def scale_cluster(self, cluster, target_count):
ctx = context.ctx()
rollback_count = self._get_ng_counts(cluster)
launcher = _ScaleLauncher()
try:
launcher.launch_instances(ctx, cluster, target_count)
except Exception as ex:
with excutils.save_and_reraise_exception():
self._log_operation_exception("Can't scale cluster '%s' (reason: %s)", cluster, ex)
cluster = conductor.cluster_get(ctx, cluster)
try:
self._rollback_cluster_scaling(ctx, cluster, rollback_count, target_count)
except Exception:
# if something fails during the rollback, we stop
# doing anything further
cluster = conductor.cluster_update(ctx, cluster, {"status": "Error"})
LOG.info(g.format_cluster_status(cluster))
LOG.error("Unable to complete rollback, aborting")
raise
cluster = conductor.cluster_update(ctx, cluster, {"status": "Active"})
LOG.info(g.format_cluster_status(cluster))
LOG.warn("Rollback successful. Throwing off an initial exception.")
finally:
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
return launcher.inst_ids
def scale_cluster(self, cluster, node_group_id_map):
ctx = context.ctx()
instance_ids = []
try:
instance_ids = self._scale_cluster_instances(cluster,
node_group_id_map)
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
cluster = conductor.cluster_get(ctx, cluster)
instances = g.get_instances(cluster, instance_ids)
self._await_active(cluster, instances)
self._assign_floating_ips(instances)
self._await_networks(cluster, instances)
cluster = conductor.cluster_get(ctx, cluster)
volumes.attach_to_instances(
g.get_instances(cluster, instance_ids))
except Exception as ex:
with excutils.save_and_reraise_exception():
self._log_operation_exception(
"Can't scale cluster '%s' (reason: %s)", cluster, ex)
cluster = conductor.cluster_get(ctx, cluster)
self._rollback_cluster_scaling(
cluster, g.get_instances(cluster, instance_ids), ex)
instance_ids = []
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
if cluster.status == 'Decommissioning':
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Error"})
else:
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Active"})
LOG.info(g.format_cluster_status(cluster))
# we should be here with valid cluster: if instances creation
# was not successful all extra-instances will be removed above
if instance_ids:
self._configure_instances(cluster)
return instance_ids
def scale_cluster(self, cluster, node_group_id_map):
ctx = context.ctx()
instance_ids = []
try:
instance_ids = self._scale_cluster_instances(
cluster, node_group_id_map)
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
cluster = conductor.cluster_get(ctx, cluster)
instances = g.get_instances(cluster, instance_ids)
self._await_active(cluster, instances)
self._assign_floating_ips(instances)
self._await_networks(cluster, instances)
cluster = conductor.cluster_get(ctx, cluster)
volumes.attach_to_instances(g.get_instances(cluster, instance_ids))
except Exception as ex:
with excutils.save_and_reraise_exception():
self._log_operation_exception(
"Can't scale cluster '%s' (reason: %s)", cluster, ex)
cluster = conductor.cluster_get(ctx, cluster)
self._rollback_cluster_scaling(
cluster, g.get_instances(cluster, instance_ids), ex)
instance_ids = []
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
if cluster.status == 'Decommissioning':
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Error"})
else:
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Active"})
LOG.info(g.format_cluster_status(cluster))
# we should be here with valid cluster: if instances creation
# was not successful all extra-instances will be removed above
if instance_ids:
self._configure_instances(cluster)
return instance_ids
def scale_cluster(id, data):
ctx = context.ctx()
cluster = conductor.cluster_get(ctx, id)
plugin = plugin_base.PLUGINS.get_plugin(cluster.plugin_name)
existing_node_groups = data.get('resize_node_groups', [])
additional_node_groups = data.get('add_node_groups', [])
#the next map is the main object we will work with
#to_be_enlarged : {node_group_id: desired_amount_of_instances}
to_be_enlarged = {}
for ng in existing_node_groups:
ng_id = g.find(cluster.node_groups, name=ng['name'])['id']
to_be_enlarged.update({ng_id: ng['count']})
additional = construct_ngs_for_scaling(cluster, additional_node_groups)
cluster = conductor.cluster_get(ctx, cluster)
# update nodegroup image usernames
for nodegroup in cluster.node_groups:
if additional.get(nodegroup.id):
image_username = INFRA.get_node_group_image_username(nodegroup)
conductor.node_group_update(ctx, nodegroup,
{"image_username": image_username})
cluster = conductor.cluster_get(ctx, cluster)
try:
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Validating"})
LOG.info(g.format_cluster_status(cluster))
plugin.validate_scaling(cluster, to_be_enlarged, additional)
except Exception:
with excutils.save_and_reraise_exception():
g.clean_cluster_from_empty_ng(cluster)
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Active"})
LOG.info(g.format_cluster_status(cluster))
# If we are here validation is successful.
# So let's update to_be_enlarged map:
to_be_enlarged.update(additional)
for node_group in cluster.node_groups:
if node_group.id not in to_be_enlarged:
to_be_enlarged[node_group.id] = node_group.count
context.spawn("cluster-scaling-%s" % id, _provision_scaled_cluster, id,
to_be_enlarged)
return conductor.cluster_get(ctx, id)
def scale_cluster(self, cluster, target_count):
ctx = context.ctx()
rollback_count = self._get_ng_counts(cluster)
launcher = _ScaleLauncher()
try:
launcher.launch_instances(ctx, cluster, target_count)
except Exception as ex:
with excutils.save_and_reraise_exception():
self._log_operation_exception(
"Can't scale cluster '%s' (reason: %s)", cluster, ex)
cluster = conductor.cluster_get(ctx, cluster)
try:
self._rollback_cluster_scaling(ctx, cluster,
rollback_count,
target_count)
except Exception:
# if something fails during the rollback, we stop
# doing anything further
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Error"})
LOG.info(g.format_cluster_status(cluster))
LOG.error("Unable to complete rollback, aborting")
raise
cluster = conductor.cluster_update(ctx, cluster,
{"status": "Active"})
LOG.info(g.format_cluster_status(cluster))
LOG.warn(
"Rollback successful. Throwing off an initial exception.")
finally:
cluster = conductor.cluster_get(ctx, cluster)
g.clean_cluster_from_empty_ng(cluster)
return launcher.inst_ids
