def extend_cluster(master_ip, new_ip, cluster_name, base_dir, locked=True, filesystem=False, ports=None):
"""
Extends a cluster to a given new node
:param master_ip: IP of one of the already existing nodes
:type master_ip: str
:param new_ip: IP address of the node to be added
:type new_ip: str
:param cluster_name: Name of the cluster to be extended
:type cluster_name: str
:param base_dir: Base directory that will hold the db and tlogs
:type base_dir: str
:param locked: Indicates whether the extend should run in a locked context (e.g. to prevent port conflicts)
:type locked: bool
:param filesystem: Indicates whether the configuration should be on the filesystem or in a configuration cluster
:type filesystem: bool
:param ports: A list of ports to be used for this cluster's node
:type ports: list
:return: Ports used by arakoon cluster
:rtype: dict
"""
ArakoonInstaller._logger.debug('Extending cluster {0} from {1} to {2}'.format(cluster_name, master_ip, new_ip))
base_dir = base_dir.rstrip('/')
config = ArakoonClusterConfig(cluster_name, filesystem)
config.load_config(master_ip)
client = SSHClient(new_ip, username=ArakoonInstaller.SSHCLIENT_USER)
node_name = System.get_my_machine_id(client)
home_dir = ArakoonInstaller.ARAKOON_HOME_DIR.format(base_dir, cluster_name)
tlog_dir = ArakoonInstaller.ARAKOON_TLOG_DIR.format(base_dir, cluster_name)
ArakoonInstaller.clean_leftover_arakoon_data(new_ip, [home_dir, tlog_dir])
port_mutex = None
try:
if locked is True:
from ovs.extensions.generic.volatilemutex import volatile_mutex
port_mutex = volatile_mutex('arakoon_install_ports_{0}'.format(new_ip))
port_mutex.acquire(wait=60)
if ports is None:
ports = ArakoonInstaller._get_free_ports(client)
if node_name not in [node.name for node in config.nodes]:
config.nodes.append(ArakoonNodeConfig(name=node_name,
ip=new_ip,
client_port=ports[0],
messaging_port=ports[1],
log_sinks=LogHandler.get_sink_path('arakoon_server'),
crash_log_sinks=LogHandler.get_sink_path('arakoon_server_crash'),
home=home_dir,
tlog_dir=tlog_dir))
ArakoonInstaller._deploy(config, filesystem=filesystem)
finally:
if port_mutex is not None:
port_mutex.release()
ArakoonInstaller._logger.debug('Extending cluster {0} from {1} to {2} completed'.format(cluster_name, master_ip, new_ip))
return {'client_port': ports[0],
'messaging_port': ports[1],
'ips': [node.ip for node in config.nodes]}
def extend_cluster(master_ip, new_ip, cluster_name, base_dir, locked=True):
"""
Extends a cluster to a given new node
:param master_ip: IP of one of the already existing nodes
:type master_ip: str
:param new_ip: IP address of the node to be added
:type new_ip: str
:param cluster_name: Name of the cluster to be extended
:type cluster_name: str
:param base_dir: Base directory that will hold the db and tlogs
:type base_dir: str
:param locked: Indicates whether the extend should run in a locked context (e.g. to prevent port conflicts)
:type locked: bool
:return: Ports used by arakoon cluster
:rtype: dict
"""
ArakoonInstaller._logger.debug('Extending cluster {0} from {1} to {2}'.format(cluster_name, master_ip, new_ip))
base_dir = base_dir.rstrip('/')
config = ArakoonClusterConfig(cluster_name)
config.load_config()
client = SSHClient(new_ip, username=ArakoonInstaller.SSHCLIENT_USER)
node_name = System.get_my_machine_id(client)
home_dir = ArakoonInstaller.ARAKOON_HOME_DIR.format(base_dir, cluster_name)
tlog_dir = ArakoonInstaller.ARAKOON_TLOG_DIR.format(base_dir, cluster_name)
ArakoonInstaller.clean_leftover_arakoon_data(new_ip, [home_dir, tlog_dir])
port_mutex = None
try:
if locked is True:
from ovs.extensions.generic.volatilemutex import volatile_mutex
port_mutex = volatile_mutex('arakoon_install_ports_{0}'.format(new_ip))
port_mutex.acquire(wait=60)
ports = ArakoonInstaller._get_free_ports(client)
if node_name not in [node.name for node in config.nodes]:
config.nodes.append(ArakoonNodeConfig(name=node_name,
ip=new_ip,
client_port=ports[0],
messaging_port=ports[1],
log_sinks=LogHandler.get_sink_path('arakoon_server'),
crash_log_sinks=LogHandler.get_sink_path('arakoon_server_crash'),
home=home_dir,
tlog_dir=tlog_dir))
ArakoonInstaller._deploy(config)
finally:
if port_mutex is not None:
port_mutex.release()
ArakoonInstaller._logger.debug('Extending cluster {0} from {1} to {2} completed'.format(cluster_name, master_ip, new_ip))
return {'client_port': ports[0],
'messaging_port': ports[1]}
def create_cluster(cluster_name, cluster_type, ip, base_dir, plugins=None, locked=True, internal=True, claim=False):
"""
Always creates a cluster but marks it's usage according to the internal flag
:param cluster_name: Name of the cluster
:type cluster_name: str
:param cluster_type: Type of the cluster (See ServiceType.ARAKOON_CLUSTER_TYPES)
:type cluster_type: str
:param ip: IP address of the first node of the new cluster
:type ip: str
:param base_dir: Base directory that should contain the data and tlogs
:type base_dir: str
:param plugins: Plugins that should be added to the configuration file
:type plugins: list
:param locked: Indicates whether the create should run in a locked context (e.g. to prevent port conflicts)
:type locked: bool
:param internal: Is cluster internally managed by OVS
:type internal: bool
:param claim: Claim the cluster right away
:type claim: bool
:return: Ports used by arakoon cluster
:rtype: dict
"""
if cluster_type not in ServiceType.ARAKOON_CLUSTER_TYPES:
raise ValueError('Cluster type {0} is not supported. Please choose from {1}'.format(cluster_type, ', '.join(ServiceType.ARAKOON_CLUSTER_TYPES)))
if EtcdConfiguration.dir_exists('/ovs/arakoon/{0}'.format(cluster_name)):
raise ValueError('An Arakoon cluster with name "{0}" already exists'.format(cluster_name))
ArakoonInstaller._logger.debug('Creating cluster {0} on {1}'.format(cluster_name, ip))
