def test_get_compute_lists(mocker, cmd_output, enabled, disabled):
controller = mock.Mock()
run_nova_cmd = mocker.patch(
"octane.util.nova.run_nova_cmd", return_value=cmd_output)
assert (enabled, disabled) == nova.get_compute_lists(controller)
run_nova_cmd.assert_called_once_with(
["nova", "service-list", "--binary", "nova-compute"], controller)
def evacuate_host(self):
controller = env_util.get_one_controller(self.env)
enabled_computes, disabled_computes = nova.get_compute_lists(
controller)
node_fqdn = node_util.get_nova_node_handle(self.node)
if [node_fqdn] == enabled_computes:
raise Exception("You try to disable last enabled nova-compute "
"service on {hostname} in cluster. "
"This leads to disable host evacuation. "
"Fix this problem and run unpgrade-node "
"command again".format(hostname=node_fqdn))
if nova.do_nova_instances_exist(controller, node_fqdn, "ERROR"):
raise Exception(
"There are instances in ERROR state on {hostname},"
"please fix this problem and start upgrade_node "
"command again".format(hostname=node_fqdn))
if node_fqdn in disabled_computes:
LOG.warn("Node {0} already disabled".format(node_fqdn))
else:
nova.run_nova_cmd(
["nova", "service-disable", node_fqdn, "nova-compute"],
controller, False)
for instance_id in nova.get_active_instances(controller, node_fqdn):
nova.run_nova_cmd(
["nova", "live-migration", instance_id], controller, False)
nova.waiting_for_status_completed(
controller, node_fqdn, "MIGRATING")
if nova.do_nova_instances_exist(controller, node_fqdn):
raise Exception(
"There are instances on {hostname} after host-evacuation, "
"please fix this problem and start upgrade_node "
"command again".format(hostname=node_fqdn))