OpenStack Testing (Tempest) of an existing cloud
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# Copyright 2021 Red Hat, Inc.
# 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
# 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 tempest.common import utils
from tempest.common import waiters
from tempest import config
from tempest.lib import decorators
from tempest.lib import exceptions as lib_exc
from tempest.scenario import manager
CONF = config.CONF
class ComputeProjectQuotaTest(manager.ScenarioTest):
"""The test base class for compute unified limits tests.
Dynamic credentials (unique tenants) are created on a per-class basis, so
we test different quota limits in separate test classes to prevent a quota
limit update in one test class from affecting a test running in another
test class in parallel.
credentials = ['primary', 'system_admin']
force_tenant_isolation = True
def skip_checks(cls):
super(ComputeProjectQuotaTest, cls).skip_checks()
if not CONF.compute_feature_enabled.unified_limits:
raise cls.skipException('Compute unified limits are not enabled.')
def resource_setup(cls):
super(ComputeProjectQuotaTest, cls).resource_setup()
# Figure out and record the nova service id
services = cls.os_system_admin.identity_services_v3_client.\
nova_services = [x for x in services['services']
if x['name'] == 'nova']
cls.nova_service_id = nova_services[0]['id']
# Pre-create quota limits in subclasses and record their IDs so we can
# update them in-place without needing to know which ones have been
# created and in which order.
cls.limit_ids = {}
def _create_limit(cls, name, value):
return cls.os_system_admin.identity_limits_client.create_limit(
CONF.identity.region, cls.nova_service_id,
cls.servers_client.tenant_id, name, value)['limits'][0]['id']
def _update_limit(self, name, value):
self.limit_ids[name], value)
class ServersQuotaTest(ComputeProjectQuotaTest):
def resource_setup(cls):
super(ServersQuotaTest, cls).resource_setup()
cls.limit_ids['servers'] = cls._create_limit(
'servers', 5)
cls.limit_ids['class:VCPU'] = cls._create_limit(
'class:VCPU', 10)
cls.limit_ids['class:MEMORY_MB'] = cls._create_limit(
'class:MEMORY_MB', 25 * 1024)
cls.limit_ids['class:DISK_GB'] = cls._create_limit(
'class:DISK_GB', 10)
except lib_exc.Forbidden:
raise cls.skipException('Target system is not configured with '
'compute unified limits')
def test_server_count_vcpu_memory_disk_quota(self):
# Set a quota on the number of servers for our tenant to one.
self._update_limit('servers', 1)
# Create one server.
first = self.create_server(name='first')
# Second server would put us over quota, so expect failure.
# NOTE: In nova, quota exceeded raises 403 Forbidden.
# Update our limit to two.
self._update_limit('servers', 2)
# Now the same create should succeed.
second = self.create_server(name='second')
# Third server would put us over quota, so expect failure.
# Delete the first server to put us under quota.
waiters.wait_for_server_termination(self.servers_client, first['id'])
# Now the same create should succeed.
third = self.create_server(name='third')
# Set the servers limit back to 10 to test other resources.
self._update_limit('servers', 10)
# Default flavor has: VCPU=1, MEMORY_MB=512, DISK_GB=1
# We are currently using 2 VCPU, set the limit to 2.
self._update_limit('class:VCPU', 2)
# Server create should fail as it would go over quota.
# Delete the second server to put us under quota.
waiters.wait_for_server_termination(self.servers_client, second['id'])
# Same create should now succeed.
fourth = self.create_server(name='fourth')
# We are currently using 2 DISK_GB. Set limit to 1.
self._update_limit('class:DISK_GB', 1)
# Server create should fail because we're already over (new) quota.
# Delete the third server.
waiters.wait_for_server_termination(self.servers_client, third['id'])
# Server create should fail again because it would still put us over
# quota.
# Delete the fourth server.
waiters.wait_for_server_termination(self.servers_client, fourth['id'])
# Server create should succeed now.