base_dir = base_dir.rstrip('/')
client = SSHClient(ip, username=ArakoonInstaller.SSHCLIENT_USER)
if ArakoonInstaller.is_running(cluster_name, client):
ArakoonInstaller._logger.info('Arakoon service running for cluster {0}'.format(cluster_name))
config = ArakoonClusterConfig(cluster_name, plugins)
config.load_config()
for node in config.nodes:
if node.ip == ip:
return {'client_port': node.client_port,
'messaging_port': node.messaging_port}
node_name = System.get_my_machine_id(client)
home_dir = ArakoonInstaller.ARAKOON_HOME_DIR.format(base_dir, cluster_name)
tlog_dir = ArakoonInstaller.ARAKOON_TLOG_DIR.format(base_dir, cluster_name)
ArakoonInstaller.clean_leftover_arakoon_data(ip, [home_dir, tlog_dir])
port_mutex = None
try:
if locked is True:
from ovs.extensions.generic.volatilemutex import volatile_mutex
port_mutex = volatile_mutex('arakoon_install_ports_{0}'.format(ip))
port_mutex.acquire(wait=60)
ports = ArakoonInstaller._get_free_ports(client)
config = ArakoonClusterConfig(cluster_name, plugins)
config.nodes.append(ArakoonNodeConfig(name=node_name,
ip=ip,
client_port=ports[0],
messaging_port=ports[1],
log_sinks=LogHandler.get_sink_path('arakoon_server'),
crash_log_sinks=LogHandler.get_sink_path('arakoon_server_crash'),
home=home_dir,
tlog_dir=tlog_dir))
ArakoonInstaller._deploy(config)
metadata = ArakoonClusterMetadata(cluster_id=cluster_name)
metadata.internal = internal
metadata.cluster_type = cluster_type.upper()
metadata.write()
if claim is True:
metadata.claim()
finally:
if port_mutex is not None:
port_mutex.release()
ArakoonInstaller._logger.debug('Creating cluster {0} on {1} completed'.format(cluster_name, ip))
return {'metadata': metadata,
'client_port': ports[0],
'messaging_port': ports[1]}
def _voldrv_arakoon_checkup(create_cluster):
def _add_service(service_storagerouter, arakoon_ports, service_name):
""" Add a service to the storage router """
new_service = Service()
new_service.name = service_name
new_service.type = service_type
new_service.ports = arakoon_ports
new_service.storagerouter = service_storagerouter
new_service.save()
return new_service
current_ips = []
current_services = []
service_type = ServiceTypeList.get_by_name(
ServiceType.SERVICE_TYPES.ARAKOON)
cluster_name = Configuration.get(
'/ovs/framework/arakoon_clusters').get('voldrv')
if cluster_name is not None:
arakoon_service_name = ArakoonInstaller.get_service_name_for_cluster(
cluster_name=cluster_name)
for service in service_type.services:
if service.name == arakoon_service_name:
current_services.append(service)
if service.is_internal is True:
current_ips.append(service.storagerouter.ip)
all_sr_ips = [
storagerouter.ip
for storagerouter in StorageRouterList.get_slaves()
]
available_storagerouters = {}
for storagerouter in StorageRouterList.get_masters():
storagerouter.invalidate_dynamics(['partition_config'])
if len(storagerouter.partition_config[DiskPartition.ROLES.DB]) > 0:
available_storagerouters[storagerouter] = DiskPartition(
storagerouter.partition_config[DiskPartition.ROLES.DB][0])
all_sr_ips.append(storagerouter.ip)
if create_cluster is True and len(
current_services) == 0: # Create new cluster
metadata = ArakoonInstaller.get_unused_arakoon_metadata_and_claim(
cluster_type=ServiceType.ARAKOON_CLUSTER_TYPES.SD)
if metadata is None: # No externally managed cluster found, we create 1 ourselves
if not available_storagerouters:
raise RuntimeError(
'Could not find any Storage Router with a DB role')
storagerouter, partition = available_storagerouters.items()[0]
arakoon_voldrv_cluster = 'voldrv'
arakoon_installer = ArakoonInstaller(
cluster_name=arakoon_voldrv_cluster)
arakoon_installer.create_cluster(
cluster_type=ServiceType.ARAKOON_CLUSTER_TYPES.SD,
ip=storagerouter.ip,
base_dir=partition.folder,
log_sinks=LogHandler.get_sink_path(
'arakoon-server_{0}'.format(arakoon_voldrv_cluster)),
crash_log_sinks=LogHandler.get_sink_path(
'arakoon-server-crash_{0}'.format(
arakoon_voldrv_cluster)))
arakoon_installer.start_cluster()
ports = arakoon_installer.ports[storagerouter.ip]
metadata = arakoon_installer.metadata
current_ips.append(storagerouter.ip)
else:
ports = []
storagerouter = None
cluster_name = metadata['cluster_name']
Configuration.set('/ovs/framework/arakoon_clusters|voldrv',
cluster_name)
StorageDriverController._logger.info(
'Claiming {0} managed arakoon cluster: {1}'.format(
'externally' if storagerouter is None else 'internally',
cluster_name))
StorageDriverController._configure_arakoon_to_volumedriver(
cluster_name=cluster_name)
current_services.append(
_add_service(
service_storagerouter=storagerouter,
arakoon_ports=ports,
service_name=ArakoonInstaller.get_service_name_for_cluster(
cluster_name=cluster_name)))
cluster_name = Configuration.get(
'/ovs/framework/arakoon_clusters').get('voldrv')
if cluster_name is None:
return
metadata = ArakoonInstaller.get_arakoon_metadata_by_cluster_name(
cluster_name=cluster_name)
if 0 < len(current_services) < len(
available_storagerouters) and metadata['internal'] is True:
for storagerouter, partition in available_storagerouters.iteritems(
):
if storagerouter.ip in current_ips:
continue
arakoon_installer = ArakoonInstaller(cluster_name=cluster_name)
arakoon_installer.load()
arakoon_installer.extend_cluster(
new_ip=storagerouter.ip,
base_dir=partition.folder,
log_sinks=LogHandler.get_sink_path(
'arakoon-server_{0}'.format(cluster_name)),
crash_log_sinks=LogHandler.get_sink_path(
'arakoon-server-crash_{0}'.format(cluster_name)))
_add_service(
service_storagerouter=storagerouter,
arakoon_ports=arakoon_installer.ports[storagerouter.ip],
service_name=ArakoonInstaller.get_service_name_for_cluster(
cluster_name=cluster_name))
current_ips.append(storagerouter.ip)
arakoon_installer.restart_cluster_after_extending(
