Keystone now has Implied Roles.  What does this mean?  Lets say we define the role Admin to  imply the Member role.  Now, if you assigned someone Admin on a project they are automatically assigned the Member role on that project implicitly.

Let’s test it out:

Since we don’t yet have client or CLI support, we’ll have to make due with curl and jq for now.

This uses the same approach Keystone V3 Examples

#!/bin/sh 
. ~/adminrc

export TOKEN=`curl -si -d @token-request.json -H "Content-type: application/json" $OS_AUTH_URL/auth/tokens | awk '/X-Subject-Token/ {print $2}'`

export ADMIN_ID=`curl -H"X-Auth-Token:$TOKEN" -H "Content-type: application/json" $OS_AUTH_URL/roles?name=admin | jq --raw-output '.roles[] | {id}[]'`

export MEMBER_ID=`curl -H"X-Auth-Token:$TOKEN" -H "Content-type: application/json" $OS_AUTH_URL/roles?name=_member_ | jq --raw-output '.roles[] | {id}[]'`

curl -X PUT -H"X-Auth-Token:$TOKEN" -H "Content-type: application/json" $OS_AUTH_URL/roles/$ADMIN_ID/implies/$MEMBER_ID

curl  -H"X-Auth-Token:$TOKEN" -H "Content-type: application/json" $OS_AUTH_URL/role_inferences 

Now, create a new user and and assign them only the user role.

openstack user create Phred
openstack user show Phred
+-----------+----------------------------------+
| Field     | Value                            |
+-----------+----------------------------------+
| domain_id | default                          |
| enabled   | True                             |
| id        | 117c6f0055a446b19f869313e4cbfb5f |
| name      | Phred                            |
+-----------+----------------------------------+
$ openstack  user set --password-prompt Phred
User Password:
Repeat User Password:
$ openstack project list
+----------------------------------+-------+
| ID                               | Name  |
+----------------------------------+-------+
| fdd0b0dcf45e46398b3f9b22d2ec1ab7 | admin |
+----------------------------------+-------+
$ openstack project list
+----------------------------------+-------+
| ID                               | Name  |
+----------------------------------+-------+
| fdd0b0dcf45e46398b3f9b22d2ec1ab7 | admin |
+----------------------------------+-------+
openstack role add --user 117c6f0055a446b19f869313e4cbfb5f --project fdd0b0dcf45e46398b3f9b22d2ec1ab7 e3b08f3ac45a49b4af77dcabcd640a66

Copy token-request.json and modify the values for the new user.

 curl  -d @token-request-phred.json -H "Content-type: application/json" $OS_AUTH_URL/auth/tokens | jq '.token | {roles}'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1643  100  1098  100   545  14742   7317 --:--:-- --:--:-- --:--:-- 14837
{
  "roles": [
    {
      "id": "9fe2ff9ee4384b1894a90878d3e92bab",
      "name": "_member_"
    },
    {
      "id": "e3b08f3ac45a49b4af77dcabcd640a66",
      "name": "admin"
    }
  ]
}