5a4c7f2eab
This patch ensure the on_present event of the vif handler is retried if all the resources related to the namespace where the pod belongs are not yet created. Change-Id: I1345cafffdd98077d23fd8b761c9527ff6316956 Closes-Bug: 1847085
212 lines
9.0 KiB
Python
212 lines
9.0 KiB
Python
# Copyright 2018 Red Hat, Inc.
|
|
#
|
|
# 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 kuryr.lib._i18n import _
|
|
from oslo_config import cfg as oslo_cfg
|
|
from oslo_log import log as logging
|
|
|
|
from kuryr_kubernetes import clients
|
|
from kuryr_kubernetes import constants
|
|
from kuryr_kubernetes.controller.drivers import default_subnet
|
|
from kuryr_kubernetes.controller.drivers import utils as c_utils
|
|
from kuryr_kubernetes import exceptions
|
|
from kuryr_kubernetes import utils
|
|
|
|
from neutronclient.common import exceptions as n_exc
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
namespace_subnet_driver_opts = [
|
|
oslo_cfg.StrOpt('pod_router',
|
|
help=_("Default Neutron router ID where pod subnet(s) is "
|
|
"connected")),
|
|
oslo_cfg.StrOpt('pod_subnet_pool',
|
|
help=_("Default Neutron subnet pool ID where pod subnets "
|
|
"get their cidr from")),
|
|
]
|
|
|
|
oslo_cfg.CONF.register_opts(namespace_subnet_driver_opts, "namespace_subnet")
|
|
|
|
|
|
class NamespacePodSubnetDriver(default_subnet.DefaultPodSubnetDriver):
|
|
"""Provides subnet for Pod port based on a Pod's namespace."""
|
|
|
|
def get_subnets(self, pod, project_id):
|
|
pod_namespace = pod['metadata']['namespace']
|
|
return self.get_namespace_subnet(pod_namespace)
|
|
|
|
def get_namespace_subnet(self, namespace, subnet_id=None):
|
|
if not subnet_id:
|
|
subnet_id = self._get_namespace_subnet_id(namespace)
|
|
return {subnet_id: utils.get_subnet(subnet_id)}
|
|
|
|
def _get_namespace_subnet_id(self, namespace):
|
|
kubernetes = clients.get_kubernetes_client()
|
|
try:
|
|
ns = kubernetes.get('%s/namespaces/%s' % (constants.K8S_API_BASE,
|
|
namespace))
|
|
except exceptions.K8sClientException:
|
|
LOG.exception("Kubernetes Client Exception.")
|
|
raise exceptions.ResourceNotReady(namespace)
|
|
|
|
try:
|
|
annotations = ns['metadata']['annotations']
|
|
net_crd_name = annotations[constants.K8S_ANNOTATION_NET_CRD]
|
|
except KeyError:
|
|
LOG.warning("Namespace missing CRD annotations for selecting the "
|
|
"corresponding subnet.")
|
|
raise exceptions.ResourceNotReady(namespace)
|
|
|
|
try:
|
|
net_crd = kubernetes.get('%s/kuryrnets/%s' % (
|
|
constants.K8S_API_CRD, net_crd_name))
|
|
except exceptions.K8sResourceNotFound:
|
|
LOG.warning("Kuryrnet resource not yet created, retrying...")
|
|
raise exceptions.ResourceNotReady(net_crd_name)
|
|
except exceptions.K8sClientException:
|
|
LOG.exception("Kubernetes Client Exception.")
|
|
raise
|
|
|
|
return net_crd['spec']['subnetId']
|
|
|
|
def delete_namespace_subnet(self, net_crd):
|
|
subnet_id = net_crd['spec']['subnetId']
|
|
net_id = net_crd['spec']['netId']
|
|
|
|
self._delete_namespace_network_resources(subnet_id, net_id)
|
|
|
|
def _delete_namespace_network_resources(self, subnet_id, net_id):
|
|
neutron = clients.get_neutron_client()
|
|
if subnet_id:
|
|
router_id = oslo_cfg.CONF.namespace_subnet.pod_router
|
|
try:
|
|
neutron.remove_interface_router(router_id,
|
|
{"subnet_id": subnet_id})
|
|
except n_exc.NotFound:
|
|
LOG.debug("Subnet %(subnet)s not attached to router "
|
|
"%(router)s", {'subnet': subnet_id,
|
|
'router': router_id})
|
|
except n_exc.NeutronClientException:
|
|
LOG.exception("Error deleting subnet %(subnet)s from router "
|
|
"%(router)s.", {'subnet': subnet_id, 'router':
|
|
router_id})
|
|
raise
|
|
|
|
try:
|
|
neutron.delete_network(net_id)
|
|
except n_exc.NotFound:
|
|
LOG.debug("Neutron Network not found: %s", net_id)
|
|
except n_exc.NetworkInUseClient:
|
|
LOG.exception("One or more ports in use on the network %s. "
|
|
"Deleting leftovers ports before retrying", net_id)
|
|
leftover_ports = c_utils.get_ports_by_attrs(status='DOWN',
|
|
network_id=net_id)
|
|
for leftover_port in leftover_ports:
|
|
try:
|
|
neutron.delete_port(leftover_port['id'])
|
|
except n_exc.PortNotFoundClient:
|
|
LOG.debug("Port already deleted.")
