multinode-setup.sh

#!/bin/bash
CURDIR=$HOME/virtual
PREFIX=${1:-""}
IMGS=/home/imgs/
KS_PATH=$CURDIR/multinode.ks
URL="http://mirror.isoc.org.il/pub/centos/7/os/x86_64/"

# Install dependencies
# sudo yum install -y virt-install 

mkdir -p $IMGS

function startvm {
local NAME=$1
virsh --connect qemu:///system destroy "$NAME"
virsh -c qemu:///system snapshot-list ${NAME} --name |while read s; do virsh snapshot-delete ${NAME} "$s"; done
virsh --connect qemu:///system undefine "$NAME" --remove-all-storage
sleep 2
rm -f "$IMGS/${NAME}.qcow2"
qemu-img create -f qcow2 -o preallocation=metadata $IMGS/${NAME}.qcow2 80G

virt-install --hvm \
        --connect qemu:///system \
        --network bridge=br0 \
        --graphics spice \
        --name "${NAME}" \
        --ram=8192 \
        --vcpus=6 \
        --os-type=linux \
        --os-variant=rhel7 \
        --disk path=$IMGS/${NAME}.qcow2 \
        --initrd-inject="${KS_PATH}" \
        --extra-args "ks=file:/multinode.ks" \
        --location $URL \
        --noautoconsole \
        --cpu host
}

startvm "${PREFIX}subnode-0"
startvm "${PREFIX}subnode-1"

sleep 180

for i in {1..20}; do
        if virsh list --all | grep " ${PREFIX}subnode-0 " | grep "shut off"; then
                break
        else
                sleep 60
        fi
done
for i in {1..20}; do
        if virsh list --all | grep " ${PREFIX}subnode-1 " | grep "shut off"; then
                break
        else
                sleep 60
        fi
done
virsh start "${PREFIX}subnode-0"
virsh start "${PREFIX}subnode-1"
sleep 30
echo "Ready!"