Container Infrastructure Management Service for OpenStack
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# Copyright 2016 Rackspace Inc. 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.
from oslo_log import log as logging
from pbr.version import SemanticVersion as SV
from magnum.common import clients
from magnum.common import exception
from magnum.common import keystone
from magnum.common import octavia
from magnum.drivers.common import k8s_monitor
from magnum.drivers.heat import driver
from magnum.drivers.k8s_fedora_atomic_v1 import template_def
LOG = logging.getLogger(__name__)
class Driver(driver.HeatDriver):
@property
def provides(self):
return [
{'server_type': 'vm',
'os': 'fedora-atomic',
'coe': 'kubernetes'},
]
def get_template_definition(self):
return template_def.AtomicK8sTemplateDefinition()
def get_monitor(self, context, cluster):
return k8s_monitor.K8sMonitor(context, cluster)
def get_scale_manager(self, context, osclient, cluster):
# FIXME: Until the kubernetes client is fixed, remove
# the scale_manager.
# https://bugs.launchpad.net/magnum/+bug/1746510
return None
def pre_delete_cluster(self, context, cluster):
"""Delete cloud resources before deleting the cluster."""
if keystone.is_octavia_enabled():
LOG.info("Starting to delete loadbalancers for cluster %s",
cluster.uuid)
octavia.delete_loadbalancers(context, cluster)
def upgrade_cluster(self, context, cluster, cluster_template,
max_batch_size, nodegroup, scale_manager=None,
rollback=False):
osc = clients.OpenStackClients(context)
_, heat_params, _ = (
self._extract_template_definition(context, cluster,
scale_manager=scale_manager))
# Extract labels/tags from cluster not template
# There are some version tags are not decalared in labels explicitly,
# so we need to get them from heat_params based on the labels given in
# new cluster template.
current_addons = {}
new_addons = {}
for label in cluster_template.labels:
# This is upgrade API, so we don't introduce new stuff by this API,
# but just focus on the version change.
new_addons[label] = cluster_template.labels[label]
if ((label.endswith('_tag') or
label.endswith('_version')) and label in heat_params):
current_addons[label] = heat_params[label]
if (SV.from_pip_string(new_addons[label]) <
SV.from_pip_string(current_addons[label])):
raise exception.InvalidVersion(tag=label)
heat_params["server_image"] = cluster_template.image_id
heat_params["master_image"] = cluster_template.image_id
heat_params["minion_image"] = cluster_template.image_id
# NOTE(flwang): Overwrite the kube_tag as well to avoid a server
# rebuild then do the k8s upgrade again, when both image id and
# kube_tag changed
heat_params["kube_tag"] = cluster_template.labels["kube_tag"]
heat_params["master_kube_tag"] = cluster_template.labels["kube_tag"]
heat_params["minion_kube_tag"] = cluster_template.labels["kube_tag"]
heat_params["update_max_batch_size"] = max_batch_size
# Rules: 1. No downgrade 2. Explicitly override 3. Merging based on set
# Update heat_params based on the data generated above
del heat_params['kube_service_account_private_key']
del heat_params['kube_service_account_key']
for label in new_addons:
heat_params[label] = cluster_template.labels[label]
cluster['cluster_template_id'] = cluster_template.uuid
new_labels = cluster.labels.copy()
new_labels.update(cluster_template.labels)
cluster['labels'] = new_labels
fields = {
'existing': True,
'parameters': heat_params,
'disable_rollback': not rollback
}
osc.heat().stacks.update(cluster.stack_id, **fields)