installramdisk.bash

#!/bin/bash -e
RAMDISKNAME=base-1309191049

IMAGEFILE=${RAMDISKNAME}_live.squash
IMAGEURL=https://flight-images.s3.eu-west-2.amazonaws.com/${IMAGEFILE}
SUPPORTPACKFILE=${RAMDISKNAME}_live.supportpack
SUPPORTPACKURL=https://flight-images.s3.eu-west-2.amazonaws.com/${SUPPORTPACKFILE}

DEPLOYMENTDIR=/opt/flight/deployment/ramdisk
IMAGEDIR=${DEPLOYMENTDIR}/${RAMDISKNAME}
HTTPDIR=/deployment/ramdisk/${RAMDISKNAME}

PXEBOOT=/var/lib/tftpboot/boot/
PXEDEFAULT=/var/lib/tftpboot/pxelinux.cfg/default

if ! [ -d ${IMAGEDIR} ]; then
  mkdir -p ${IMAGEDIR}
else
  echo "An image by the name of '${RAMDISKNAME}' already exists" >&2
  exit 1
fi

echo "Fetching Image.."
curl ${IMAGEURL} > ${IMAGEDIR}/${IMAGEFILE}

echo "Fetching Support Pack.."
curl ${SUPPORTPACKURL} > ${IMAGEDIR}/${SUPPORTPACKFILE}

echo "Installing boot files.."
tar -zxvf ${IMAGEDIR}/${SUPPORTPACKFILE} -C ${PXEBOOT}

echo "Creating login key.."
ssh-keygen -t rsa -N '' -f ${IMAGEDIR}/sshkey

echo "Creating default metadata.."
cat << EOF > ${IMAGEDIR}/meta-data
instance-id: iid-local01
dsmode: local
local-hostname: flightlive
hostname: flightlive
fqdn: flightlive.privatecluster.alces.network
public-keys:
  - `cat ${IMAGEDIR}/sshkey.pub`
EOF
cat << EOF > ${IMAGEDIR}/user-data
#cloud-config
disable_root: 0
ssh_pwauth:   1
chpasswd:
  list: |
     root:0p3nflight
system_info:
  default_user:
    name: flightadmin
    lock_passwd: true
    gecos: Local Administrator
    groups: [wheel, adm, systemd-journal]
    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
    shell: /bin/bash
EOF

echo "Adding entry to pxedefault.."
cat << EOF >> ${PXEDEFAULT}

LABEL flightdiskless-${RAMDISKNAME}
     MENU LABEL flightdiskless-${RAMDISKNAME}
     KERNEL boot/kernel-${RAMDISKNAME}
     APPEND initrd=boot/initramfs-${RAMDISKNAME} root=live:http://10.10.0.1/${HTTPDIR}/${IMAGEFILE} rd.writable.fsimg=1 rw selinux=0 ds=nocloud-net;s=http://10.10.0.1/${HTTPDIR}/

EOF