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.drivers.heat import driver
from magnum.drivers.k8s_fedora_atomic_v1 import template_def
LOG = logging.getLogger(__name__)
class Driver(driver.KubernetesDriver):
@property
def provides(self):
return [
{'server_type': 'vm',
'os': 'fedora-atomic',
'coe': 'kubernetes'},
]
def get_template_definition(self):
return template_def.AtomicK8sTemplateDefinition()
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["kube_version"] = 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)