Prerequisites

• None except a libvirt configuration when using a virtualized libvirt based cluster.
• A running TFTP/PXE infrastructure for autobooting the cluster or other means.
• See assumptions

Install Com.oonics packages

Install the latest comoonics rpms from a comoonics fedora yum channel:

yum install comoonics-bootimage comoonics-cdsl-py comoonics-bootimage-extras-nfs comoonics-bootimage-listfiles-fedora comoonics-bootimage-listfiles-fedora-nfs

You might also need other packages if needed see packages

Create a cluster configuration file

Create a cluster configuration file /etc/cluster/cluster.conf with the relevant com_info tags like as follows:

<?xml version="1.0"?>
<cluster config_version="1" name="axqad108" type="gfs">
   <clusternodes>
         <clusternode name="node1" nodeid="1" votes="1">
                 <com_info>
                         <rootvolume fstype="nfs" name="192.168.122.1:/home/marc/virtual/nfsosr/axqad109"/>
                         <eth name="eth0" ip="192.168.122.171" mac="00:0C:29:C9:C6:F5" mask="255.255.255.0" gateway="192.168.122.1"/>
                 </com_info>
         </clusternode>
         <clusternode name="node2" nodeid="2" votes="2">
                 <com_info>
                         <rootvolume fstype="nfs" name="192.168.122.1:/home/marc/virtual/nfsosr/axqad109"/>
                         <eth name="eth0" ip="192.168.122.172" mac="00:0C:29:C9:C6:F5" mask="255.255.255.0" gateway="192.168.122.1"/>
                 </com_info>
         </clusternode>
   </clusternodes>
</cluster>

Or download one on from cluster configurations

Create the shared root filesystem

1. See mountnfs
2. Copy all data from the local installed RHEL5 root filesystem to the shared root filesystem

cp -ax / /mnt/newroot/

3. Create some directories if need be

mkdir /mnt/newroot/proc
mkdir /mnt/newroot/sys

4. Create a new cdsl infrastructure on the shared root filesystem

com-mkcdslinfrastructure -r /mnt/newroot

5. Mount the local cdsl infrastructure

mount --bind /mnt/newroot/cluster/cdsl/1/ /mnt/newroot/cdsl.local/

6. Mount other deps to be able to chroot

mount --bind /mnt/newroot/proc /mnt/newroot/proc
mount --bind /mnt/newroot/sys /mnt/newroot/sys
mount --bind /mnt/newroot/dev /mnt/newroot/dev
chroot /mnt/newroot

7. Make '/var' hostdependent

com-mkcdsl -a /var 

8. Make '/var/lib' shared again

com-mkcdsl -s /var/lib

9. Make '/etc/sysconfig/network' hostdependent

com-mkcdsl -a /etc/sysconfig/network

Create boot configuration

1. Create the boot "filesystem" see createboot
2. Create Shared Root initrd

Create the shared root initrd into the shared boot filesystem

/opt/atix/comoonics-bootimage/mkinitrd -f /boot/initrd_sr-$(uname -r).img $(uname -r)

Afterworks

For afterworks see afterworks.

Clean up

On installnode exist the chroot and

umount /mnt/newroot/cdsl.local

umount /mnt/newroot/dev

umount /mnt/newroot/proc

umount /mnt/newroot/sys

umount /mnt/newroot

Boot Cluster

Have Fun !!