new_ip=storagerouter.ip)
StorageDriverController._configure_arakoon_to_volumedriver(
cluster_name=cluster_name)
def execute_scrub_work(queue, vpool, scrub_info, error_messages):
"""
Executes scrub work for a given vDisk queue and vPool, based on scrub_info
:param queue: a Queue with vDisk guids that need to be scrubbed (they should only be member of a single vPool)
:type queue: Queue
:param vpool: the vPool object of the vDisks
:type vpool: VPool
:param scrub_info: A dict containing scrub information: `scrub_path` with the path where to scrub and `storage_router` with the StorageRouter
that needs to do the work
:type scrub_info: dict
:param error_messages: A list of error messages to be filled
:type error_messages: list
:return: a list of error messages
:rtype: list
"""
def _verify_mds_config(current_vdisk):
current_vdisk.invalidate_dynamics('info')
vdisk_configs = current_vdisk.info['metadata_backend_config']
if len(vdisk_configs) == 0:
raise RuntimeError('Could not load MDS configuration')
return vdisk_configs
client = None
lock_time = 5 * 60
storagerouter = scrub_info['storage_router']
scrub_directory = '{0}/scrub_work_{1}_{2}'.format(scrub_info['scrub_path'], vpool.name, storagerouter.name)
scrub_config_key = 'ovs/vpools/{0}/proxies/scrub/scrub_config_{1}'.format(vpool.guid, storagerouter.guid)
backend_config_key = 'ovs/vpools/{0}/proxies/scrub/backend_config_{1}'.format(vpool.guid, storagerouter.guid)
alba_proxy_service = 'ovs-albaproxy_{0}_{1}_scrub'.format(vpool.name, storagerouter.name)
# Deploy a proxy
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Deploying ALBA proxy {2}'.format(vpool.name, storagerouter.name, alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_create(scrub_directory)
client.dir_chmod(scrub_directory, 0777) # Celery task executed by 'ovs' user and should be able to write in it
if ServiceManager.has_service(name=alba_proxy_service, client=client) is True and ServiceManager.get_service_status(name=alba_proxy_service, client=client) is True:
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Re-using existing proxy service {2}'.format(vpool.name, storagerouter.name, alba_proxy_service))
scrub_config = Configuration.get(scrub_config_key)
else:
machine_id = System.get_my_machine_id(client)
port_range = Configuration.get('/ovs/framework/hosts/{0}/ports|storagedriver'.format(machine_id))
port = System.get_free_ports(selected_range=port_range, nr=1, client=client)[0]
# Scrub config
# {u'albamgr_cfg_url': u'arakoon://config/ovs/vpools/71e2f717-f270-4a41-bbb0-d4c8c084d43e/proxies/64759516-3471-4321-b912-fb424568fc5b/config/abm?ini=%2Fopt%2FOpenvStorage%2Fconfig%2Farakoon_cacc.ini',
# u'fragment_cache': [u'none'],
# u'ips': [u'127.0.0.1'],
# u'log_level': u'info',
# u'manifest_cache_size': 17179869184,
# u'port': 0,
# u'transport': u'tcp'}
# Backend config
# {u'alba_connection_host': u'10.100.193.155',
# u'alba_connection_port': 26204,
# u'alba_connection_preset': u'preset',
# u'alba_connection_timeout': 15,
# u'alba_connection_transport': u'TCP',
# u'backend_interface_retries_on_error': 5,
# u'backend_interface_retry_backoff_multiplier': 2.0,
# u'backend_interface_retry_interval_secs': 1,
# u'backend_type': u'ALBA'}
scrub_config = Configuration.get('ovs/vpools/{0}/proxies/scrub/generic_scrub'.format(vpool.guid))
scrub_config['port'] = port
scrub_config['transport'] = 'tcp'
Configuration.set(scrub_config_key, json.dumps(scrub_config, indent=4), raw=True)
params = {'VPOOL_NAME': vpool.name,
'LOG_SINK': LogHandler.get_sink_path('alba_proxy'),
'CONFIG_PATH': Configuration.get_configuration_path(scrub_config_key)}
ServiceManager.add_service(name='ovs-albaproxy', params=params, client=client, target_name=alba_proxy_service)
ServiceManager.start_service(name=alba_proxy_service, client=client)
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Deployed ALBA proxy {2}'.format(vpool.name, storagerouter.name, alba_proxy_service))
backend_config = Configuration.get('ovs/vpools/{0}/hosts/{1}/config'.format(vpool.guid, vpool.storagedrivers[0].storagedriver_id))['backend_connection_manager']
backend_config['alba_connection_host'] = '127.0.0.1'
backend_config['alba_connection_port'] = scrub_config['port']
Configuration.set(backend_config_key, json.dumps({"backend_connection_manager": backend_config}, indent=4), raw=True)
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - An error occurred deploying ALBA proxy {2}'.format(vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
if client is not None and ServiceManager.has_service(name=alba_proxy_service, client=client) is True:
if ServiceManager.get_service_status(name=alba_proxy_service, client=client) is True:
ServiceManager.stop_service(name=alba_proxy_service, client=client)
ServiceManager.remove_service(name=alba_proxy_service, client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
try:
# Empty the queue with vDisks to scrub
with remote(storagerouter.ip, [VDisk]) as rem:
while True:
vdisk = None
vdisk_guid = queue.get(False)
try:
# Check MDS master is local. Trigger MDS handover if necessary
vdisk = rem.VDisk(vdisk_guid)
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Started scrubbing at location {3}'.format(vpool.name, storagerouter.name, vdisk.name, scrub_directory))
configs = _verify_mds_config(current_vdisk=vdisk)
storagedriver = StorageDriverList.get_by_storagedriver_id(vdisk.storagedriver_id)
if configs[0].get('ip') != storagedriver.storagerouter.ip:
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - MDS master is not local, trigger handover'.format(vpool.name, storagerouter.name, vdisk.name))
MDSServiceController.ensure_safety(VDisk(vdisk_guid)) # Do not use a remote VDisk instance here
configs = _verify_mds_config(current_vdisk=vdisk)
