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# Copyright 2012 OpenStack Foundation
# Copyright 2013 Hewlett-Packard Development Company, L.P.
# 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.
import collections
import re
import testtools
from tempest.common import debug
from tempest.common.utils import data_utils
from tempest import config
from tempest import exceptions
from tempest.openstack.common import log as logging
from tempest.scenario import manager
from tempest.services.network import resources as net_resources
from tempest import test
CONF = config.CONF
LOG = logging.getLogger(__name__)
Floating_IP_tuple = collections.namedtuple('Floating_IP_tuple',
['floating_ip', 'server'])
class TestNetworkBasicOps(manager.NetworkScenarioTest):
"""
This smoke test suite assumes that Nova has been configured to
boot VM's with Neutron-managed networking, and attempts to
verify network connectivity as follows:
There are presumed to be two types of networks: tenant and
public. A tenant network may or may not be reachable from the
Tempest host. A public network is assumed to be reachable from
the Tempest host, and it should be possible to associate a public
('floating') IP address with a tenant ('fixed') IP address to
facilitate external connectivity to a potentially unroutable
tenant IP address.
This test suite can be configured to test network connectivity to
a VM via a tenant network, a public network, or both. If both
networking types are to be evaluated, tests that need to be
executed remotely on the VM (via ssh) will only be run against
one of the networks (to minimize test execution time).
Determine which types of networks to test as follows:
* Configure tenant network checks (via the
'tenant_networks_reachable' key) if the Tempest host should
have direct connectivity to tenant networks. This is likely to
be the case if Tempest is running on the same host as a
single-node devstack installation with IP namespaces disabled.
* Configure checks for a public network if a public network has
been configured prior to the test suite being run and if the
Tempest host should have connectivity to that public network.
Checking connectivity for a public network requires that a
value be provided for 'public_network_id'. A value can
optionally be provided for 'public_router_id' if tenants will
use a shared router to access a public network (as is likely to
be the case when IP namespaces are not enabled). If a value is
not provided for 'public_router_id', a router will be created
for each tenant and use the network identified by
'public_network_id' as its gateway.
"""
@classmethod
def check_preconditions(cls):
super(TestNetworkBasicOps, cls).check_preconditions()
if not (CONF.network.tenant_networks_reachable
or CONF.network.public_network_id):
msg = ('Either tenant_networks_reachable must be "true", or '
'public_network_id must be defined.')
cls.enabled = False
raise cls.skipException(msg)
@classmethod
def resource_setup(cls):
# Create no network resources for these tests.
cls.set_network_resources()
super(TestNetworkBasicOps, cls).resource_setup()
for ext in ['router', 'security-group']:
if not test.is_extension_enabled(ext, 'network'):
msg = "%s extension not enabled." % ext
raise cls.skipException(msg)
def setUp(self):
super(TestNetworkBasicOps, self).setUp()
self.keypairs = {}
self.servers = []
def _setup_network_and_servers(self):
self.security_group = \
self._create_security_group(tenant_id=self.tenant_id)
self.network, self.subnet, self.router = self.create_networks()
self.check_networks()
name = data_utils.rand_name('server-smoke')
server = self._create_server(name, self.network)
self._check_tenant_network_connectivity()
self._create_and_associate_floating_ips(server)
def check_networks(self):
"""
Checks that we see the newly created network/subnet/router via
checking the result of list_[networks,routers,subnets]
"""
seen_nets = self._list_networks()
seen_names = [n['name'] for n in seen_nets]
seen_ids = [n['id'] for n in seen_nets]
self.assertIn(self.network.name, seen_names)
self.assertIn(self.network.id, seen_ids)
if self.subnet:
seen_subnets = self._list_subnets()
seen_net_ids = [n['network_id'] for n in seen_subnets]
seen_subnet_ids = [n['id'] for n in seen_subnets]
self.assertIn(self.network.id, seen_net_ids)
self.assertIn(self.subnet.id, seen_subnet_ids)
if self.router:
seen_routers = self._list_routers()
seen_router_ids = [n['id'] for n in seen_routers]
seen_router_names = [n['name'] for n in seen_routers]
self.assertIn(self.router.name,
seen_router_names)
self.assertIn(self.router.id,
seen_router_ids)
def _create_server(self, name, network):
keypair = self.create_keypair()
self.keypairs[keypair['name']] = keypair
security_groups = [self.security_group]
create_kwargs = {
'networks': [
{'uuid': network.id},
],
'key_name': keypair['name'],
'security_groups': security_groups,
}
server = self.create_server(name=name, create_kwargs=create_kwargs)
self.servers.append(server)
return server
def _get_server_key(self, server):
return self.keypairs[server['key_name']]['private_key']
def _check_tenant_network_connectivity(self):
ssh_login = CONF.compute.image_ssh_user
for server in self.servers:
# call the common method in the parent class
super(TestNetworkBasicOps, self).\
_check_tenant_network_connectivity(
server, ssh_login, self._get_server_key(server),
servers_for_debug=self.servers)
def _create_and_associate_floating_ips(self, server):
public_network_id = CONF.network.public_network_id
floating_ip = self._create_floating_ip(server, public_network_id)
self.floating_ip_tuple = Floating_IP_tuple(floating_ip, server)
def _check_public_network_connectivity(self, should_connect=True,
msg=None):
"""Verifies connectivty to a VM via public network and floating IP,
and verifies floating IP has resource status is correct.
