Merge "add test to ensure cloud is using minimum number of nodes"

tempest/config.py

@@ -330,7 +330,13 @@ ComputeGroup = [
                help='Unallocated floating IP range, which will be used to '
                     'test the floating IP bulk feature for CRUD operation. '
                     'This block must not overlap an existing floating IP '
-                    'pool.')
+                    'pool.'),
+    cfg.IntOpt('min_compute_nodes',
+               default=1,
+               help=('The minimum number of compute nodes expected. This will '
+                     'be utilized by some multinode specific tests to ensure '
+                     'that requests match the expected size of the cluster '
+                     'you are testing with.'))
 ]
 
 compute_features_group = cfg.OptGroup(name='compute-feature-enabled',

tempest/scenario/test_server_multinode.py

@@ -0,0 +1,78 @@
+# Copyright 2012 OpenStack Foundation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+
+from oslo_log import log as logging
+
+from tempest import config
+from tempest import exceptions
+from tempest.scenario import manager
+from tempest import test
+
+CONF = config.CONF
+
+LOG = logging.getLogger(__name__)
+
+
+class TestServerMultinode(manager.ScenarioTest):
+
+    """
+    This is a set of tests specific to multinode testing.
+
+    """
+    credentials = ['primary', 'admin']
+
+    @test.idempotent_id('9cecbe35-b9d4-48da-a37e-7ce70aa43d30')
+    @test.attr(type='smoke')
+    @test.services('compute', 'network')
+    def test_schedule_to_all_nodes(self):
+        host_client = self.admin_manager.hosts_client
+        hosts = host_client.list_hosts()['hosts']
+        hosts = [x for x in hosts if x['service'] == 'compute']
+
+        # ensure we have at least as many compute hosts as we expect
+        if len(hosts) < CONF.compute.min_compute_nodes:
+            raise exceptions.InvalidConfiguration(
+                "Host list %s is shorter than min_compute_nodes. "
+                "Did a compute worker not boot correctly?" % hosts)
+
+        # create 1 compute for each node, up to the min_compute_nodes
+        # threshold (so that things don't get crazy if you have 1000
+        # compute nodes but set min to 3).
+        servers = []
+
+        for host in hosts[:CONF.compute.min_compute_nodes]:
+            create_kwargs = {
+                'scheduler_hints': {'force_hosts': host['host_name']}
+            }
+
+            # by getting to active state here, this means this has
+            # landed on the host in question.
+            inst = self.create_server(image=CONF.compute.image_ref,
+                                      flavor=CONF.compute.flavor_ref,
+                                      create_kwargs=create_kwargs)
+            server = self.servers_client.show_server(inst['id'])['server']
+            servers.append(server)
+
+        # make sure we really have the number of servers we think we should
+        self.assertEqual(
+            len(servers), CONF.compute.min_compute_nodes,
+            "Incorrect number of servers built %s" % servers)
+
+        # ensure that every server ended up on a different host
+        host_ids = [x['hostId'] for x in servers]
+        self.assertEqual(
+            len(set(host_ids)), len(servers),
+            "Incorrect number of distinct host_ids scheduled to %s" % servers)