if configs[0].get('ip') != storagedriver.storagerouter.ip:
ScheduledTaskController._logger.warning('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Skipping because master MDS still not local'.format(vpool.name, storagerouter.name, vdisk.name))
continue
# Do the actual scrubbing
with vdisk.storagedriver_client.make_locked_client(str(vdisk.volume_id)) as locked_client:
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Retrieve and apply scrub work'.format(vpool.name, storagerouter.name, vdisk.name))
work_units = locked_client.get_scrubbing_workunits()
for work_unit in work_units:
res = locked_client.scrub(work_unit=work_unit,
scratch_dir=scrub_directory,
log_sinks=[LogHandler.get_sink_path('scrubber', allow_override=True)],
backend_config=Configuration.get_configuration_path(backend_config_key))
locked_client.apply_scrubbing_result(scrubbing_work_result=res)
if work_units:
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - {3} work units successfully applied'.format(vpool.name, storagerouter.name, vdisk.name, len(work_units)))
else:
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - No scrubbing required'.format(vpool.name, storagerouter.name, vdisk.name))
except Exception:
if vdisk is None:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk with guid {2} could not be found'.format(vpool.name, storagerouter.name, vdisk_guid)
else:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Scrubbing failed'.format(vpool.name, storagerouter.name, vdisk.name)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
except Empty: # Raised when all items have been fetched from the queue
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Queue completely processed'.format(vpool.name, storagerouter.name))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Scrubbing failed'.format(vpool.name, storagerouter.name)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
# Delete the proxy again
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Removing service {2}'.format(vpool.name, storagerouter.name, alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_delete(scrub_directory)
if ServiceManager.has_service(alba_proxy_service, client=client):
ServiceManager.stop_service(alba_proxy_service, client=client)
ServiceManager.remove_service(alba_proxy_service, client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
ScheduledTaskController._logger.info('Scrubber - vPool {0} - StorageRouter {1} - Removed service {2}'.format(vpool.name, storagerouter.name, alba_proxy_service))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Removing service {2} failed'.format(vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
def _deploy_stack_and_scrub(queue, vpool, scrub_info, error_messages):
"""
Executes scrub work for a given vDisk queue and vPool, based on scrub_info
:param queue: a Queue with vDisk guids that need to be scrubbed (they should only be member of a single vPool)
:type queue: Queue
:param vpool: the vPool object of the vDisks
:type vpool: VPool
:param scrub_info: A dict containing scrub information:
`scrub_path` with the path where to scrub
`storage_router` with the StorageRouter that needs to do the work
:type scrub_info: dict
:param error_messages: A list of error messages to be filled (by reference)
:type error_messages: list
:return: None
:rtype: NoneType
"""
if len(vpool.storagedrivers
) == 0 or not vpool.storagedrivers[0].storagedriver_id:
error_messages.append(
'vPool {0} does not have any valid StorageDrivers configured'.
format(vpool.name))
return
service_manager = ServiceFactory.get_manager()
client = None
lock_time = 5 * 60
storagerouter = scrub_info['storage_router']
partition_guid = scrub_info['partition_guid']
alba_proxy_service = 'ovs-albaproxy_{0}_{1}_{2}_scrub'.format(
vpool.name, storagerouter.name, partition_guid)
scrub_directory = '{0}/scrub_work_{1}_{2}'.format(
scrub_info['scrub_path'], vpool.name, partition_guid)
scrub_config_key = 'ovs/vpools/{0}/proxies/scrub/scrub_config_{1}'.format(
vpool.guid, partition_guid)
backend_config_key = 'ovs/vpools/{0}/proxies/scrub/backend_config_{1}'.format(
vpool.guid, partition_guid)
# Deploy a proxy
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Deploying ALBA proxy {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_create(scrub_directory)
client.dir_chmod(
scrub_directory, 0777
) # Celery task executed by 'ovs' user and should be able to write in it
if service_manager.has_service(
name=alba_proxy_service, client=client
) is True and service_manager.get_service_status(
name=alba_proxy_service, client=client) == 'active':
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Re-using existing proxy service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
scrub_config = Configuration.get(scrub_config_key)
else:
machine_id = System.get_my_machine_id(client)
port_range = Configuration.get(
'/ovs/framework/hosts/{0}/ports|storagedriver'.format(
machine_id))
with volatile_mutex('deploy_proxy_for_scrub_{0}'.format(
storagerouter.guid),
wait=30):
port = System.get_free_ports(selected_range=port_range,
nr=1,
client=client)[0]
scrub_config = Configuration.get(
'ovs/vpools/{0}/proxies/scrub/generic_scrub'.format(
vpool.guid))
scrub_config['port'] = port
scrub_config['transport'] = 'tcp'
Configuration.set(scrub_config_key,
json.dumps(scrub_config, indent=4),
raw=True)
params = {
'VPOOL_NAME':
vpool.name,
'LOG_SINK':
LogHandler.get_sink_path(alba_proxy_service),
'CONFIG_PATH':
Configuration.get_configuration_path(scrub_config_key)
}
service_manager.add_service(name='ovs-albaproxy',
params=params,
client=client,
target_name=alba_proxy_service)
service_manager.start_service(name=alba_proxy_service,
client=client)
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Deployed ALBA proxy {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
