Charm Interface - Keystone Admin
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keystone-admin interface

Use this interface to use keystone credentials in your charm layers.


By relating you charm layer (keystone-admin:identity-admin) with keystone service, keystone’s API endpoint as well as username, password and region name will be shared.

How to use in your layers

The event handler for identity-admin.connected is called when a relation is established between your charm layer and keystone.

In case there are no unset shared data (ie: service_password), a new event handler will be set: identity-admin.available.

This object provides a method,


returing a dict of:

        {u'service_password': u'XXXXXXXX',
         u'service_port': u'5000',
         u'service_hostname': u'10.XX.XX.XXX',
         u'service_username': u'admin',
         u'service_tenant_name': u'Admin',
         u'service_region': u'RegionOne'}


    interface: keystone-admin


includes: ['layer:basic', 'interface:keystone-admin']

charm layer example,

def setup_openstack_plugin(kst_data):
    creds = kst_data.credentials()
    if data_changed('identity-admin.config', creds):
        settings = {'keystone_vip': creds['service_hostname'],
                    'keystone_port': creds['service_port'],
                    'username': creds['service_username'],
                    'password': creds['service_password'],
                    'tenant_name': creds['service_tenant_name'],

Example deployment

$ juju deploy your-awesome-charm
$ juju deploy keystone --config keystone-creds.yaml
$ juju deploy mysql
$ juju add-relation keystone mysql
$ juju add-relation your-awesome-charm keystone

where keystone-creds.yaml has the necessary configuration settings for your awesome charm to connect to keystone.