[2.4-rc2] cannot match subnets to zones: cannot use space <space> as deployment target: no subnets

[Dmitrii Shcherbakov]

tl;dr: after updating a vlan:space association from untagged:undefined to untagged:lab and doing reload-spaces a subnet associated with that space by being in the untagged subnet is not considered to be related to that space.

MAAS version: 2.4.0 (6981-g011e51b7a-0ubuntu1~18.04.1)

juju status -m admin/controller
Model Controller Cloud/Region Version SLA
controller vmaas vmaas 2.4-rc2 unsupported
Machine State DNS Inst id Series AZ Message
0 started 10.10.101.7 xwqr38 xenial default Deployed

juju models
Controller: vmaas

Model Cloud/Region Status Machines Cores Access Last connection
admin/controller vmaas available 1 2 admin just now
admin/default* vmaas available 7 6 admin 1 minute ago

juju spaces
Space Subnets
undefined 10.10.101.0/24

# moved an "untagged" vlan to a new space instead of using the "(undefined)" one
# MAAS:
Fabric VLAN DHCP Subnet Available IPs Space
fabric-0 untagged Enabled 10.10.101.0/24 56% lab

# hmm, the subnet seems to be still associated with the undefined space
juju spaces
Space Subnets
lab
undefined 10.10.101.0/24

grep -A1 bindings bundle.yaml
    bindings:
      "": *lab-space
--
    bindings:
      "": *lab-space
--
    bindings:
      "": *lab-space
--
    bindings:
      "": *lab-space
--
    bindings:
      "": *lab-space
--
    bindings:
      "": *lab-space

 juju deploy bundle.yaml

# errors all over the place
juju status
Model Controller Cloud/Region Version SLA
default vmaas vmaas 2.4-rc2 unsupported

App Version Status Scale Charm Store Rev OS Notes
keystone error 1 keystone jujucharms 281 ubuntu
keystone-saml-mellon waiting 0 keystone-saml-mellon local 1 ubuntu
mysql 5.6.37-26.21 error 1 percona-cluster jujucharms 266 ubuntu
neutron-api waiting 0/1 neutron-api jujucharms 260 ubuntu
nova-cloud-controller waiting 0/1 nova-cloud-controller jujucharms 310 ubuntu
openstack-dashboard waiting 0/1 openstack-dashboard local 32 ubuntu
rabbitmq-server waiting 0/1 rabbitmq-server jujucharms 74 ubuntu

Unit Workload Agent Machine Public address Ports Message
keystone/0* error idle 0 10.10.101.8 hook failed: "install"
mysql/0* error idle 1 10.10.101.9 hook failed: "config-changed"
neutron-api/0 waiting allocating 1/lxd/0 waiting for machine
nova-cloud-controller/0 waiting allocating 1/lxd/1 waiting for machine
openstack-dashboard/0 waiting allocating 2/lxd/0 waiting for machine
rabbitmq-server/0 waiting allocating 1/lxd/2 waiting for machine

Machine State DNS Inst id Series AZ Message
0 started 10.10.101.8 eshpkk xenial default Deployed
1 started 10.10.101.9 mddw47 xenial default Deployed
1/lxd/0 down pending xenial cannot match subnets to zones: cannot use space "lab" as deployment target: no subnets
1/lxd/1 down pending xenial cannot match subnets to zones: cannot use space "lab" as deployment target: no subnets
1/lxd/2 down pending xenial cannot match subnets to zones: cannot use space "lab" as deployment target: no subnets
2 started 10.10.101.10 qawdec xenial default Deployed
2/lxd/0 down pending xenial cannot match subnets to zones: cannot use space "lab" as deployment target: no subnets

[John A Meinel (jameinel)]

we don't currently support detecting that subnets have moved spaces, but this is certainly a known bug w/ reload-spaces.