MAAS CLI-only machine deployment

Bill Wear

on 8 December 2020

Continuing in our series on CLI-only MAAS operation, it’s time to deploy machines. In the previous post, we reached the point of creating and commissioning machines, using only the MAAS CLI. Moving forward, there are two key steps: acquiring machines, and then deploying them. Let’s take a look

Acquiring a machine using the CLI

When a machine has finished commissioning,we can acquire it like this:

stormrider@wintermute:~$ maas admin machines allocate \
system_id=bhxws3

If you correctly enter this command — substituting your own machine’s system ID for the bhxws3shown here — you should get JSON output similar to this:


Success.
Machine-readable output follows:
{
    "raids": [],
    "zone": {
        "name": "default",
        "description": "",
        "id": 1,
        "resource_uri": "/MAAS/api/2.0/zones/default/"
    },
    "current_commissioning_result_id": 8,
    "storage_test_status": 2,
    "current_testing_result_id": 9,
    "bcaches": [],
    "ip_addresses": [
        "192.168.123.190"
    ],
    "pool": {
        "name": "default",
        "description": "Default pool",
        "id": 0,
        "resource_uri": "/MAAS/api/2.0/resourcepool/0/"
    },
    "physicalblockdevice_set": [
        {
            "firmware_version": "2.5+",
            "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
            "system_id": "bhxws3",
            "partition_table_type": "GPT",
            "type": "physical",
            "block_size": 512,
            "id": 3,
            "numa_node": 0,
            "partitions": [
                {
                    "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                    "size": 5360320512,
                    "bootable": false,
                    "tags": [],
                    "id": 3,
                    "used_for": "ext4 formatted filesystem mounted at /",
                    "device_id": 3,
                    "system_id": "bhxws3",
                    "path": "/dev/disk/by-dname/sda-part2",
                    "type": "partition",
                    "filesystem": {
                        "fstype": "ext4",
                        "label": "root",
                        "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                        "mount_point": "/",
                        "mount_options": null
                    },
                    "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
                }
            ],
            "filesystem": null,
            "available_size": 0,
            "size": 5368709120,
            "storage_pool": null,
            "model": "QEMU HARDDISK",
            "used_size": 5366611968,
            "tags": [
                "ssd"
            ],
            "used_for": "GPT partitioned with 1 partition",
            "uuid": null,
            "name": "sda",
            "path": "/dev/disk/by-dname/sda",
            "serial": "QM00001",
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
        }
    ],
    "swap_size": null,
    "storage": 5368.70912,
    "node_type_name": "Machine",
    "system_id": "bhxws3",
    "owner_data": {},
    "special_filesystems": [],
    "tag_names": [
        "virtual"
    ],
    "cpu_test_status_name": "Unknown",
    "locked": false,
    "cpu_count": 1,
    "volume_groups": [],
    "storage_test_status_name": "Passed",
    "hardware_info": {
        "system_vendor": "QEMU",
        "system_product": "Standard PC (i440FX + PIIX, 1996)",
        "system_family": "Unknown",
        "system_version": "pc-i440fx-focal",
        "system_sku": "Unknown",
        "system_serial": "Unknown",
        "cpu_model": "Intel Core Processor (Skylake, IBRS)",
        "mainboard_vendor": "Unknown",
        "mainboard_product": "Unknown",
        "mainboard_serial": "Unknown",
        "mainboard_version": "Unknown",
        "mainboard_firmware_vendor": "SeaBIOS",
        "mainboard_firmware_date": "04/01/2014",
        "mainboard_firmware_version": "1.13.0-1ubuntu1",
        "chassis_vendor": "QEMU",
        "chassis_type": "Other",
        "chassis_serial": "Unknown",
        "chassis_version": "pc-i440fx-focal"
    },
    "node_type": 0,
    "other_test_status": -1,
    "hostname": "ace-swan",
    "interface_test_status": -1,
    "boot_interface": {
        "link_speed": 0,
        "params": "",
        "vendor": "Red Hat, Inc.",
        "firmware_version": null,
        "system_id": "bhxws3",
        "enabled": true,
        "type": "physical",
        "links": [
            {
                "id": 15,
                "mode": "auto",
                "subnet": {
                    "name": "192.168.123.0/24",
                    "description": "",
                    "vlan": {
                        "vid": 0,
                        "mtu": 1500,
                        "dhcp_on": true,
                        "external_dhcp": null,
                        "relay_vlan": null,
                        "fabric": "fabric-2",
                        "id": 5003,
                        "secondary_rack": null,
                        "primary_rack": "8dwnne",
                        "name": "untagged",
                        "fabric_id": 2,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                    },
                    "cidr": "192.168.123.0/24",
                    "rdns_mode": 2,
                    "gateway_ip": null,
                    "dns_servers": [],
                    "allow_dns": true,
                    "allow_proxy": true,
                    "active_discovery": false,
                    "managed": true,
                    "id": 4,
                    "space": "undefined",
                    "resource_uri": "/MAAS/api/2.0/subnets/4/"
