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# -*- encoding: utf-8 -*-
#
#
# 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
from tempest import config
from tempest.lib import decorators
from watcher_tempest_plugin.tests.scenario import base
CONF = config.CONF
LOG = log.getLogger(__name__)
class TestExecuteWorkloadBalanceStrategy(base.BaseInfraOptimScenarioTest):
"""Tests for workload_balance"""
# Minimal version required for list data models
min_microversion = "1.3"
# Minimal version required for _create_one_instance_per_host
compute_min_microversion = base.NOVA_API_VERSION_CREATE_WITH_HOST
GOAL = "workload_balancing"
STRATEGY = "workload_balance"
@classmethod
def skip_checks(cls):
super().skip_checks()
if CONF.compute.min_compute_nodes < 2:
raise cls.skipException(
"Less than 2 compute nodes, skipping multinode tests.")
if not CONF.compute_feature_enabled.live_migration:
raise cls.skipException("Live migration is not enabled")
@decorators.attr(type=['strategy', 'workload_balance'])
@decorators.idempotent_id('64a9293f-0f81-431c-afae-ecabebae53f1')
def test_execute_workload_balance_strategy_cpu(self):
# This test requires metrics injection
self.check_min_enabled_compute_nodes(2)
self.addCleanup(self.wait_delete_instances_from_model)
self.addCleanup(self.clean_injected_metrics)
host = self.get_enabled_compute_nodes()[0]['host']
hypervisor = self.get_hypervisor_details(host)
instances = []
created_instances = 2
for _ in range(created_instances):
instance = self._create_instance(host)
instances.append(instance)
# wait for compute model updates
self.wait_for_instances_in_model(instances)
for instance in instances:
# Inject metrics after the instances are created
self.make_instance_statistic(instance)
# Set a threshold for CPU usage
# ( <number of vms> - 0.5 ) * (0.8/<vcpus of the compute host>)*100
threshold = round(
(created_instances - 0.5) * (0.8 / int(hypervisor['vcpus'])) * 100)
audit_parameters = {
"metrics": "instance_cpu_usage",
"threshold": threshold,
"period": 300,
"granularity": 300}
audit_kwargs = {"parameters": audit_parameters}
audit_template = self.create_audit_template_for_strategy()
audit = self.create_audit_and_wait(
audit_template['uuid'], **audit_kwargs)
action_plan, _ = self.get_action_plan_and_validate_actions(
audit['uuid'], ['migrate'])
self.assertEqual("RECOMMENDED", action_plan['state'])
self.execute_action_plan_and_validate_states(action_plan['uuid'])
@decorators.attr(type=['strategy', 'workload_balance'])
@decorators.idempotent_id('de4f662a-26b1-4cbe-ba8e-c213bac0a996')
def test_execute_workload_balance_strategy_ram(self):
# This test requires metrics injection
self.check_min_enabled_compute_nodes(2)
self.addCleanup(self.wait_delete_instances_from_model)
self.addCleanup(self.clean_injected_metrics)
host = self.get_enabled_compute_nodes()[0]['host']
hypervisor = self.get_hypervisor_details(host)
# Flavor RAM is set to 15% of the hypervisor memory
ram = int(hypervisor['memory_mb'] * 0.15)
flavor_id = self._create_custom_flavor(ram=ram)
instances = []
for _ in range(2):
instance = self._create_instance(host=host, flavor=flavor_id)
instances.append(instance)
# wait for compute model updates
self.wait_for_instances_in_model(instances)
for instance in instances:
# Inject metrics after the instances are created
self.make_instance_statistic(instance)
audit_parameters = {
"metrics": "instance_ram_usage",
"threshold": 18,
"period": 300,
"granularity": 300}
audit_kwargs = {"parameters": audit_parameters}
audit_template = self.create_audit_template_for_strategy()
audit = self.create_audit_and_wait(
audit_template['uuid'], **audit_kwargs)
action_plan, _ = self.get_action_plan_and_validate_actions(
audit['uuid'], ['migrate'])
self.assertEqual("RECOMMENDED", action_plan['state'])
self.execute_action_plan_and_validate_states(action_plan['uuid'])
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