Floating IP status is verified after connectivity test in order to
not add extra waiting and mask racing conditions.
:param should_connect: bool. determines if connectivity check is
negative or positive.
:param msg: Failure message to add to Error message. Should describe
the place in the test scenario where the method was called,
to indicate the context of the failure
"""
ssh_login = CONF.compute.image_ssh_user
floating_ip, server = self.floating_ip_tuple
ip_address = floating_ip.floating_ip_address
private_key = None
floatingip_status = 'DOWN'
if should_connect:
private_key = self._get_server_key(server)
floatingip_status = 'ACTIVE'
# call the common method in the parent class
super(TestNetworkBasicOps, self)._check_public_network_connectivity(
ip_address, ssh_login, private_key, should_connect, msg,
self.servers)
self.check_floating_ip_status(floating_ip, floatingip_status)
def _disassociate_floating_ips(self):
floating_ip, server = self.floating_ip_tuple
self._disassociate_floating_ip(floating_ip)
self.floating_ip_tuple = Floating_IP_tuple(
floating_ip, None)
def _reassociate_floating_ips(self):
floating_ip, server = self.floating_ip_tuple
name = data_utils.rand_name('new_server-smoke-')
# create a new server for the floating ip
server = self._create_server(name, self.network)
self._associate_floating_ip(floating_ip, server)
self.floating_ip_tuple = Floating_IP_tuple(
floating_ip, server)
def _create_new_network(self):
self.new_net = self._create_network(tenant_id=self.tenant_id)
self.new_subnet = self._create_subnet(
network=self.new_net,
gateway_ip=None)
def _hotplug_server(self):
old_floating_ip, server = self.floating_ip_tuple
ip_address = old_floating_ip.floating_ip_address
private_key = self._get_server_key(server)
ssh_client = self.get_remote_client(ip_address,
private_key=private_key)
old_nic_list = self._get_server_nics(ssh_client)
# get a port from a list of one item
port_list = self._list_ports(device_id=server['id'])
self.assertEqual(1, len(port_list))
old_port = port_list[0]
_, interface = self.interface_client.create_interface(
server=server['id'],
network_id=self.new_net.id)
self.addCleanup(self.network_client.wait_for_resource_deletion,
'port',
interface['port_id'])
self.addCleanup(self.delete_wrapper,
self.interface_client.delete_interface,
server['id'], interface['port_id'])
def check_ports():
self.new_port_list = [port for port in
self._list_ports(device_id=server['id'])
if port != old_port]
return len(self.new_port_list) == 1
if not test.call_until_true(check_ports, CONF.network.build_timeout,
CONF.network.build_interval):
raise exceptions.TimeoutException("No new port attached to the "
"server in time (%s sec) !"