                }
            }
        ],
        "id": 10,
        "discovered": [
            {
                "subnet": {
                    "name": "192.168.123.0/24",
                    "description": "",
                    "vlan": {
                        "vid": 0,
                        "mtu": 1500,
                        "dhcp_on": true,
                        "external_dhcp": null,
                        "relay_vlan": null,
                        "fabric": "fabric-2",
                        "id": 5003,
                        "secondary_rack": null,
                        "primary_rack": "8dwnne",
                        "name": "untagged",
                        "fabric_id": 2,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                    },
                    "cidr": "192.168.123.0/24",
                    "rdns_mode": 2,
                    "gateway_ip": null,
                    "dns_servers": [],
                    "allow_dns": true,
                    "allow_proxy": true,
                    "active_discovery": false,
                    "managed": true,
                    "id": 4,
                    "space": "undefined",
                    "resource_uri": "/MAAS/api/2.0/subnets/4/"
                },
                "ip_address": "192.168.123.190"
            }
        ],
        "numa_node": 0,
        "children": [],
        "parents": [],
        "link_connected": true,
        "effective_mtu": 1500,
        "tags": [],
        "sriov_max_vf": 0,
        "interface_speed": 0,
        "name": "ens3",
        "mac_address": "52:54:00:15:36:f2",
        "product": null,
        "vlan": {
            "vid": 0,
            "mtu": 1500,
            "dhcp_on": true,
            "external_dhcp": null,
            "relay_vlan": null,
            "fabric": "fabric-2",
            "id": 5003,
            "secondary_rack": null,
            "primary_rack": "8dwnne",
            "name": "untagged",
            "fabric_id": 2,
            "space": "undefined",
            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
        },
        "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/interfaces/10/"
    },
    "memory": 1024,
    "memory_test_status_name": "Unknown",
    "default_gateways": {
        "ipv4": {
            "gateway_ip": null,
            "link_id": null
        },
        "ipv6": {
            "gateway_ip": null,
            "link_id": null
        }
    },
    "blockdevice_set": [
        {
            "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
            "size": 5368709120,
            "block_size": 512,
            "tags": [
                "ssd"
            ],
            "system_id": "bhxws3",
            "partition_table_type": "GPT",
            "type": "physical",
            "id": 3,
            "numa_node": 0,
            "partitions": [
                {
                    "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                    "size": 5360320512,
                    "bootable": false,
                    "tags": [],
                    "id": 3,
                    "used_for": "ext4 formatted filesystem mounted at /",
                    "device_id": 3,
                    "system_id": "bhxws3",
                    "path": "/dev/disk/by-dname/sda-part2",
                    "type": "partition",
                    "filesystem": {
                        "fstype": "ext4",
                        "label": "root",
                        "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                        "mount_point": "/",
                        "mount_options": null
                    },
                    "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
                }
            ],
            "filesystem": null,
            "available_size": 0,
            "storage_pool": null,
            "model": "QEMU HARDDISK",
            "used_size": 5366611968,
            "used_for": "GPT partitioned with 1 partition",
            "uuid": null,
            "name": "sda",
            "path": "/dev/disk/by-dname/sda",
            "serial": "QM00001",
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
        }
    ],
    "interface_set": [
        {
            "link_speed": 0,
            "params": "",
            "vendor": "Red Hat, Inc.",
            "firmware_version": null,
            "system_id": "bhxws3",
            "enabled": true,
            "type": "physical",
            "links": [
                {
                    "id": 15,
                    "mode": "auto",
                    "subnet": {
                        "name": "192.168.123.0/24",
                        "description": "",
                        "vlan": {
                            "vid": 0,
                            "mtu": 1500,
                            "dhcp_on": true,
                            "external_dhcp": null,
                            "relay_vlan": null,
                            "fabric": "fabric-2",
                            "id": 5003,
                            "secondary_rack": null,
                            "primary_rack": "8dwnne",
                            "name": "untagged",
                            "fabric_id": 2,
                            "space": "undefined",
                            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                        },
                        "cidr": "192.168.123.0/24",
                        "rdns_mode": 2,
                        "gateway_ip": null,
                        "dns_servers": [],
                        "allow_dns": true,
                        "allow_proxy": true,
                        "active_discovery": false,