|
|
except n_exc.NeutronClientException:
|
|
LOG.debug("Unexpected error deleting leftover port %s. "
|
|
"Skiping it and continue with the other rest.",
|
|
leftover_port['id'])
|
|
continue
|
|
raise exceptions.ResourceNotReady(net_id)
|
|
except n_exc.NeutronClientException:
|
|
LOG.exception("Error deleting network %s.", net_id)
|
|
raise
|
|
|
|
def create_namespace_network(self, namespace, project_id):
|
|
neutron = clients.get_neutron_client()
|
|
|
|
router_id = oslo_cfg.CONF.namespace_subnet.pod_router
|
|
subnet_pool_id = oslo_cfg.CONF.namespace_subnet.pod_subnet_pool
|
|
|
|
# create network with namespace as name
|
|
network_name = "ns/" + namespace + "-net"
|
|
subnet_name = "ns/" + namespace + "-subnet"
|
|
try:
|
|
neutron_net = neutron.create_network(
|
|
{
|
|
"network": {
|
|
"name": network_name,
|
|
"project_id": project_id
|
|
}
|
|
}).get('network')
|
|
c_utils.tag_neutron_resources('networks', [neutron_net['id']])
|
|
|
|
# create a subnet within that network
|
|
try:
|
|
neutron_subnet = neutron.create_subnet(
|
|
{
|
|
"subnet": {
|
|
"network_id": neutron_net['id'],
|
|
"ip_version": 4,
|
|
"name": subnet_name,
|
|
"enable_dhcp": False,
|
|
"subnetpool_id": subnet_pool_id,
|
|
"project_id": project_id
|
|
}
|
|
}).get('subnet')
|
|
except n_exc.Conflict:
|
|
LOG.debug("Max number of retries on neutron side achieved, "
|
|
"raising ResourceNotReady to retry subnet creation "
|
|
"for %s", subnet_name)
|
|
raise exceptions.ResourceNotReady(subnet_name)
|
|
c_utils.tag_neutron_resources('subnets', [neutron_subnet['id']])
|
|
|
|
# connect the subnet to the router
|
|
neutron.add_interface_router(router_id,
|
|
{"subnet_id": neutron_subnet['id']})
|
|
except n_exc.NeutronClientException:
|
|
LOG.exception("Error creating neutron resources for the namespace "
|
|
"%s", namespace)
|
|
raise
|
|
return {'netId': neutron_net['id'],
|
|
'routerId': router_id,
|
|
'subnetId': neutron_subnet['id'],
|
|
'subnetCIDR': neutron_subnet['cidr']}
|
|
|
|
def rollback_network_resources(self, net_crd_spec, namespace):
|
|
neutron = clients.get_neutron_client()
|
|
try:
|
|
neutron.remove_interface_router(net_crd_spec['routerId'],
|
|
{'subnet_id':
|
|
net_crd_spec['subnetId']})
|
|
neutron.delete_network(net_crd_spec['netId'])
|
|
except n_exc.NeutronClientException:
|
|
LOG.exception("Failed to clean up network resources associated to "
|
|
"%(net_id)s, created for the namespace: "
|
|
"%(namespace)s." % {'net_id': net_crd_spec['netId'],
|
|
'namespace': namespace})
|
|
|
|
def cleanup_namespace_networks(self, namespace):
|
|
neutron = clients.get_neutron_client()
|
|
net_name = 'ns/' + namespace + '-net'
|
|
filters = {'name': net_name}
|
|
tags = oslo_cfg.CONF.neutron_defaults.resource_tags
|
|
if tags:
|
|
filters['tags'] = tags
|
|
networks = neutron.list_networks(**filters)['networks']
|
|
if networks:
|
|
for net in networks:
|
|
net_id = net['id']
|
|
subnets = net.get('subnets')
|
|
subnet_id = None
|
|
if subnets:
|
|
# NOTE(ltomasbo): Each network created by kuryr only has
|
|
# one subnet
|
|
subnet_id = subnets[0]
|
|
self._delete_namespace_network_resources(subnet_id, net_id)
|