def test_marathon_backup_and_check_apps(marathon_service_name): backup_file1 = 'backup1.tar' backup_file2 = 'backup2.tar' backup_dir = '/tmp' for master_ip in shakedown.get_all_master_ips(): _ = shakedown.run_command(master_ip, "rm {}/{}".format(backup_dir, backup_file1)) _ = shakedown.run_command(master_ip, "rm {}/{}".format(backup_dir, backup_file2)) backup_url1 = 'file://{}/{}'.format(backup_dir, backup_file1) backup_url2 = 'file://{}/{}'.format(backup_dir, backup_file2) original_leader = shakedown.marathon_leader_ip() print('leader: {}'.format(original_leader)) app_def = apps.sleep_app() app_id = app_def['id'] client = marathon.create_client() client.add_app(app_def) shakedown.deployment_wait() app = client.get_app(app_id) assert app['tasksRunning'] == 1, "The number of running tasks is {}, but 1 was expected".format(app["tasksRunning"]) # Abdicate the leader with backup original_leader = shakedown.marathon_leader_ip() print('leader: {}'.format(original_leader)) url = 'v2/leader?backup={}'.format(backup_url1) print('DELETE {}'.format(url)) common.delete_marathon_path(url) shakedown.wait_for_service_endpoint(marathon_service_name, timedelta(minutes=5).total_seconds()) @retrying.retry(wait_fixed=1000, stop_max_attempt_number=30, retry_on_exception=common.ignore_exception) def marathon_leadership_changed(): current_leader = shakedown.marathon_leader_ip() print('leader: {}'.format(current_leader)) assert original_leader != current_leader, "A new Marathon leader has not been elected" # wait until leader changed marathon_leadership_changed() @retrying.retry(wait_fixed=1000, stop_max_attempt_number=30, retry_on_exception=common.ignore_exception) def check_app_existence(expected_instances): try: app = client.get_app(app_id) except Exception as e: if expected_instances != 0: raise e else: if expected_instances == 0: assert False, "The application resurrected" else: app['tasksRunning'] == expected_instances, \ "The number of running tasks is {}, but {} was expected".format( app["tasksRunning"], expected_instances) # check if app definition is still there and one instance is still running after new leader was elected check_app_existence(1) # then remove client.remove_app(app_id) shakedown.deployment_wait() check_app_existence(0) # Do a second backup. Before MARATHON-7525 we had the problem, that doing a backup after an app was deleted # leads to the state that marathon was not able to re-start, because the second backup failed constantly. # Abdicate the leader with backup original_leader = shakedown.marathon_leader_ip() print('leader: {}'.format(original_leader)) url = 'v2/leader?backup={}'.format(backup_url2) print('DELETE {}'.format(url)) common.delete_marathon_path(url) shakedown.wait_for_service_endpoint(marathon_service_name, timedelta(minutes=5).total_seconds()) # wait until leader changed # if leader changed, this means that marathon was able to start again, which is great :-). marathon_leadership_changed() # check if app definition is still not there and no instance is running after new leader was elected check_app_existence(0)