                        "managed": true,
                        "id": 4,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/subnets/4/"
                    }
                }
            ],
            "id": 10,
            "discovered": [
                {
                    "subnet": {
                        "name": "192.168.123.0/24",
                        "description": "",
                        "vlan": {
                            "vid": 0,
                            "mtu": 1500,
                            "dhcp_on": true,
                            "external_dhcp": null,
                            "relay_vlan": null,
                            "fabric": "fabric-2",
                            "id": 5003,
                            "secondary_rack": null,
                            "primary_rack": "8dwnne",
                            "name": "untagged",
                            "fabric_id": 2,
                            "space": "undefined",
                            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                        },
                        "cidr": "192.168.123.0/24",
                        "rdns_mode": 2,
                        "gateway_ip": null,
                        "dns_servers": [],
                        "allow_dns": true,
                        "allow_proxy": true,
                        "active_discovery": false,
                        "managed": true,
                        "id": 4,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/subnets/4/"
                    },
                    "ip_address": "192.168.123.190"
                }
            ],
            "numa_node": 0,
            "children": [],
            "parents": [],
            "link_connected": true,
            "effective_mtu": 1500,
            "tags": [],
            "sriov_max_vf": 0,
            "interface_speed": 0,
            "name": "ens3",
            "mac_address": "52:54:00:15:36:f2",
            "product": null,
            "vlan": {
                "vid": 0,
                "mtu": 1500,
                "dhcp_on": true,
                "external_dhcp": null,
                "relay_vlan": null,
                "fabric": "fabric-2",
                "id": 5003,
                "secondary_rack": null,
                "primary_rack": "8dwnne",
                "name": "untagged",
                "fabric_id": 2,
                "space": "undefined",
                "resource_uri": "/MAAS/api/2.0/vlans/5003/"
            },
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/interfaces/10/"
        }
    ],
    "numanode_set": [
        {
            "index": 0,
            "memory": 985,
            "cores": [
                0
            ]
        }
    ],
    "min_hwe_kernel": "",
    "memory_test_status": -1,
    "power_type": "virsh",
    "power_state": "off",
    "status": 10,
    "testing_status_name": "Passed",
    "interface_test_status_name": "Unknown",
    "cache_sets": [],
    "constraints_by_type": {},
    "domain": {
        "authoritative": true,
        "ttl": null,
        "id": 0,
        "resource_record_count": 0,
        "name": "maas",
        "is_default": true,
        "resource_uri": "/MAAS/api/2.0/domains/0/"
    },
    "network_test_status": -1,
    "current_installation_result_id": null,
    "bios_boot_method": "pxe",
    "status_name": "Allocated",
    "address_ttl": null,
    "fqdn": "ace-swan.maas",
    "cpu_speed": 0,
    "hwe_kernel": null,
    "description": "",
    "commissioning_status_name": "Passed",
    "pod": null,
    "network_test_status_name": "Unknown",
    "hardware_uuid": "F677A842-571C-4E65-ADC9-11E2CF92D363",
    "commissioning_status": 2,
    "status_message": "Ready",
    "owner": "admin",
    "distro_series": "",
    "status_action": "",
    "testing_status": 2,
    "cpu_test_status": -1,
    "architecture": "amd64/generic",
    "netboot": true,
    "iscsiblockdevice_set": [],
    "disable_ipv4": false,
    "virtualblockdevice_set": [],
    "osystem": "",
    "boot_disk": {
        "firmware_version": "2.5+",
        "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
        "system_id": "bhxws3",
        "partition_table_type": "GPT",
        "type": "physical",
        "block_size": 512,
        "id": 3,
        "numa_node": 0,
        "partitions": [
            {
                "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                "size": 5360320512,
                "bootable": false,
                "tags": [],
                "id": 3,
                "used_for": "ext4 formatted filesystem mounted at /",
                "device_id": 3,
                "system_id": "bhxws3",
                "path": "/dev/disk/by-dname/sda-part2",
                "type": "partition",
                "filesystem": {
                    "fstype": "ext4",
                    "label": "root",
                    "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                    "mount_point": "/",
                    "mount_options": null
                },
                "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
            }
        ],
        "filesystem": null,
        "available_size": 0,
        "size": 5368709120,
        "storage_pool": null,
        "model": "QEMU HARDDISK",
        "used_size": 5366611968,
        "tags": [
            "ssd"
        ],
        "used_for": "GPT partitioned with 1 partition",
        "uuid": null,
        "name": "sda",
        "path": "/dev/disk/by-dname/sda",
        "serial": "QM00001",
        "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
    },
    "other_test_status_name": "Unknown",
    "resource_uri": "/MAAS/api/2.0/machines/bhxws3/"
}

