$ maas maas machine get-curtin-config aa6pnk
Success.
Machine-readable output follows:
apt:
  preserve_sources_list: false
  primary:
  - arches:
    - default
    uri: http://archive.ubuntu.com/ubuntu
  proxy: http://172.23.31.2:8000/
  security:
  - arches:
    - default
    uri: http://archive.ubuntu.com/ubuntu
debconf_selections:
  maas: 'cloud-init   cloud-init/datasources  multiselect MAAS

    cloud-init   cloud-init/maas-metadata-url  string http://172.23.31.2:5240/MAAS/metadata/

    cloud-init   cloud-init/maas-metadata-credentials  string oauth_token_key=uhN6sSq4wy3knE&oauth_consumer_key=7X3gmaa4g56&oauth_token_secret=UzBcJBjSfLRm2BpJdHZRth

    cloud-init   cloud-init/local-cloud-config  string apt:\n  preserve_sources_list:
    false\n  primary:\n  - arches: [default]\n    uri: http://archive.ubuntu.com/ubuntu\n  proxy:
    http://172.23.31.2:8000/\n  security:\n  - arches: [default]\n    uri: http://archive.ubuntu.com/ubuntu\napt_preserve_sources_list:
    true\napt_proxy: http://172.23.31.2:8000/\nmanage_etc_hosts: false\nmanual_cache_clean:
    true\nreporting:\n  maas: {consumer_key: 7X3gmaa4Jyg56, endpoint: ''http://172.23.31.2:5240/MAAS/metadata/status/aa6pnk'',\n    token_key:
    uhKN6sSq3knE, token_secret: UzBcJBYaz5jSfLRm2BpJdHZRth,\n    type:
    webhook}\nsystem_info:\n  package_mirrors:\n  - arches: [i386, amd64]\n    failsafe:
    {primary: ''http://archive.ubuntu.com/ubuntu'', security: ''http://security.ubuntu.com/ubuntu''}\n    search:\n      primary:
    [''http://archive.ubuntu.com/ubuntu'']\n      security: [''http://archive.ubuntu.com/ubuntu'']\n  -
    arches: [default]\n    failsafe: {primary: ''http://ports.ubuntu.com/ubuntu-ports'',
    security: ''http://ports.ubuntu.com/ubuntu-ports''}\n    search:\n      primary:
    [''http://ports.ubuntu.com/ubuntu-ports'']\n      security: [''http://ports.ubuntu.com/ubuntu-ports'']\n

    '
install:
  log_file: /tmp/install.log
  post_files:
  - /tmp/install.log
kernel:
  mapping: {}
  package: linux-generic
late_commands:
  maas:
  - wget
  - --no-proxy
  - http://172.23.31.2:5240/MAAS/metadata/latest/by-id/aa6pnk/
  - --post-data
  - op=netboot_off
  - -O
  - /dev/null
network:
network:
  config:
  - id: eth0
    mac_address: 60:eb:69:ed:f7:69
    mtu: 1500
    name: eth0
    subnets:
    - address: 172.23.31.42/26
      dns_nameservers: []
      gateway: 172.23.31.2
      type: static
    type: physical
  - id: eth1
    mac_address: 60:eb:69:ed:f7:6a
    mtu: 1500
    name: eth1
    subnets:
    - type: manual
    type: physical
  - id: eth2
    mac_address: 00:0f:53:07:e0:3c
    mtu: 1500
    name: eth2
    subnets:
    - type: manual
    type: physical
  - id: eth3
    mac_address: 00:0f:53:07:e0:3d
    mtu: 1500
    name: eth3
    subnets:
    - type: manual
    type: physical
  - destination: XXX.XXX.0.0/12
    gateway: 172.23.31.1
    id: 4
    metric: 0
    type: route
  - destination: XXX.XXX.0.0/16
    gateway: 172.23.31.1
    id: 5
    metric: 0
    type: route
  - destination: XXX.XXX.0.0/16
    gateway: 172.23.31.1
    id: 6
    metric: 0
    type: route
  - address:
    - 172.23.31.2
    search:
    - maas
    type: nameserver
  version: 1
network_commands:
  builtin:
  - curtin
  - net-meta
  - custom
partitioning_commands:
  builtin:
  - curtin
  - block-meta
  - custom
power_state:
  mode: reboot
reporting:
  maas:
    consumer_key: 7X3gmaaWJyg56
    endpoint: http://172.23.31.2:5240/MAAS/metadata/status/aa6pnk
    token_key: uhKNkZwy3knE
    token_secret: UzBcJBYdkfLRm2BpJdHZRth
    type: webhook
storage:
  config:
  - grub_device: true
    id: sda
    model: PERC H700
    name: sda
    ptable: msdos
    serial: 6782bcb0347cc4001fab6fe005366e5e
    type: disk
    wipe: superblock
  - id: sdb
    model: PERC H700
    name: sdb
    serial: 6782bcb0347cc4001fbf7d2017e9541e
    type: disk
    wipe: superblock
  - id: sdc
    model: PERC H700
    name: sdc
    serial: 6782bcb0347cc4001fbf7d28185c5105
    type: disk
    wipe: superblock
  - device: sda
    id: sda-part1
    name: sda-part1
    number: 1
    offset: 4194304B
    size: 299431362560B
    type: partition
    uuid: 23bc194b-834f-4e69-9804-1f8f05af33da
    wipe: superblock
  - fstype: ext4
    id: sda-part1_format
    label: root
    type: format
    uuid: cef333fe-49cb-4d86-b38c-ee93fce436f5
    volume: sda-part1
  - device: sda-part1_format
    id: sda-part1_mount
    path: /
    type: mount
  version: 1