backend_config = Configuration.get(
'ovs/vpools/{0}/hosts/{1}/config'.format(
vpool.guid, vpool.storagedrivers[0].storagedriver_id
))['backend_connection_manager']
if backend_config.get('backend_type') != 'MULTI':
backend_config['alba_connection_host'] = '127.0.0.1'
backend_config['alba_connection_port'] = scrub_config[
'port']
else:
for value in backend_config.itervalues():
if isinstance(value, dict):
value['alba_connection_host'] = '127.0.0.1'
value['alba_connection_port'] = scrub_config[
'port']
# Copy backend connection manager information in separate key
Configuration.set(
backend_config_key,
json.dumps({"backend_connection_manager": backend_config},
indent=4),
raw=True)
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - An error occurred deploying ALBA proxy {2}'.format(
vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
GenericController._logger.exception(message)
if client is not None and service_manager.has_service(
name=alba_proxy_service, client=client) is True:
if service_manager.get_service_status(
name=alba_proxy_service, client=client) == 'active':
service_manager.stop_service(name=alba_proxy_service,
client=client)
service_manager.remove_service(name=alba_proxy_service,
client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
# Execute the actual scrubbing
threads = []
threads_key = '/ovs/framework/hosts/{0}/config|scrub_stack_threads'.format(
storagerouter.machine_id)
amount_threads = Configuration.get(
key=threads_key) if Configuration.exists(key=threads_key) else 2
if not isinstance(amount_threads, int):
error_messages.append(
'Amount of threads to spawn must be an integer for StorageRouter with ID {0}'
.format(storagerouter.machine_id))
return
amount_threads = max(amount_threads,
1) # Make sure amount_threads is at least 1
amount_threads = min(min(queue.qsize(), amount_threads),
20) # Make sure amount threads is max 20
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Spawning {2} threads for proxy service {3}'
.format(vpool.name, storagerouter.name, amount_threads,
alba_proxy_service))
for index in range(amount_threads):
thread = Thread(name='execute_scrub_{0}_{1}_{2}'.format(
vpool.guid, partition_guid, index),
target=GenericController._execute_scrub,
args=(queue, vpool, scrub_info, scrub_directory,
error_messages))
thread.start()
threads.append(thread)
for thread in threads:
thread.join()
# Delete the proxy again
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Removing service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_delete(scrub_directory)
if service_manager.has_service(alba_proxy_service,
client=client):
service_manager.stop_service(alba_proxy_service,
client=client)
service_manager.remove_service(alba_proxy_service,
client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Removed service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Removing service {2} failed'.format(
vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
GenericController._logger.exception(message)
def _execute_scrub(queue, vpool, scrub_info, scrub_dir, error_messages):
def _verify_mds_config(current_vdisk):
current_vdisk.invalidate_dynamics('info')
vdisk_configs = current_vdisk.info['metadata_backend_config']
if len(vdisk_configs) == 0:
raise RuntimeError('Could not load MDS configuration')
return vdisk_configs
storagerouter = scrub_info['storage_router']
partition_guid = scrub_info['partition_guid']
volatile_client = VolatileFactory.get_client()
backend_config_key = 'ovs/vpools/{0}/proxies/scrub/backend_config_{1}'.format(
vpool.guid, partition_guid)
try:
# Empty the queue with vDisks to scrub
with remote(storagerouter.ip, [VDisk]) as rem:
while True:
vdisk = None
vdisk_guid = queue.get(
False
) # Raises Empty Exception when queue is empty, so breaking the while True loop
volatile_key = 'ovs_scrubbing_vdisk_{0}'.format(vdisk_guid)
try:
# Check MDS master is local. Trigger MDS handover if necessary
vdisk = rem.VDisk(vdisk_guid)
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Started scrubbing at location {3}'
.format(vpool.name, storagerouter.name, vdisk.name,
scrub_dir))
configs = _verify_mds_config(current_vdisk=vdisk)
storagedriver = StorageDriverList.get_by_storagedriver_id(
vdisk.storagedriver_id)
if configs[0].get(
'ip') != storagedriver.storagerouter.ip:
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - MDS master is not local, trigger handover'
.format(vpool.name, storagerouter.name,
vdisk.name))
MDSServiceController.ensure_safety(
VDisk(vdisk_guid)
) # Do not use a remote VDisk instance here
configs = _verify_mds_config(current_vdisk=vdisk)
if configs[0].get(
'ip') != storagedriver.storagerouter.ip:
GenericController._logger.warning(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Skipping because master MDS still not local'
.format(vpool.name, storagerouter.name,
vdisk.name))
continue
# Check if vDisk is already being scrubbed
if volatile_client.add(key=volatile_key,
value=volatile_key,
time=24 * 60 * 60) is False:
GenericController._logger.warning(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Skipping because vDisk is already being scrubbed'
.format(vpool.name, storagerouter.name,
vdisk.name))
continue
# Do the actual scrubbing
with vdisk.storagedriver_client.make_locked_client(
str(vdisk.volume_id)) as locked_client:
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Retrieve and apply scrub work'
.format(vpool.name, storagerouter.name,
vdisk.name))
work_units = locked_client.get_scrubbing_workunits(
)
for work_unit in work_units:
res = locked_client.scrub(
work_unit=work_unit,
scratch_dir=scrub_dir,
log_sinks=[
LogHandler.get_sink_path(
'scrubber_{0}'.format(vpool.name),
allow_override=True,
forced_target_type='file')
],
backend_config=Configuration.
