gistfile1.sh

#!/bin/bash
set -eu
set -o pipefail

scriptname=$(basename $0)
base_dir=/home/greghaynes

if [ -z "$(which virt-install)" ]; then
    echo "virt-install not found"
    exit 1
fi

function usage() {
    exitval=${1:-1}

    echo "usage: $scriptname vm-name disk net_bridge [passthrough]"
    echo ""
    echo "vm-name:     A name for the vm. The build dir and hostname are named"
    echo "             this."
    echo "disk:        A raw disk for the vm containing a cloud image. Can be"
    echo "             a block device or qcow2 image."
    echo "net_bridge:  Name of bridge interface for the vm."
    echo "passthrough: These are passed through to the virt-install command."

    exit $exitval
}

name="${1:-}"
if [ -z "$name" ]; then
    echo "vm-name required"
    usage
fi

disk="${2:-}"
if [ -z "$disk" ]; then
    echo "disk required"
    usage
fi

net_bridge="${3:-}"
if [ -z "$net_bridge" ]; then
    echo "network bridge required"
    usage
fi

build_dir=$base_dir/$name
metadata_path=$build_dir/meta-data
userdata_path=$build_dir/user-data
ci_iso=$build_dir/seed.iso

instance_id=$(uuidgen)

mkdir $build_dir

cat > $metadata_path <<EOF
instance-id: $instance_id
local-hostname: $name
EOF

cat > $userdata_path <<EOF
#cloud-config
users:
  - name: greghaynes
    gecos: Gregory Haynes
    ssh-authorized-keys:
      - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGMbMD1SAzlRPPBkGxUcv2279Yis/0GgjueFFiOdACyKytuWT8pMuPs+kZqwe10X5yNil0j7S4IBaKtRG06IsbBTtMosu5eVTuxt4uudXBsEaLIajVPtJ8ClDTbUt3+OfHgmPcICWPp/JnRS9GvvTukTj7PRYOeMFOI8nGwcBz0pSGA5jxgbRSF+rYz1UOlSNqbIUWlKqvqOOCmRtKdWyUmQnxPDUKt2jag9lRG9lSCTo9u9nuh626MILUOxWEwLDanYwh6bRAxKvkFV/xVxtG1qpxE2Q6krhseZyhXUsH6WWLqGkCqx/Pjspocnaa5ahHfGGVQBRswe0e8YrVf90V root@missingno
    sudo: ALL=(ALL) NOPASSWD:ALL
    lock-passwd: true
EOF

set -x
genisoimage -output $ci_iso -volid cidata -joliet -rock $userdata_path $metadata_path
virt-install --virt-type kvm --name $name -mirror --ram 1024 --disk=$disk --disk=$ci_iso --boot hd --network "bridge=$net_bridge,mac=RANDOM" ${@:4}