nova: admin not allowed to start an instance about coa HOT 3 CLOSED

Finally it is much trivial that that:

I am using a flavor with 20 GB space
openstack flavor list

+----+-----------+-------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+-----------+-------+------+-----------+-------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | 1 | True |
| 2 | m1.small | 2048 | 20 | 0 | 1 | True |
| 3 | m1.medium | 4096 | 40 | 0 | 2 | True |
| 4 | m1.large | 8192 | 80 | 0 | 4 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | 8 | True |
+----+-----------+-------+------+-----------+-------+-----------+

But there is no such free space available:
df -h

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 18G 3.9G 14G 22% /
devtmpfs 2.9G 0 2.9G 0% /dev
tmpfs 2.9G 4.0K 2.9G 1% /dev/shm
tmpfs 2.9G 17M 2.9G 1% /run
tmpfs 2.9G 0 2.9G 0% /sys/fs/cgroup
/dev/loop0 1.9G 6.1M 1.7G 1% /srv/node/swiftloopback
/dev/sda1 497M 217M 280M 44% /boot
tmpfs 584M 0 584M 0% /run/user/1000

It is worth mentioning that I am using Openstack RDO with default centos disk space allocation of 20GB

from coa.

Looks like resource-related:

from coa.

Possible direction of thought:
http://stackoverflow.com/questions/36714062/how-to-resolve-error-you-are-not-allowed-to-start-instance-instance-name-wi

Knowing that this is a modified Openstack RDO AIO for multidomain support and the policy.json policy file is indeed relpaced by https://github.com/openstack/keystone/blob/master/etc/policy.v3cloudsample.json

from coa.