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diff --git a/playbooks/openstack/inventory.py b/playbooks/openstack/inventory.py
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+#!/usr/bin/env python
+"""
+This is an Ansible dynamic inventory for OpenStack.
+
+It requires your OpenStack credentials to be set in clouds.yaml or your shell
+environment.
+
+"""
+
+from __future__ import print_function
+
+from collections import Mapping
+import json
+
+import shade
+
+
+def build_inventory():
+ '''Build the dynamic inventory.'''
+ cloud = shade.openstack_cloud()
+
+ inventory = {}
+
+ # TODO(shadower): filter the servers based on the `OPENSHIFT_CLUSTER`
+ # environment variable.
+ cluster_hosts = [
+ server for server in cloud.list_servers()
+ if 'metadata' in server and 'clusterid' in server.metadata]
+
+ masters = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'master']
+
+ etcd = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'etcd']
+ if not etcd:
+ etcd = masters
+
+ infra_hosts = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'node' and
+ server.metadata['sub-host-type'] == 'infra']
+
+ app = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'node' and
+ server.metadata['sub-host-type'] == 'app']
+
+ cns = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'cns']
+
+ nodes = list(set(masters + infra_hosts + app + cns))
+
+ dns = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'dns']
+
+ load_balancers = [server.name for server in cluster_hosts
+ if server.metadata['host-type'] == 'lb']
+
+ osev3 = list(set(nodes + etcd + load_balancers))
+
+ inventory['cluster_hosts'] = {'hosts': [s.name for s in cluster_hosts]}
+ inventory['OSEv3'] = {'hosts': osev3}
+ inventory['masters'] = {'hosts': masters}
+ inventory['etcd'] = {'hosts': etcd}
+ inventory['nodes'] = {'hosts': nodes}
+ inventory['infra_hosts'] = {'hosts': infra_hosts}
+ inventory['app'] = {'hosts': app}
+ inventory['glusterfs'] = {'hosts': cns}
+ inventory['dns'] = {'hosts': dns}
+ inventory['lb'] = {'hosts': load_balancers}
+
+ for server in cluster_hosts:
+ if 'group' in server.metadata:
+ group = server.metadata.group
+ if group not in inventory:
+ inventory[group] = {'hosts': []}
+ inventory[group]['hosts'].append(server.name)
+
+ inventory['_meta'] = {'hostvars': {}}
+
+ for server in cluster_hosts:
+ ssh_ip_address = server.public_v4 or server.private_v4
+ hostvars = {
+ 'ansible_host': ssh_ip_address
+ }
+
+ public_v4 = server.public_v4 or server.private_v4
+ if public_v4:
+ hostvars['public_v4'] = server.public_v4
+ hostvars['openshift_public_ip'] = server.public_v4
+ # TODO(shadower): what about multiple networks?
+ if server.private_v4:
+ hostvars['private_v4'] = server.private_v4
+ hostvars['openshift_ip'] = server.private_v4
+
+ # NOTE(shadower): Yes, we set both hostname and IP to the private
+ # IP address for each node. OpenStack doesn't resolve nodes by
+ # name at all, so using a hostname here would require an internal
+ # DNS which would complicate the setup and potentially introduce
+ # performance issues.
+ hostvars['openshift_hostname'] = server.metadata.get(
+ 'openshift_hostname', server.private_v4)
+ hostvars['openshift_public_hostname'] = server.name
+
+ if server.metadata['host-type'] == 'cns':
+ hostvars['glusterfs_devices'] = ['/dev/nvme0n1']
+
+ node_labels = server.metadata.get('node_labels')
+ # NOTE(shadower): the node_labels value must be a dict not string
+ if not isinstance(node_labels, Mapping):
+ node_labels = json.loads(node_labels)
+
+ if node_labels:
+ hostvars['openshift_node_labels'] = node_labels
+
+ inventory['_meta']['hostvars'][server.name] = hostvars
+ return inventory
+
+
+if __name__ == '__main__':
+ print(json.dumps(build_inventory(), indent=4, sort_keys=True))