get_configuration_path(backend_config_key))
locked_client.apply_scrubbing_result(
scrubbing_work_result=res)
if work_units:
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - {3} work units successfully applied'
.format(vpool.name, storagerouter.name,
vdisk.name, len(work_units)))
else:
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - No scrubbing required'
.format(vpool.name, storagerouter.name,
vdisk.name))
except Exception:
if vdisk is None:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk with guid {2} could not be found'.format(
vpool.name, storagerouter.name, vdisk_guid)
else:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Scrubbing failed'.format(
vpool.name, storagerouter.name, vdisk.name)
error_messages.append(message)
GenericController._logger.exception(message)
finally:
# Remove vDisk from volatile memory
volatile_client.delete(volatile_key)
except Empty: # Raised when all items have been fetched from the queue
GenericController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Queue completely processed'
.format(vpool.name, storagerouter.name))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Scrubbing failed'.format(
vpool.name, storagerouter.name)
error_messages.append(message)
GenericController._logger.exception(message)
def test_node_config_checkup(self):
"""
Validates correct working of cluster registry checkup
"""
base_structure = {'1': {'vrouter_id': '1',
'message_host': '10.0.1.1',
'message_port': 1,
'xmlrpc_host': '10.0.0.1',
'xmlrpc_port': 2,
'failovercache_host': '10.0.1.1',
'failovercache_port': 3,
'network_server_uri': 'tcp://10.0.1.1:4',
'node_distance_map': None},
'2': {'vrouter_id': '2',
'message_host': '10.0.1.2',
'message_port': 1,
'xmlrpc_host': '10.0.0.2',
'xmlrpc_port': 2,
'failovercache_host': '10.0.1.2',
'failovercache_port': 3,
'network_server_uri': 'tcp://10.0.1.2:4',
'node_distance_map': None}}
def _validate_node_config(_config, _expected_map):
expected = copy.deepcopy(base_structure[_config.vrouter_id])
expected['node_distance_map'] = _expected_map[_config.vrouter_id]
self.assertDictEqual(expected, {'vrouter_id': _config.vrouter_id,
'message_host': _config.message_host,
'message_port': _config.message_port,
'xmlrpc_host': _config.xmlrpc_host,
'xmlrpc_port': _config.xmlrpc_port,
'failovercache_host': _config.failovercache_host,
'failovercache_port': _config.failovercache_port,
'network_server_uri': _config.network_server_uri,
'node_distance_map': _config.node_distance_map})
structure = DalHelper.build_dal_structure(
{'vpools': [1],
'domains': [1, 2],
'storagerouters': [1, 2],
'storagedrivers': [(1, 1, 1), (2, 1, 2)], # (<id>, <vpool_id>, <storagerouter_id>)
'storagerouter_domains': [(1, 1, 1, False), (2, 2, 1, False)]} # (id>, <storagerouter_id>, <domain_id>, <backup>)
)
storagerouters = structure['storagerouters']
vpool = structure['vpools'][1]
arakoon_installer = ArakoonInstaller(cluster_name='voldrv')
arakoon_installer.create_cluster(cluster_type=ServiceType.ARAKOON_CLUSTER_TYPES.SD,
ip=storagerouters[1].ip,
base_dir='/tmp',
log_sinks=LogHandler.get_sink_path('arakoon-server_voldrv'),
crash_log_sinks=LogHandler.get_sink_path('arakoon-server-crash_voldrv'))
# Initial run, it will now be configured
StorageRouterClient.node_config_recordings = []
result = StorageDriverController.cluster_registry_checkup()
self.assertDictEqual(result, {vpool.guid: {'success': True,
'changes': True}})
self.assertListEqual(sorted(StorageRouterClient.node_config_recordings), ['1', '2'])
expected_map = {'1': {'2': StorageDriver.DISTANCES.NEAR},
'2': {'1': StorageDriver.DISTANCES.NEAR}}
configs = vpool.clusterregistry_client.get_node_configs()
for config in configs:
_validate_node_config(config, expected_map)
# Running it again should not change anything
StorageRouterClient.node_config_recordings = []
result = StorageDriverController.cluster_registry_checkup()
self.assertDictEqual(result, {vpool.guid: {'success': True,
'changes': False}})
self.assertListEqual(sorted(StorageRouterClient.node_config_recordings), [])
expected_map = {'1': {'2': StorageDriver.DISTANCES.NEAR},
'2': {'1': StorageDriver.DISTANCES.NEAR}}
configs = vpool.clusterregistry_client.get_node_configs()
for config in configs:
_validate_node_config(config, expected_map)
# Validate some error paths
domain = structure['domains'][2]
junction = structure['storagerouters'][1].domains[0]
junction.domain = domain
junction.save()
vpool_config_path = 'file://opt/OpenvStorage/config/framework.json?key=/ovs/vpools/{0}/hosts/1/config'.format(vpool.guid)
StorageRouterClient.exceptions['server_revision'] = {vpool_config_path: Exception('ClusterNotReachableException')}
StorageRouterClient.node_config_recordings = []
result = StorageDriverController.cluster_registry_checkup()
self.assertDictEqual(result, {vpool.guid: {'success': True,
'changes': True}})
self.assertListEqual(sorted(StorageRouterClient.node_config_recordings), ['2'])
expected_map = {'1': {'2': StorageDriver.DISTANCES.INFINITE},
'2': {'1': StorageDriver.DISTANCES.INFINITE}}
configs = vpool.clusterregistry_client.get_node_configs()
for config in configs:
_validate_node_config(config, expected_map)
def create_cluster(cluster_name, cluster_type, ip, base_dir, plugins=None, locked=True, internal=True, filesystem=False, ports=None):
"""
Always creates a cluster but marks it's usage according to the internal flag
:param cluster_name: Name of the cluster
:type cluster_name: str
:param cluster_type: Type of the cluster (See ServiceType.ARAKOON_CLUSTER_TYPES)
:type cluster_type: str
:param ip: IP address of the first node of the new cluster
:type ip: str
:param base_dir: Base directory that should contain the data and tlogs
:type base_dir: str
:param plugins: Plugins that should be added to the configuration file
:type plugins: dict
:param locked: Indicates whether the create should run in a locked context (e.g. to prevent port conflicts)
:type locked: bool
:param internal: Is cluster internally managed by OVS
:type internal: bool
:param filesystem: Indicates whether the configuration should be on the filesystem or in a configuration cluster
:type filesystem: bool
:param ports: A list of ports to be used for this cluster's node
:type ports: list
:return: Ports used by arakoon cluster
:rtype: dict
"""
if cluster_type not in ServiceType.ARAKOON_CLUSTER_TYPES:
raise ValueError('Cluster type {0} is not supported. Please choose from {1}'.format(cluster_type, ', '.join(ServiceType.ARAKOON_CLUSTER_TYPES)))
client = SSHClient(ip, username=ArakoonInstaller.SSHCLIENT_USER)
if filesystem is True:
exists = client.file_exists(ArakoonClusterConfig.CONFIG_FILE.format(cluster_name))
else:
exists = Configuration.dir_exists('/ovs/arakoon/{0}'.format(cluster_name))
if exists is True:
raise ValueError('An Arakoon cluster with name "{0}" already exists'.format(cluster_name))
ArakoonInstaller._logger.debug('Creating cluster {0} on {1}'.format(cluster_name, ip))
node_name = System.get_my_machine_id(client)
base_dir = base_dir.rstrip('/')
home_dir = ArakoonInstaller.ARAKOON_HOME_DIR.format(base_dir, cluster_name)
tlog_dir = ArakoonInstaller.ARAKOON_TLOG_DIR.format(base_dir, cluster_name)
ArakoonInstaller.clean_leftover_arakoon_data(ip, [home_dir, tlog_dir])
port_mutex = None
try:
if locked is True:
from ovs.extensions.generic.volatilemutex import volatile_mutex
port_mutex = volatile_mutex('arakoon_install_ports_{0}'.format(ip))
port_mutex.acquire(wait=60)
if ports is None:
ports = ArakoonInstaller._get_free_ports(client)
config = ArakoonClusterConfig(cluster_name, filesystem, plugins.keys() if plugins is not None else None)
config.nodes.append(ArakoonNodeConfig(name=node_name,
ip=ip,
client_port=ports[0],
messaging_port=ports[1],
log_sinks=LogHandler.get_sink_path('arakoon_server'),
crash_log_sinks=LogHandler.get_sink_path('arakoon_server_crash'),
home=home_dir,
tlog_dir=tlog_dir))
metadata = {'internal': internal,
'cluster_name': cluster_name,
'cluster_type': cluster_type.upper(),
'in_use': False}
service_metadata = ArakoonInstaller._deploy(config=config,
filesystem=filesystem,
plugins=plugins.values() if plugins is not None else None,
delay_service_registration=cluster_type == ServiceType.ARAKOON_CLUSTER_TYPES.CFG)[ip]
finally:
if port_mutex is not None:
port_mutex.release()
ArakoonInstaller._logger.debug('Creating cluster {0} on {1} completed'.format(cluster_name, ip))
return {'metadata': metadata,
'client_port': ports[0],
'messaging_port': ports[1],
'service_metadata': service_metadata}
def promote_node(cluster_ip, master_ip, ip_client_map, unique_id,
configure_memcached, configure_rabbitmq):
"""
Promotes a given node
"""
from ovs.dal.lists.storagerouterlist import StorageRouterList
from ovs.dal.lists.servicetypelist import ServiceTypeList
from ovs.dal.lists.servicelist import ServiceList
from ovs.dal.hybrids.service import Service
Toolbox.log(logger=NodeTypeController._logger,
messages='Promoting node',
title=True)
service_manager = ServiceFactory.get_manager()
if configure_memcached is True:
if NodeTypeController._validate_local_memcache_servers(
ip_client_map) is False:
raise RuntimeError(
'Not all memcache nodes can be reached which is required for promoting a node.'
