boot-assisted-cluster.sh

#!/bin/bash

virt_connect="--connect=qemu:///session"
virsh="virsh ${virt_connect}"
svirsh="sudo virsh"
count=3
onlyone=$1
name=beekhof

SCRIPT_vm_vcpu=2
SCRIPT_vm_ram=8192
SCRIPT_vm_disk=120G
SCRIPT_vm_home="/home/Development/virt"
SCRIPT_iso=/tmp/cluster-72726600-bd58-4191-916e-33abfca25f37-discovery.iso

while [[ $# -gt 0 ]]; do
    case $1 in
	--) ;;
	-x) set -x; shift;;
	--disk) SCRIPT_vm_disk=$2; shift; shift;;
	--cpu) SCRIPT_vm_vcpu=$2; shift; shift;;
	--ram) SCRIPT_vm_ram=$2; shift; shift;;
	--key) SCRIPT_vm_KEY=$2; shift; shift;;
	--name) name=$2; shift; shift;;
	--iso) SCRIPT_iso=$2; shift; shift;;
	[1-9]) count=$1; shift;;
    esac
done

mkdir -p $HOME/.qemu
mkdir -p ${SCRIPT_vm_home}
cd ${SCRIPT_vm_home}

rpm -qa | grep virt-install
if [ $? != 0 ]; then
    sudo yum install -y virt-install
fi

opts="--force"

# Turn off install logs
opts="$opts --noautoconsole"
# Leave disabled to build in the foreground.
# To continue once complete, shut down the guest or ctrl-] to detach 

#    --console pty,target_type=virtio 
#Create the regular-guest

sudo firewall-cmd --add-port=3128/tcp --zone=libvirt --permanent
sudo firewall-cmd --reload

ip=10
lastoct=$(echo ${name} | md5sum | tr -d abcdef- | cut -c 1-2)
for offset in $(seq 1 $count); do

    target=${name}-${offset}
    $virsh destroy  $target > /dev/null 2>&1
    $virsh undefine $target > /dev/null 2>&1
    MAC="54:52:$(echo ${name} | md5sum | tr -d abcdef- | cut -c 1-2):$(echo ${name} | md5sum | tr -d abcdef- | cut -c 3-4):01:0${offset}"

    $svirsh net-dhcp-leases default | grep ${MAC}
    #if [ $? = 0 ]; then
	$svirsh net-update default delete ip-dhcp-host "<host mac='${MAC}'/>" --live --config 2>&1 > /dev/null
    #fi

    network=$( $svirsh net-dumpxml default | grep range | awk -F \' '{print $2}' | awk -F . '{print $1"."$2"."$3}' )
    rc=1
    while [ 1 = 1 ]; do
      $svirsh net-update default add ip-dhcp-host "<host mac='${MAC}' name='${name}-${offset}' ip='${network}.${ip}'/>" --live --config
      rc=$?
      if [ $rc = 0 ]; then
        break
      elif [ $ip -gt 254 ]; then
	echo "No more IPs left"
        exit 1
      else
        ip=$(($ip + 1))
      fi 
    done

    disk=${SCRIPT_vm_home}/${target}.cow
    rm -f ${disk}
    qemu-img create -f qcow2 -o preallocation=metadata ${disk} ${SCRIPT_vm_disk}
    ls -lash ${disk}

    #		 --extra-args="console=tty0 console=ttyS0,115200 serial rd_NO_PLYMOUTH" \
    virt-install ${virt_connect} \
		 --network=bridge:virbr0,mac=${MAC} \
		 --cdrom $SCRIPT_iso \
		 --name=${target} \
		 --disk path=${disk},format=qcow2,cache=none \
		 --ram ${SCRIPT_vm_ram} \
		 --vcpus=${SCRIPT_vm_vcpu} \
		 --os-variant rhel8.0 \
		 --check-cpu \
		 --accelerate \
		 --os-type linux \
		 --cpuset auto \
		 --hvm \
                 --debug \
                 --autostart \
		 --events on_reboot=restart \
		 --nographics $opts
#		 --console="tty0 console=ttyS0,115200 serial rd_NO_PLYMOUTH" \
    if [ $? != 0 ]; then
	echo "Could not build image"
	exit 1
    fi

    ip=$(($ip + 1))

done