Acquisition is a simple step, but it executes the key operation of associating your user with the machine in question, which gives you control of that resource. Once you’ve acquired a machine, deployment is the next step.

Deploying a machine with the CLI

Finally, we can deploy the machine this way:

stormrider@wintermute:~$ maas admin machine deploy bhxws3

Again, if you’ve properly entered the command and correctly substituted your machine’s system ID, you should get JSON that looks something like this:

Success.
Machine-readable output follows:
{
    "architecture": "amd64/generic",
    "cpu_speed": 0,
    "tag_names": [
        "virtual"
    ],
    "boot_interface": {
        "mac_address": "52:54:00:15:36:f2",
        "links": [
            {
                "id": 15,
                "mode": "auto",
                "subnet": {
                    "name": "192.168.123.0/24",
                    "description": "",
                    "vlan": {
                        "vid": 0,
                        "mtu": 1500,
                        "dhcp_on": true,
                        "external_dhcp": null,
                        "relay_vlan": null,
                        "fabric_id": 2,
                        "id": 5003,
                        "fabric": "fabric-2",
                        "secondary_rack": null,
                        "name": "untagged",
                        "space": "undefined",
                        "primary_rack": "8dwnne",
                        "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                    },
                    "cidr": "192.168.123.0/24",
                    "rdns_mode": 2,
                    "gateway_ip": null,
                    "dns_servers": [],
                    "allow_dns": true,
                    "allow_proxy": true,
                    "active_discovery": false,
                    "managed": true,
                    "id": 4,
                    "space": "undefined",
                    "resource_uri": "/MAAS/api/2.0/subnets/4/"
                }
            }
        ],
        "numa_node": 0,
        "enabled": true,
        "params": "",
        "firmware_version": null,
        "sriov_max_vf": 0,
        "type": "physical",
        "children": [],
        "vendor": "Red Hat, Inc.",
        "system_id": "bhxws3",
        "parents": [],
        "vlan": {
            "vid": 0,
            "mtu": 1500,
            "dhcp_on": true,
            "external_dhcp": null,
            "relay_vlan": null,
            "fabric_id": 2,
            "id": 5003,
            "fabric": "fabric-2",
            "secondary_rack": null,
            "name": "untagged",
            "space": "undefined",
            "primary_rack": "8dwnne",
            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
        },
        "link_connected": true,
        "id": 10,
        "effective_mtu": 1500,
        "discovered": [
            {
                "subnet": {
                    "name": "192.168.123.0/24",
                    "description": "",
                    "vlan": {
                        "vid": 0,
                        "mtu": 1500,
                        "dhcp_on": true,
                        "external_dhcp": null,
                        "relay_vlan": null,
                        "fabric_id": 2,
                        "id": 5003,
                        "fabric": "fabric-2",
                        "secondary_rack": null,
                        "name": "untagged",
                        "space": "undefined",
                        "primary_rack": "8dwnne",
                        "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                    },
                    "cidr": "192.168.123.0/24",
                    "rdns_mode": 2,
                    "gateway_ip": null,
                    "dns_servers": [],
                    "allow_dns": true,
                    "allow_proxy": true,
                    "active_discovery": false,
                    "managed": true,
                    "id": 4,
                    "space": "undefined",
                    "resource_uri": "/MAAS/api/2.0/subnets/4/"
                },
                "ip_address": "192.168.123.190"
            }
        ],
        "link_speed": 0,
        "name": "ens3",
        "product": null,
        "interface_speed": 0,
        "tags": [],