% CONF.network.build_timeout)
new_port = net_resources.DeletablePort(client=self.network_client,
**self.new_port_list[0])
def check_new_nic():
new_nic_list = self._get_server_nics(ssh_client)
self.diff_list = [n for n in new_nic_list if n not in old_nic_list]
return len(self.diff_list) == 1
if not test.call_until_true(check_new_nic, CONF.network.build_timeout,
CONF.network.build_interval):
raise exceptions.TimeoutException("Interface not visible on the "
"guest after %s sec"
% CONF.network.build_timeout)
num, new_nic = self.diff_list[0]
ssh_client.assign_static_ip(nic=new_nic,
addr=new_port.fixed_ips[0]['ip_address'])
ssh_client.turn_nic_on(nic=new_nic)
def _get_server_nics(self, ssh_client):
reg = re.compile(r'(?P<num>\d+): (?P<nic_name>\w+):')
ipatxt = ssh_client.get_ip_list()
return reg.findall(ipatxt)
def _check_network_internal_connectivity(self, network):
"""
via ssh check VM internal connectivity:
- ping internal gateway and DHCP port, implying in-tenant connectivity
pinging both, because L3 and DHCP agents might be on different nodes
"""
floating_ip, server = self.floating_ip_tuple
# get internal ports' ips:
# get all network ports in the new network
internal_ips = (p['fixed_ips'][0]['ip_address'] for p in
self._list_ports(tenant_id=server['tenant_id'],
network_id=network.id)
if p['device_owner'].startswith('network'))
self._check_server_connectivity(floating_ip, internal_ips)
def _check_network_external_connectivity(self):
"""
ping public network default gateway to imply external connectivity
"""
if not CONF.network.public_network_id:
msg = 'public network not defined.'
LOG.info(msg)
return
subnet = self._list_subnets(
network_id=CONF.network.public_network_id)
self.assertEqual(1, len(subnet), "Found %d subnets" % len(subnet))
external_ips = [subnet[0]['gateway_ip']]
self._check_server_connectivity(self.floating_ip_tuple.floating_ip,
external_ips)
def _check_server_connectivity(self, floating_ip, address_list):
ip_address = floating_ip.floating_ip_address
private_key = self._get_server_key(self.floating_ip_tuple.server)
ssh_source = self._ssh_to_server(ip_address, private_key)
for remote_ip in address_list:
try:
self.assertTrue(self._check_remote_connectivity(ssh_source,
remote_ip),
"Timed out waiting for %s to become "
"reachable" % remote_ip)
except Exception:
LOG.exception("Unable to access {dest} via ssh to "
"floating-ip {src}".format(dest=remote_ip,
src=floating_ip))
debug.log_ip_ns()
raise
@test.attr(type='smoke')
@test.services('compute', 'network')
def test_network_basic_ops(self):
"""
For a freshly-booted VM with an IP address ("port") on a given
network:
- the Tempest host can ping the IP address. This implies, but
does not guarantee (see the ssh check that follows), that the
VM has been assigned the correct IP address and has
connectivity to the Tempest host.
- the Tempest host can perform key-based authentication to an
ssh server hosted at the IP address. This check guarantees
that the IP address is associated with the target VM.
- the Tempest host can ssh into the VM via the IP address and
successfully execute the following:
- ping an external IP address, implying external connectivity.
- ping an external hostname, implying that dns is correctly
configured.
- ping an internal IP address, implying connectivity to another
VM on the same network.
- detach the floating-ip from the VM and verify that it becomes
unreachable
- associate detached floating ip to a new VM and verify connectivity.
VMs are created with unique keypair so connectivity also asserts that
floating IP is associated with the new VM instead of the old one
Verifies that floating IP status is updated correctly after each change
"""
self._setup_network_and_servers()
self._check_public_network_connectivity(should_connect=True)
self._check_network_internal_connectivity(network=self.network)
self._check_network_external_connectivity()
self._disassociate_floating_ips()
self._check_public_network_connectivity(should_connect=False,
msg="after disassociate "
"floating ip")
self._reassociate_floating_ips()
self._check_public_network_connectivity(should_connect=True,
msg="after re-associate "
"floating ip")
@testtools.skipUnless(CONF.compute_feature_enabled.interface_attach,
'NIC hotplug not available')
@test.attr(type='smoke')
@test.services('compute', 'network')
def test_hotplug_nic(self):
"""
1. create a new network, with no gateway (to prevent overwriting VM's
gateway)
2. connect VM to new network
3. set static ip and bring new nic up
4. check VM can ping new network dhcp port
"""
self._setup_network_and_servers()
self._check_public_network_connectivity(should_connect=True)
self._create_new_network()
self._hotplug_server()
self._check_network_internal_connectivity(network=self.new_net)
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