cloud-config.yml

#cloud-config
groups:
  - foo

users:
  - default # use the default users/groups that come with this o.s. 
  - name: bar # create a user named bar
    gecos: Bar User # comment field. use for full name, room number, etc.
    primary-group: foo # set bar's primary group to foo
    groups: sudo # also add bar to the sudo group
    no-user-group: true # don't create a user group for bar
    passwd: 
      # generate a password hash by running 
      # `mkpasswd --method=sha-512 --rounds=4096` 
      # and paste the result in the field above
    shell: /bin/bash # safe default
    ssh-authorized-keys:
      - 
        # generate an ssh key with 
        # `ssh-keygen -t rsa -b 4096 -C "Bar's SSH Key" -f ~/.ssh/bar_key_rsa`
        # give it a strong password, then copy & paste the contents of
        # ~/.ssh/bar_key_rsa.pub in the field above (next to the dash)
    sudo: ['ALL=(ALL) NOPASSWD:ALL'] # allow bar to use sudo without 
                                     # requiring a password
                                     # USE WITH CAUTION!

# upgrade all packages on the system on first boot
# note: by default, package index is refreshed automatically upon first boot
package_upgrade: true

# install packages
# note: not intended for full provisioning. only add what is necessary to 
# bootstrap other provisioning software (e.g., ansible)
packages:
  - python
  - python-apt

# use datasource for cloud provider
datasource:
  DigitalOcean:
    retries: 3
    timeout: 2