        "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/interfaces/10/"
    },
    "ip_addresses": [
        "192.168.123.190"
    ],
    "testing_status_name": "Passed",
    "osystem": "ubuntu",
    "bcaches": [],
    "owner": "admin",
    "special_filesystems": [],
    "numanode_set": [
        {
            "index": 0,
            "memory": 985,
            "cores": [
                0
            ]
        }
    ],
    "node_type": 0,
    "cpu_test_status": -1,
    "storage_test_status_name": "Passed",
    "locked": false,
    "disable_ipv4": false,
    "status_message": "Deploying",
    "other_test_status_name": "Unknown",
    "interface_test_status_name": "Unknown",
    "status_name": "Deploying",
    "commissioning_status": 2,
    "hardware_uuid": "F677A842-571C-4E65-ADC9-11E2CF92D363",
    "fqdn": "ace-swan.maas",
    "min_hwe_kernel": "",
    "network_test_status": -1,
    "iscsiblockdevice_set": [],
    "current_testing_result_id": 9,
    "interface_test_status": -1,
    "status_action": "",
    "pool": {
        "name": "default",
        "description": "Default pool",
        "id": 0,
        "resource_uri": "/MAAS/api/2.0/resourcepool/0/"
    },
    "netboot": true,
    "distro_series": "bionic",
    "current_installation_result_id": 10,
    "memory_test_status_name": "Unknown",
    "cpu_count": 1,
    "hwe_kernel": "ga-18.04",
    "description": "",
    "current_commissioning_result_id": 8,
    "cpu_test_status_name": "Unknown",
    "storage_test_status": 2,
    "hardware_info": {
        "system_vendor": "QEMU",
        "system_product": "Standard PC (i440FX + PIIX, 1996)",
        "system_family": "Unknown",
        "system_version": "pc-i440fx-focal",
        "system_sku": "Unknown",
        "system_serial": "Unknown",
        "cpu_model": "Intel Core Processor (Skylake, IBRS)",
        "mainboard_vendor": "Unknown",
        "mainboard_product": "Unknown",
        "mainboard_serial": "Unknown",
        "mainboard_version": "Unknown",
        "mainboard_firmware_vendor": "SeaBIOS",
        "mainboard_firmware_date": "04/01/2014",
        "mainboard_firmware_version": "1.13.0-1ubuntu1",
        "chassis_vendor": "QEMU",
        "chassis_type": "Other",
        "chassis_serial": "Unknown",
        "chassis_version": "pc-i440fx-focal"
    },
    "bios_boot_method": "pxe",
    "storage": 5368.70912,
    "blockdevice_set": [
        {
            "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
            "size": 5368709120,
            "block_size": 512,
            "tags": [
                "ssd"
            ],
            "numa_node": 0,
            "partition_table_type": "GPT",
            "storage_pool": null,
            "type": "physical",
            "filesystem": null,
            "model": "QEMU HARDDISK",
            "used_size": 5366611968,
            "serial": "QM00001",
            "system_id": "bhxws3",
            "uuid": null,
            "available_size": 0,
            "path": "/dev/disk/by-dname/sda",
            "id": 3,
            "name": "sda",
            "partitions": [
                {
                    "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                    "size": 5360320512,
                    "bootable": false,
                    "tags": [],
                    "path": "/dev/disk/by-dname/sda-part2",
                    "device_id": 3,
                    "type": "partition",
                    "id": 3,
                    "system_id": "bhxws3",
                    "filesystem": {
                        "fstype": "ext4",
                        "label": "root",
                        "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                        "mount_point": "/",
                        "mount_options": null
                    },
                    "used_for": "ext4 formatted filesystem mounted at /",
                    "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
                }
            ],
            "used_for": "GPT partitioned with 1 partition",
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
        }
    ],
    "system_id": "bhxws3",
    "boot_disk": {
        "firmware_version": "2.5+",
        "tags": [
            "ssd"
        ],
        "numa_node": 0,
        "partition_table_type": "GPT",
        "size": 5368709120,
        "storage_pool": null,
        "type": "physical",
        "block_size": 512,
        "filesystem": null,
