scp -P $2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no /kvm/vms/MariaDB.local.repo buildbot@localhost:/tmp/" \
    'sudo mv -vi /tmp/MariaDB.local.repo /etc/yum.repos.d/'; \
done

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