def add_maintenance_service(name, backend_guid, abm_name): """ Add a maintenance service with a specific name :param name: Name of the service to add :type name: str :param backend_guid: Backend for which the maintenance service needs to run :type backend_guid: str :param abm_name: Name of the ABM cluster :type abm_name: str """ if ServiceManager.has_service(name, MaintenanceController._local_client) is False: config_location = '/ovs/alba/backends/{0}/maintenance/config'.format(backend_guid) alba_config = Configuration.get_configuration_path(config_location) node_id = os.environ.get('ASD_NODE_ID') params = {'ALBA_CONFIG': alba_config, 'LOG_SINK': LogHandler.get_sink_path('alba_maintenance')} Configuration.set(config_location, json.dumps({ 'log_level': 'info', 'albamgr_cfg_url': Configuration.get_configuration_path('/ovs/arakoon/{0}/config'.format(abm_name)), 'read_preference': [] if node_id is None else [node_id] }, indent=4), raw=True) ServiceManager.add_service(name=MaintenanceController.MAINTENANCE_PREFIX, client=MaintenanceController._local_client, params=params, target_name=name) ServiceManager.start_service(name, MaintenanceController._local_client)
def create_asd(partition_alias): """ Creates and starts an ASD on a given disk :param partition_alias: Alias of the partition of a disk (eg: /dev/disk/by-id/scsi-1ATA_TOSHIBA_MK2002TSKB_92M1KDMHF-part1) :type partition_alias: str :return: None """ all_asds = {} mountpoint = None for alias, mtpt in FSTab.read().iteritems(): all_asds.update(ASDController.list_asds(mtpt)) if alias == partition_alias: mountpoint = mtpt if mountpoint is None: raise RuntimeError('Failed to retrieve the mountpoint for partition with alias: {0}'.format(partition_alias)) # Fetch disk information disk_size = int(ASDController._local_client.run(['df', '-B', '1', '--output=size', mountpoint]).splitlines()[1]) # Find out appropriate disk size asds = 1.0 for asd_id in os.listdir(mountpoint): if os.path.isdir('/'.join([mountpoint, asd_id])) and Configuration.exists(ASDController.ASD_CONFIG.format(asd_id)): asds += 1 asd_size = int(math.floor(disk_size / asds)) for asd_id in os.listdir(mountpoint): if os.path.isdir('/'.join([mountpoint, asd_id])) and Configuration.exists(ASDController.ASD_CONFIG.format(asd_id)): config = json.loads(Configuration.get(ASDController.ASD_CONFIG.format(asd_id), raw=True)) config['capacity'] = asd_size config['rocksdb_block_cache_size'] = int(asd_size / 1024 / 4) Configuration.set(ASDController.ASD_CONFIG.format(asd_id), json.dumps(config, indent=4), raw=True) try: ServiceManager.send_signal(ASDController.ASD_SERVICE_PREFIX.format(asd_id), signal.SIGUSR1, ASDController._local_client) except Exception as ex: ASDController._logger.info('Could not send signal to ASD for reloading the quota: {0}'.format(ex)) # Prepare & start service asd_id = ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(32)) ASDController._logger.info('Setting up service for disk {0}'.format(partition_alias)) homedir = '{0}/{1}'.format(mountpoint, asd_id) base_port = Configuration.get('{0}/network|port'.format(ASDController.CONFIG_ROOT)) ips = Configuration.get('{0}/network|ips'.format(ASDController.CONFIG_ROOT)) used_ports = [] for asd in all_asds.itervalues(): used_ports.append(asd['port']) if 'rora_port' in asd: used_ports.append(asd['rora_port']) asd_port = base_port rora_port = base_port + 1 while asd_port in used_ports: asd_port += 1 used_ports.append(asd_port) while rora_port in used_ports: rora_port += 1 asd_config = {'home': homedir, 'node_id': ASDController.NODE_ID, 'asd_id': asd_id, 'capacity': asd_size, 'log_level': 'info', 'port': asd_port, 'transport': 'tcp', 'rocksdb_block_cache_size': int(asd_size / 1024 / 4)} if Configuration.get('/ovs/framework/rdma'): asd_config['rora_port'] = rora_port asd_config['rora_transport'] = 'rdma' if ips is not None and len(ips) > 0: asd_config['ips'] = ips if Configuration.exists('{0}/extra'.format(ASDController.CONFIG_ROOT)): data = Configuration.get('{0}/extra'.format(ASDController.CONFIG_ROOT)) asd_config.update(data) Configuration.set(ASDController.ASD_CONFIG.format(asd_id), json.dumps(asd_config, indent=4), raw=True) service_name = ASDController.ASD_SERVICE_PREFIX.format(asd_id) params = {'CONFIG_PATH': Configuration.get_configuration_path('/ovs/alba/asds/{0}/config'.format(asd_id)), 'SERVICE_NAME': service_name, 'LOG_SINK': LogHandler.get_sink_path('alba_asd')} os.mkdir(homedir) ASDController._local_client.run(['chown', '-R', 'alba:alba', homedir]) ServiceManager.add_service('alba-asd', ASDController._local_client, params, service_name) ASDController.start_asd(asd_id)