Samples to create a cloud-init configuration ISO.

Build_seed_iso

$ genisoimage  -output seed.iso -volid cidata -joliet -rock user-data meta-data

meta-data

local-hostname: asvignesh.local
# eth0 is the default network interface enabled in the image. You can
# configure static network settings with an entry like below.
#network-interfaces: |
#  iface eth0 inet static
#  address 192.168.1.10
#  network 192.168.1.0
#  netmask 255.255.255.0
#  broadcast 192.168.1.255
#  gateway 192.168.1.254

user-data

#cloud-config
# vim:syntax=yaml
users:
# A user by the name ec2-user is created in the image by default.
  - default
# Following entry create user1 and assigns password specified in plain text.
# Please not use of plain text password is not recommended from security best
# practises standpoint
  - name: user1
    groups: sudo
    sudo: ['ALL=(ALL) NOPASSWD:ALL']
    plain_text_passwd: < plain text password here >
    lock_passwd: false
# Following entry creates user2 and attaches a hashed passwd to the user. Hashed
# passwords can be generated with:
# python -c 'import crypt,getpass; print crypt.crypt(getpass.getpass())'
  - name: user2
    passwd: < hashed password here >
    lock_passwd: false
# Following entry creates user3, disables password based login and enables an SSH public key
  - name: user3
    ssh-authorized-keys:
      - < ssh public key here >
    lock_passwd: true
chpasswd:
  list: |
    ec2-user:< plain text password here >