        "model": "QEMU HARDDISK",
        "used_size": 5366611968,
        "serial": "QM00001",
        "system_id": "bhxws3",
        "uuid": null,
        "available_size": 0,
        "path": "/dev/disk/by-dname/sda",
        "id": 3,
        "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
        "name": "sda",
        "partitions": [
            {
                "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                "size": 5360320512,
                "bootable": false,
                "tags": [],
                "path": "/dev/disk/by-dname/sda-part2",
                "device_id": 3,
                "type": "partition",
                "id": 3,
                "system_id": "bhxws3",
                "filesystem": {
                    "fstype": "ext4",
                    "label": "root",
                    "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                    "mount_point": "/",
                    "mount_options": null
                },
                "used_for": "ext4 formatted filesystem mounted at /",
                "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
            }
        ],
        "used_for": "GPT partitioned with 1 partition",
        "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
    },
    "default_gateways": {
        "ipv4": {
            "gateway_ip": null,
            "link_id": null
        },
        "ipv6": {
            "gateway_ip": null,
            "link_id": null
        }
    },
    "raids": [],
    "cache_sets": [],
    "domain": {
        "authoritative": true,
        "ttl": null,
        "is_default": true,
        "id": 0,
        "name": "maas",
        "resource_record_count": 0,
        "resource_uri": "/MAAS/api/2.0/domains/0/"
    },
    "hostname": "ace-swan",
    "virtualblockdevice_set": [],
    "memory": 1024,
    "owner_data": {},
    "zone": {
        "name": "default",
        "description": "",
        "id": 1,
        "resource_uri": "/MAAS/api/2.0/zones/default/"
    },
    "power_state": "off",
    "status": 9,
    "address_ttl": null,
    "other_test_status": -1,
    "volume_groups": [],
    "power_type": "virsh",
    "pod": null,
    "testing_status": 2,
    "physicalblockdevice_set": [
        {
            "firmware_version": "2.5+",
            "tags": [
                "ssd"
            ],
            "numa_node": 0,
            "partition_table_type": "GPT",
            "size": 5368709120,
            "storage_pool": null,
            "type": "physical",
            "block_size": 512,
            "filesystem": null,
            "model": "QEMU HARDDISK",
            "used_size": 5366611968,
            "serial": "QM00001",
            "system_id": "bhxws3",
            "uuid": null,
            "available_size": 0,
            "path": "/dev/disk/by-dname/sda",
            "id": 3,
            "id_path": "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001",
            "name": "sda",
            "partitions": [
                {
                    "uuid": "8aa1164c-8a91-41d7-92e3-c411634355bb",
                    "size": 5360320512,
                    "bootable": false,
                    "tags": [],
                    "path": "/dev/disk/by-dname/sda-part2",
                    "device_id": 3,
                    "type": "partition",
                    "id": 3,
                    "system_id": "bhxws3",
                    "filesystem": {
                        "fstype": "ext4",
                        "label": "root",
                        "uuid": "68487852-7e38-4605-a84e-d787532fd443",
                        "mount_point": "/",
                        "mount_options": null
                    },
                    "used_for": "ext4 formatted filesystem mounted at /",
                    "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/partition/3"
                }
            ],
            "used_for": "GPT partitioned with 1 partition",
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/blockdevices/3/"
        }
    ],
    "interface_set": [
        {
            "mac_address": "52:54:00:15:36:f2",
            "links": [
                {
                    "id": 15,
                    "mode": "auto",
                    "subnet": {
                        "name": "192.168.123.0/24",
                        "description": "",
                        "vlan": {