)
target_client = ip_client_map[cluster_ip]
machine_id = System.get_my_machine_id(target_client)
node_name, _ = target_client.get_hostname()
master_client = ip_client_map[master_ip]
storagerouter = StorageRouterList.get_by_machine_id(unique_id)
storagerouter.node_type = 'MASTER'
storagerouter.save()
external_config = Configuration.get('/ovs/framework/external_config')
if external_config is None:
Toolbox.log(logger=NodeTypeController._logger,
messages='Joining Arakoon configuration cluster')
arakoon_installer = ArakoonInstaller(cluster_name='config')
arakoon_installer.load(ip=master_ip)
arakoon_installer.extend_cluster(
new_ip=cluster_ip,
base_dir=Configuration.get('/ovs/framework/paths|ovsdb'),
log_sinks=LogHandler.get_sink_path('arakoon-server_config'),
crash_log_sinks=LogHandler.get_sink_path(
'arakoon-server-crash_config'))
arakoon_installer.restart_cluster_after_extending(
new_ip=cluster_ip)
service_manager.register_service(
node_name=machine_id,
service_metadata=arakoon_installer.service_metadata[cluster_ip]
)
# Find other (arakoon) master nodes
arakoon_cluster_name = str(
Configuration.get('/ovs/framework/arakoon_clusters|ovsdb'))
arakoon_metadata = ArakoonInstaller.get_arakoon_metadata_by_cluster_name(
cluster_name=arakoon_cluster_name)
config = ArakoonClusterConfig(cluster_id=arakoon_cluster_name)
master_node_ips = [node.ip for node in config.nodes]
if cluster_ip in master_node_ips:
master_node_ips.remove(cluster_ip)
if len(master_node_ips) == 0:
raise RuntimeError(
'There should be at least one other master node')
arakoon_ports = []
if arakoon_metadata['internal'] is True:
Toolbox.log(logger=NodeTypeController._logger,
messages='Joining Arakoon OVS DB cluster')
arakoon_installer = ArakoonInstaller(
cluster_name=arakoon_cluster_name)
arakoon_installer.load()
arakoon_installer.extend_cluster(
new_ip=cluster_ip,
base_dir=Configuration.get('/ovs/framework/paths|ovsdb'),
log_sinks=LogHandler.get_sink_path(
'arakoon-server_{0}'.format(arakoon_cluster_name)),
crash_log_sinks=LogHandler.get_sink_path(
'arakoon-server-crash_{0}'.format(arakoon_cluster_name)))
arakoon_installer.restart_cluster_after_extending(
new_ip=cluster_ip)
arakoon_ports = arakoon_installer.ports[cluster_ip]
if configure_memcached is True:
NodeTypeController.configure_memcached(
client=target_client, logger=NodeTypeController._logger)
NodeTypeController.add_services(client=target_client,
node_type='master',
logger=NodeTypeController._logger)
Toolbox.log(logger=NodeTypeController._logger,
messages='Update configurations')
if configure_memcached is True:
endpoints = Configuration.get('/ovs/framework/memcache|endpoints')
endpoint = '{0}:11211'.format(cluster_ip)
if endpoint not in endpoints:
endpoints.append(endpoint)
Configuration.set('/ovs/framework/memcache|endpoints',
endpoints)
if configure_rabbitmq is True:
endpoints = Configuration.get(
'/ovs/framework/messagequeue|endpoints')
endpoint = '{0}:5672'.format(cluster_ip)
if endpoint not in endpoints:
endpoints.append(endpoint)
Configuration.set('/ovs/framework/messagequeue|endpoints',
endpoints)
if arakoon_metadata['internal'] is True:
Toolbox.log(logger=NodeTypeController._logger,
messages='Restarting master node services')
PersistentFactory.store = None
VolatileFactory.store = None
if 'arakoon-ovsdb' not in [
s.name for s in ServiceList.get_services() if
s.is_internal is False or s.storagerouter.ip == cluster_ip
]:
service = Service()
service.name = 'arakoon-ovsdb'
service.type = ServiceTypeList.get_by_name(
ServiceType.SERVICE_TYPES.ARAKOON)
service.ports = arakoon_ports
service.storagerouter = storagerouter
service.save()
if configure_rabbitmq is True:
NodeTypeController.configure_rabbitmq(
client=target_client, logger=NodeTypeController._logger)
# Copy rabbitmq cookie
rabbitmq_cookie_file = '/var/lib/rabbitmq/.erlang.cookie'
Toolbox.log(logger=NodeTypeController._logger,
messages='Copying RabbitMQ cookie')
contents = master_client.file_read(rabbitmq_cookie_file)
master_hostname, _ = master_client.get_hostname()
target_client.dir_create(os.path.dirname(rabbitmq_cookie_file))
target_client.file_write(rabbitmq_cookie_file, contents)
target_client.file_chmod(rabbitmq_cookie_file, mode=0400)
target_client.run(['rabbitmq-server', '-detached'])
time.sleep(5)
target_client.run(['rabbitmqctl', 'stop_app'])
time.sleep(5)
target_client.run([
'rabbitmqctl', 'join_cluster',
'rabbit@{0}'.format(master_hostname)
])
time.sleep(5)
target_client.run(['rabbitmqctl', 'stop'])
time.sleep(5)
# Enable HA for the rabbitMQ queues
Toolbox.change_service_state(target_client, 'rabbitmq-server',
'start', NodeTypeController._logger)
NodeTypeController.check_rabbitmq_and_enable_ha_mode(
client=target_client, logger=NodeTypeController._logger)
NodeTypeController._configure_amqp_to_volumedriver()
