200 lines
7.4 KiB
Python
200 lines
7.4 KiB
Python
# Copyright (c) 2019 Red Hat
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import absolute_import
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import collections
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import json
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import typing
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import pytest
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import testtools
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from oslo_log import log
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import tobiko
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from tobiko.openstack import keystone
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from tobiko.openstack import neutron
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from tobiko.openstack import octavia
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from tobiko.openstack import stacks
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from tobiko.shell import sh
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from tobiko.shell import ssh
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LOG = log.getLogger(__name__)
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@keystone.skip_if_missing_service(name='octavia')
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class OctaviaBasicTrafficScenarioTest(testtools.TestCase):
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"""Octavia traffic scenario test.
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Create a load balancer with 2 members that run a server application,
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Create a client that is connected to the load balancer VIP port,
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Generate network traffic from the client to the load balanacer.
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"""
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loadbalancer_stack = tobiko.required_setup_fixture(
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stacks.OctaviaLoadbalancerStackFixture)
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listener_stack = tobiko.required_setup_fixture(
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stacks.OctaviaListenerStackFixture)
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pool_stack = tobiko.required_setup_fixture(
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stacks.OctaviaPoolStackFixture)
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member1_stack = tobiko.required_setup_fixture(
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stacks.OctaviaMemberServerStackFixture)
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member2_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOtherMemberServerStackFixture)
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def setUp(self):
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# pylint: disable=no-member
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super(OctaviaBasicTrafficScenarioTest, self).setUp()
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# Wait for Octavia objects to be active
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LOG.info(f'Waiting for {self.member1_stack.stack_name} and '
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f'{self.member2_stack.stack_name} to be created...')
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self.pool_stack.wait_for_active_members()
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octavia.wait_for_octavia_service(
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loadbalancer_id=self.loadbalancer_stack.loadbalancer_id)
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octavia.wait_for_members_to_be_reachable(
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members=[self.member1_stack, self.member2_stack],
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lb_protocol=self.listener_stack.lb_protocol,
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lb_port=self.listener_stack.lb_port
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)
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@pytest.mark.flaky(reruns=3)
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def test_round_robin_traffic(self):
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for attempt in tobiko.retry(timeout=30.):
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try:
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octavia.check_members_balanced(
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pool_id=self.pool_stack.pool_id,
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ip_address=self.loadbalancer_stack.floating_ip_address,
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lb_algorithm=self.pool_stack.lb_algorithm,
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protocol=self.listener_stack.lb_protocol,
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port=self.listener_stack.lb_port)
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break
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except (octavia.RoundRobinException,
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octavia.TrafficTimeoutError) as e:
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if attempt.is_last:
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raise e
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@neutron.skip_unless_is_ovn()
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@keystone.skip_if_missing_service(name='octavia')
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class OctaviaOVNProviderTrafficTest(testtools.TestCase):
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"""Octavia OVN provider traffic test.
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Create an OVN provider load balancer with 2 members that run a server
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application,
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Create a client that is connected to the load balancer VIP port via FIP,
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Generate network traffic from the client to the load balanacer via ssh.
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"""
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loadbalancer_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOvnProviderLoadbalancerStackFixture)
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listener_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOvnProviderListenerStackFixture)
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pool_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOvnProviderPoolStackFixture)
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member1_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOvnProviderMemberServerStackFixture)
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member2_stack = tobiko.required_setup_fixture(
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stacks.OctaviaOvnProviderOtherMemberServerStackFixture)
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def setUp(self):
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# pylint: disable=no-member
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super(OctaviaOVNProviderTrafficTest, self).setUp()
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# Wait for Octavia objects to be active
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LOG.info(f'Waiting for {self.member1_stack.stack_name} and '
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f'{self.member2_stack.stack_name} to be created...')
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self.pool_stack.wait_for_active_members()
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octavia.wait_for_octavia_service(
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loadbalancer_id=self.loadbalancer_stack.loadbalancer_id)
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def test_ssh_traffic(self):
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"""SSH every member server to get its hostname using a load balancer
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"""
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username: typing.Optional[str] = None
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password: typing.Optional[str] = None
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missing_replies = set()
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for member_stack in [self.member1_stack, self.member2_stack]:
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ssh_client = member_stack.server_stack.ssh_client
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hostname = sh.get_hostname(ssh_client=ssh_client)
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missing_replies.add(hostname)
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if username is None:
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username = member_stack.server_stack.username
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else:
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self.assertEqual(username,
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member_stack.server_stack.username,
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"Not all member servers have the same "
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"username to login with")
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if password is None:
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password = member_stack.server_stack.password
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else:
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self.assertEqual(password,
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member_stack.server_stack.password,
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"Not all member servers have the same "
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"password to login with")
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# Get SSH client to the load balancer virtual IP
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ssh_client = ssh.ssh_client(
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host=self.loadbalancer_stack.floating_ip_address,
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port=self.listener_stack.lb_port,
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username=username,
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password=password)
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replies = []
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for attempt in tobiko.retry(timeout=120.):
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LOG.debug(f"SSH to member server by using the load balancer "
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f"(login='{ssh_client.login}', attempt={attempt})...")
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with ssh_client: # disconnect after every loop
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hostname = sh.ssh_hostname(ssh_client=ssh_client)
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try:
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missing_replies.remove(hostname)
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except KeyError:
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self.assertIn(hostname, replies,
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f"Unexpected hostname reached: {hostname}")
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replies.append(hostname)
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if missing_replies:
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LOG.debug('Reached member server(s):\n'
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f'{pretty_replies(replies)}')
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if attempt.is_last:
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self.fail('Unreached member server(s): '
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f'{missing_replies}')
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else:
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LOG.debug('Waiting for reaching remaining server(s)... '
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f'{missing_replies}')
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else:
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LOG.debug('All member servers reached:\n'
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f'{pretty_replies(replies)}')
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break
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else:
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raise RuntimeError('Broken retry loop')
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def pretty_replies(replies: typing.Iterable[str]):
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return json.dumps(collections.Counter(replies),
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indent=4,
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sort_keys=True)
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