Buildbot Setup for Virtual Machines - Red Hat 6 x86

Il seguente procedimento è stato usato per creare un buildslave Red Hat 6 x86.

Setup iniziale

cd vms
qemu-img create -f qcow2 vm-rhel6-x86-base.qcow2 8G
kvm -m 1024 -hda vm-rhel6-x86-base.qcow2 -cdrom ../iso/red-hat/rhel-server-6.0-i386-dvd.iso -redir 'tcp:22275::22' -boot d -smp 2 -cpu qemu32,-nx -net nic,model=virtio -net user

All'avvio della VM andare al prompt.

Re-inizializzare il drive, quando viene chiesto.

Impostare l'Hostname a "rhel6-x86".

Configurare la rete, impostare eth0 a "Connect Automatically"

Impostare la password di root.

Impostare il tipo di partizionamento a: Use All Space

Non criptare le partizioni (comporta solo un ritardo).

Selezionare "Write Changes to Disk" nella popup, quando appare..

Impostare il software a "Virtual Host".

Dopo aver cliccato su next nella schermata del tipo di installazione, l'installazione comincia.

Una volta completata, cliccare reboot. Poi arrestare la VM.

Configurare la console seriale

cd vms
qemu-img create -b vm-rhel6-x86-base.qcow2 -f qcow2 vm-rhel6-x86-serial.qcow2
kvm -m 1024 -hda vm-rhel6-x86-serial.qcow2 -redir 'tcp:22275::22' -boot c -smp 2 -cpu qemu32,-nx -net nic,model=virtio -net user

Entrare come root.

Aggiungere a /boot/grub/menu.lst:

serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
terminal --timeout=3 serial console

Inoltre aggiungere in menu.lst alla riga del kernel (dopo aver cancellato 'quiet'):

console=tty0 console=ttyS0,115200n8

Aggiungere il prompt del login alla console seriale:

cat >>/etc/inittab <<END

# Console seriale.
S0:2345:respawn:/sbin/agetty -h -L ttyS0 19200 vt100
END

Create buildbot account

With the network up and running, it's time to add a user so that we don't have to login as root all the time.

useradd buildbot
# Password is disabled by default in Centos5.
usermod -a -G wheel buildbot
visudo
# Uncomment the line "%wheel        ALL=(ALL)       NOPASSWD: ALL"
# Comment out this line:
# Defaults    requiretty

# Put in public ssh key for own account and host buildbot account.
# Note that Centos5 seems to require .ssh/authorized_keys chmod go-rwx.
su - buildbot
mkdir .ssh
chmod go-rwx .ssh

# scp the key from the vm host over to .ssh/authorized_keys

chmod go-rwx .ssh/authorized_keys

Now logout and then ssh to the VM as the buildbot user. On my local box I added the following to my /.ssh/config file to make logging in easier:

Host rhel6-x86
HostName localhost
  User buildbot
  IdentityFile ~/.ssh/id_rsa
  Port 2225

With the above in place I can simply type:

ssh rhel6-x86

...to connect to the vm.

RHN and Updates

Register the system with RHN:

sudo rhn_register

Choose defaults when registering. After the process is complete:

sudo yum update

The first time you update you'll be prompted to import some GPG keys from Red Hat. The updating process may take a while, depending on the number of updates and the speed of your Internet connection.

After updating shutdown so we can make more copies.

sudo shutdown -h now

Image for RPM Build

qemu-img create -b vm-rhel6-x86-serial.qcow2 -f qcow2 vm-rhel6-x86-build.qcow2
kvm -m 1024 -hda vm-rhel6-x86-build.qcow2 -redir 'tcp:22275::22' -boot c -smp 2 -cpu qemu32,-nx -net nic,model=virtio -net user -nographic

Wait for the system to boot.

Install compilers etc:

sudo yum groupinstall "Development Tools"
sudo yum install libaio-devel openssl-devel

If the "Development Tools" group is not available, the following lines will install the packages from it:

# Mandatory Packages:
sudo yum install autoconf automake binutils bison flex gcc gcc-c++ gettext
sudo yum install libtool make patch pkgconfig redhat-rpm-config rpm-build

# Default Packages:
sudo yum install byacc cscope ctags cvs diffstat doxygen elfutils gcc-gfortran
sudo yum install git indent intltool patchutils rcs subversion swig systemtap

# Optional Packages:
sudo yum install ElectricFence ant babel bzr chrpath cmake compat-gcc-34
sudo yum install compat-gcc-34-c++ compat-gcc-34-g77 dejagnu expect gcc-gnat
sudo yum install gcc-java gcc-objc gcc-objc++ imake jpackage-utils libstdc++-docs
sudo yum install mercurial mod_dav_svn nasm perltidy python-docs rpmdevtools
sudo yum install rpmlint systemtap-sdt-devel systemtap-server

Other packages to install:

sudo yum install gperf readline-devel ncurses-devel zlib-devel perl perl\(DBI\)

Create rpm directories and download 5.0 rpm for shared-compat:

sudo mkdir -vp /usr/src/redhat/SOURCES /usr/src/redhat/SPECS /usr/src/redhat/RPMS /usr/src/redhat/SRPMS
sudo mkdir -vp /srv/shared/yum/CentOS/5/i386/RPMS/
cd /srv/shared/yum/CentOS/5/i386/RPMS/
sudo wget http://mirror.ourdelta.org/yum/CentOS/5/i386/RPMS/MySQL-OurDelta-shared-5.0.87.d10-65.el5.i386.rpm

Image for install/test

qemu-img create -b vm-rhel6-x86-serial.qcow2 -f qcow2 vm-rhel6-x86-install.qcow2
kvm -m 1024 -hda vm-rhel6-x86-install.qcow2 -redir 'tcp:22275::22' -boot c -smp 2 -cpu qemu32,-nx -net nic,model=virtio -net user -nographic

Install extra dependencies:

sudo yum install perl perl\(DBI\)