def test_host_failure_flow_no_instances_on_host(self, _mock_notify,
_mock_novaclient,
mock_unlock, mock_lock,
mock_enable_disable):
_mock_novaclient.return_value = self.fake_client
self.override_config("evacuate_all_instances", True, "host_failure")
# execute DisableComputeServiceTask
self._test_disable_compute_service(mock_enable_disable)
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(
self.ctxt, self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.instance_host)
# verify progress details
_mock_notify.assert_has_calls([
mock.call("Disabling compute service on host: 'fake-host'"),
mock.call("Disabled compute service on host: 'fake-host'", 1.0),
mock.call('Preparing instances for evacuation'),
mock.call(
"Total instances running on failed host 'fake-host' is 0"
"", 0.3),
mock.call("Total HA Enabled instances count: '0'", 0.6),
mock.call("Total Non-HA Enabled instances count: '0'", 0.7),
mock.call(
"All instances (HA Enabled/Non-HA Enabled) should be "
"considered for evacuation. Total count is: '0'", 0.8),
mock.call(
"Skipped host 'fake-host' recovery as no instances needs"
" to be evacuated", 1.0)
])
def test_host_failure_flow_ignore_error_instances_raise_skip_host_recovery(
self, _mock_notify, _mock_novaclient, mock_unlock, mock_lock,
mock_enable_disable):
self.override_config("ignore_instances_in_error_state", True,
"host_failure")
self.override_config("evacuate_all_instances", False, "host_failure")
_mock_novaclient.return_value = self.fake_client
# create ha_enabled test data
self.fake_client.servers.create(id="1",
host=self.instance_host,
vm_state='error',
ha_enabled=True)
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(
self.ctxt, self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.instance_host)
# verify progress details
_mock_notify.assert_has_calls([
mock.call('Preparing instances for evacuation'),
mock.call(
"Total instances running on failed host 'fake-host' is 1"
"", 0.3),
mock.call(
"Ignoring recovery of HA_Enabled instance '1' as it is "
"in 'error' state.", 0.4),
mock.call("Total HA Enabled instances count: '0'", 0.6),
mock.call(
"Skipped host 'fake-host' recovery as no instances needs"
" to be evacuated", 1.0)
])
def test_host_failure_flow_no_ha_enabled_instances(self, _mock_notify,
_mock_novaclient,
mock_unlock, mock_lock,
mock_enable_disable):
_mock_novaclient.return_value = self.fake_client
# create test data
self.fake_client.servers.create(id="1", host=self.instance_host)
self.fake_client.servers.create(id="2", host=self.instance_host)
# execute DisableComputeServiceTask
self._test_disable_compute_service(mock_enable_disable)
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(
self.ctxt, self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.instance_host)
# verify progress details
_mock_notify.assert_has_calls([
mock.call("Disabling compute service on host: 'fake-host'"),
mock.call("Disabled compute service on host: 'fake-host'", 1.0),
mock.call('Preparing instances for evacuation'),
mock.call(
"Total instances running on failed host 'fake-host' is 2"
"", 0.3),
mock.call("Total HA Enabled instances count: '0'", 0.6),
mock.call(
"Skipped host 'fake-host' recovery as no instances needs"
" to be evacuated", 1.0)
])
def test_host_failure_flow_no_instances_on_host(self, _mock_novaclient):
_mock_novaclient.return_value = self.fake_client
self.override_config("evacuate_all_instances",
True, "host_failure")
# execute DisableComputeServiceTask
self._test_disable_compute_service()
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.ctxt, self.instance_host)
def _test_instance_list(self):
task = host_failure.PrepareHAEnabledInstancesTask(self.novaclient)
instance_list = task.execute(
self.ctxt, self.instance_host)
evacuate_all_instances = CONF.host_failure.evacuate_all_instances
if evacuate_all_instances:
self.assertEqual(len(self.fake_client.servers.list()),
len(instance_list['instance_list']))
else:
for instance in instance_list['instance_list']:
self.assertTrue(instance.metadata.get('HA_Enabled', False))
return instance_list
def test_host_failure_flow_no_ha_enabled_instances(self, _mock_novaclient):
_mock_novaclient.return_value = self.fake_client
# create test data
self.fake_client.servers.create(id="1", host=self.instance_host)
self.fake_client.servers.create(id="2", host=self.instance_host)
# execute DisableComputeServiceTask
self._test_disable_compute_service()
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.ctxt, self.instance_host)
def _test_instance_list(self, instances_evacuation_count):
task = host_failure.PrepareHAEnabledInstancesTask(self.novaclient)
instance_list = task.execute(self.ctxt, self.instance_host)
for instance in instance_list['instance_list']:
if CONF.host_failure.ignore_instances_in_error_state:
self.assertNotEqual("error",
getattr(instance, "OS-EXT-STS:vm_state"))
if not CONF.host_failure.evacuate_all_instances:
self.assertTrue(instance.metadata.get('HA_Enabled', False))
self.assertEqual(instances_evacuation_count,
len(instance_list['instance_list']))
return instance_list
def test_host_failure_flow_ignore_error_instances_raise_skip_host_recovery(
self, _mock_novaclient, mock_unlock, mock_lock,
mock_enable_disable):
self.override_config("ignore_instances_in_error_state", True,
"host_failure")
self.override_config("evacuate_all_instances", False, "host_failure")
_mock_novaclient.return_value = self.fake_client
# create ha_enabled test data
self.fake_client.servers.create(id="1",
host=self.instance_host,
vm_state='error',
ha_enabled=True)
# execute PrepareHAEnabledInstancesTask
task = host_failure.PrepareHAEnabledInstancesTask(self.novaclient)
self.assertRaises(exception.SkipHostRecoveryException, task.execute,
self.ctxt, self.instance_host)
def _test_instance_list(self, instances_evacuation_count):
task = host_failure.PrepareHAEnabledInstancesTask(
self.ctxt, self.novaclient)
instances = task.execute(self.instance_host)
instance_uuid_list = []
for instance_id in instances['instance_list']:
instance = self.novaclient.get_server(self.ctxt, instance_id)
if CONF.host_failure.ignore_instances_in_error_state:
self.assertNotEqual("error",
getattr(instance, "OS-EXT-STS:vm_state"))
if not CONF.host_failure.evacuate_all_instances:
ha_enabled_key = (
CONF.host_failure.ha_enabled_instance_metadata_key)
self.assertTrue(instance.metadata.get(ha_enabled_key, False))
instance_uuid_list.append(instance.id)
self.assertEqual(instances_evacuation_count,
len(instances['instance_list']))
return {
"instance_list": instance_uuid_list,
}
