Creation of DNSRecord marks an IP address as "User reserved" leading to impossibility to use this IP later

[Vladimir Grevtsev]

tl;dr I want to pre-create the hostname for my service which is going to be deployed later with Juju; but it's IP address is marked as "User reserved" in MAAS - so this addr will never be picked up by Juju.

$ maas admin dnsresources create name='ns1-devci' domain='maas' ip_addresses='172.27.86.220'
Success.
Machine-readable output follows:
{
    "address_ttl": null,
    "id": 12,
    "fqdn": "ns1-devci.maas",
    "ip_addresses": [
        {
            "created": "2020-09-18T08:06:31.199",
            "ip": "172.27.86.220",
            "alloc_type": 4,
            "subnet": {
                "name": "external",
                "description": "",
                "vlan": {
                    "vid": 2,
                    "mtu": 1500,
                    "dhcp_on": false,
                    "external_dhcp": null,
                    "relay_vlan": null,
                    "id": 5002,
                    "space": "external-space",
                    "primary_rack": null,
                    "secondary_rack": null,
                    "fabric": "default",
                    "fabric_id": 4,
                    "name": "untagged",
                    "resource_uri": "/MAAS/api/2.0/vlans/5002/"
                },
                "cidr": "172.27.86.0/23",
                "rdns_mode": 2,
                "gateway_ip": "172.27.87.254",
                "dns_servers": [],
                "allow_dns": true,
                "allow_proxy": true,
                "active_discovery": false,
                "managed": true,
                "id": 5,
                "space": "external-space",
                "resource_uri": "/MAAS/api/2.0/subnets/5/"
            },
            "interface_set": [],
            "alloc_type_name": "User reserved",
            "owner": {
                "is_superuser": true,
                "username": "admin",
                "email": "root@localhost",
                "is_local": true,
                "resource_uri": "/MAAS/api/2.0/users/admin/"
            },
            "resource_uri": "/MAAS/api/2.0/ipaddresses/"
        }
    ],
    "resource_records": [],
    "resource_uri": "/MAAS/api/2.0/dnsresources/12/"
}

Moreover, it will not be unblocked even after I will delete the RR above.

tl;dr I want to pre-create the hostname for my service which is going to be deployed later with Juju; but it's IP address is marked as "User reserved" in MAAS - so this addr will never be picked up by Juju.

$ maas admin dnsresources create name='ns1-devci' domain='maas' ip_addresses='172.27.86.220'
Success.
Machine-readable output follows:
{
    "address_ttl": null,
    "id": 12,
    "fqdn": "ns1-devci.maas",
    "ip_addresses": [
        {
            "created": "2020-09-18T08:06:31.199",
            "ip": "172.27.86.220",
            "alloc_type": 4,
            "subnet": {
                "name": "external",
                "description": "",
                "vlan": {
                    "vid": 2,
                    "mtu": 1500,
                    "dhcp_on": false,
                    "external_dhcp": null,
                    "relay_vlan": null,
                    "id": 5002,
                    "space": "external-space",
                    "primary_rack": null,
                    "secondary_rack": null,
                    "fabric": "default",
                    "fabric_id": 4,
                    "name": "untagged",
                    "resource_uri": "/MAAS/api/2.0/vlans/5002/"
                },
                "cidr": "172.27.86.0/23",
                "rdns_mode": 2,
                "gateway_ip": "172.27.87.254",
                "dns_servers": [],
                "allow_dns": true,
                "allow_proxy": true,
                "active_discovery": false,
                "managed": true,
                "id": 5,
                "space": "external-space",
                "resource_uri": "/MAAS/api/2.0/subnets/5/"
            },
            "interface_set": [],
            "alloc_type_name": "User reserved",
            "owner": {
                "is_superuser": true,
                "username": "admin",
                "email": "root@localhost",
                "is_local": true,
                "resource_uri": "/MAAS/api/2.0/users/admin/"
            },
            "resource_uri": "/MAAS/api/2.0/ipaddresses/"
        }
    ],
    "resource_records": [],
    "resource_uri": "/MAAS/api/2.0/dnsresources/12/"
}

Moreover, it will not be unblocked even after I will delete the RR above.

MAAS 2.8.2 (8577-g.a3e674063-0ubuntu1~18.04.1)

[Alberto Donato (ack)]

Since the IP is reserved in MAAS, it's not deleted automatically after removing the DNS record.

You can release it with:

maas admin ipaddresses release ip=172.27.86.220

Currently, you can't use reserved address to assign it to a machine. Reserving them is mostly meant as a way to ensure MAAS doesn't hand those out.

[Launchpad Janitor (janitor)]

[Expired for MAAS because there has been no activity for 60 days.]