                            "vid": 0,
                            "mtu": 1500,
                            "dhcp_on": true,
                            "external_dhcp": null,
                            "relay_vlan": null,
                            "fabric_id": 2,
                            "id": 5003,
                            "fabric": "fabric-2",
                            "secondary_rack": null,
                            "name": "untagged",
                            "space": "undefined",
                            "primary_rack": "8dwnne",
                            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                        },
                        "cidr": "192.168.123.0/24",
                        "rdns_mode": 2,
                        "gateway_ip": null,
                        "dns_servers": [],
                        "allow_dns": true,
                        "allow_proxy": true,
                        "active_discovery": false,
                        "managed": true,
                        "id": 4,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/subnets/4/"
                    }
                }
            ],
            "numa_node": 0,
            "enabled": true,
            "params": "",
            "firmware_version": null,
            "sriov_max_vf": 0,
            "type": "physical",
            "children": [],
            "vendor": "Red Hat, Inc.",
            "system_id": "bhxws3",
            "parents": [],
            "vlan": {
                "vid": 0,
                "mtu": 1500,
                "dhcp_on": true,
                "external_dhcp": null,
                "relay_vlan": null,
                "fabric_id": 2,
                "id": 5003,
                "fabric": "fabric-2",
                "secondary_rack": null,
                "name": "untagged",
                "space": "undefined",
                "primary_rack": "8dwnne",
                "resource_uri": "/MAAS/api/2.0/vlans/5003/"
            },
            "link_connected": true,
            "id": 10,
            "effective_mtu": 1500,
            "discovered": [
                {
                    "subnet": {
                        "name": "192.168.123.0/24",
                        "description": "",
                        "vlan": {
                            "vid": 0,
                            "mtu": 1500,
                            "dhcp_on": true,
                            "external_dhcp": null,
                            "relay_vlan": null,
                            "fabric_id": 2,
                            "id": 5003,
                            "fabric": "fabric-2",
                            "secondary_rack": null,
                            "name": "untagged",
                            "space": "undefined",
                            "primary_rack": "8dwnne",
                            "resource_uri": "/MAAS/api/2.0/vlans/5003/"
                        },
                        "cidr": "192.168.123.0/24",
                        "rdns_mode": 2,
                        "gateway_ip": null,
                        "dns_servers": [],
                        "allow_dns": true,
                        "allow_proxy": true,
                        "active_discovery": false,
                        "managed": true,
                        "id": 4,
                        "space": "undefined",
                        "resource_uri": "/MAAS/api/2.0/subnets/4/"
                    },
                    "ip_address": "192.168.123.190"
                }
            ],
            "link_speed": 0,
            "name": "ens3",
            "product": null,
            "interface_speed": 0,
            "tags": [],
            "resource_uri": "/MAAS/api/2.0/nodes/bhxws3/interfaces/10/"
        }
    ],
    "node_type_name": "Machine",
    "commissioning_status_name": "Passed",
    "network_test_status_name": "Unknown",
    "memory_test_status": -1,
    "swap_size": null,
    "resource_uri": "/MAAS/api/2.0/machines/bhxws3/"
}

Okay, done with that much. If you’ve played along, we’ve installed and configured MAAS, started DHCP, created a machine, commissioned it, acquired it, and deployed it without even touching the UI.

In the next post, we’ll look at ways to use jq to condense and simplify the long JSON returns from the MAAS CLI.

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