Toolbox.log(logger=NodeTypeController._logger,
messages='Starting services')
services = ['memcached', 'arakoon-ovsdb', 'rabbitmq-server']
if arakoon_metadata['internal'] is True:
services.remove('arakoon-ovsdb')
for service in services:
if service_manager.has_service(service, client=target_client):
Toolbox.change_service_state(target_client, service, 'start',
NodeTypeController._logger)
Toolbox.log(logger=NodeTypeController._logger,
messages='Restarting services')
NodeTypeController.restart_framework_and_memcache_services(
clients=ip_client_map, logger=NodeTypeController._logger)
if Toolbox.run_hooks(component='nodetype',
sub_component='promote',
logger=NodeTypeController._logger,
cluster_ip=cluster_ip,
master_ip=master_ip):
Toolbox.log(logger=NodeTypeController._logger,
messages='Restarting services')
NodeTypeController.restart_framework_and_memcache_services(
clients=ip_client_map, logger=NodeTypeController._logger)
if NodeTypeController.avahi_installed(
client=target_client,
logger=NodeTypeController._logger) is True:
NodeTypeController.configure_avahi(
client=target_client,
node_name=node_name,
node_type='master',
logger=NodeTypeController._logger)
Configuration.set('/ovs/framework/hosts/{0}/type'.format(machine_id),
'MASTER')
target_client.run(
['chown', '-R', 'ovs:ovs', '/opt/OpenvStorage/config'])
Configuration.set(
'/ovs/framework/hosts/{0}/promotecompleted'.format(machine_id),
True)
if target_client.file_exists('/tmp/ovs_rollback'):
target_client.file_delete('/tmp/ovs_rollback')
Toolbox.log(logger=NodeTypeController._logger,
messages='Promote complete')
def execute_scrub_work(queue, vpool, scrub_info, error_messages):
"""
Executes scrub work for a given vDisk queue and vPool, based on scrub_info
:param queue: a Queue with vDisk guids that need to be scrubbed (they should only be member of a single vPool)
:type queue: Queue
:param vpool: the vPool object of the vDisks
:type vpool: VPool
:param scrub_info: A dict containing scrub information: `scrub_path` with the path where to scrub and `storage_router` with the StorageRouter
that needs to do the work
:type scrub_info: dict
:param error_messages: A list of error messages to be filled
:type error_messages: list
:return: a list of error messages
:rtype: list
"""
def _verify_mds_config(current_vdisk):
current_vdisk.invalidate_dynamics('info')
vdisk_configs = current_vdisk.info['metadata_backend_config']
if len(vdisk_configs) == 0:
raise RuntimeError('Could not load MDS configuration')
return vdisk_configs
client = None
lock_time = 5 * 60
storagerouter = scrub_info['storage_router']
scrub_directory = '{0}/scrub_work_{1}_{2}'.format(
scrub_info['scrub_path'], vpool.name, storagerouter.name)
scrub_config_key = 'ovs/vpools/{0}/proxies/scrub/scrub_config_{1}'.format(
vpool.guid, storagerouter.guid)
backend_config_key = 'ovs/vpools/{0}/proxies/scrub/backend_config_{1}'.format(
vpool.guid, storagerouter.guid)
alba_proxy_service = 'ovs-albaproxy_{0}_{1}_scrub'.format(
vpool.name, storagerouter.name)
# Deploy a proxy
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Deploying ALBA proxy {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_create(scrub_directory)
client.dir_chmod(
scrub_directory, 0777
) # Celery task executed by 'ovs' user and should be able to write in it
if ServiceManager.has_service(
name=alba_proxy_service, client=client
) is True and ServiceManager.get_service_status(
name=alba_proxy_service, client=client) is True:
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Re-using existing proxy service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
scrub_config = Configuration.get(scrub_config_key)
else:
machine_id = System.get_my_machine_id(client)
port_range = Configuration.get(
'/ovs/framework/hosts/{0}/ports|storagedriver'.format(
machine_id))
port = System.get_free_ports(selected_range=port_range,
nr=1,
client=client)[0]
# Scrub config
# {u'albamgr_cfg_url': u'arakoon://config/ovs/vpools/71e2f717-f270-4a41-bbb0-d4c8c084d43e/proxies/64759516-3471-4321-b912-fb424568fc5b/config/abm?ini=%2Fopt%2FOpenvStorage%2Fconfig%2Farakoon_cacc.ini',
# u'fragment_cache': [u'none'],
# u'ips': [u'127.0.0.1'],
# u'log_level': u'info',
# u'manifest_cache_size': 17179869184,
# u'port': 0,
# u'transport': u'tcp'}
# Backend config
# {u'alba_connection_host': u'10.100.193.155',
# u'alba_connection_port': 26204,
# u'alba_connection_preset': u'preset',
# u'alba_connection_timeout': 15,
# u'alba_connection_transport': u'TCP',
# u'backend_interface_retries_on_error': 5,
# u'backend_interface_retry_backoff_multiplier': 2.0,
# u'backend_interface_retry_interval_secs': 1,
# u'backend_type': u'ALBA'}
scrub_config = Configuration.get(
'ovs/vpools/{0}/proxies/scrub/generic_scrub'.format(
vpool.guid))
scrub_config['port'] = port
scrub_config['transport'] = 'tcp'
Configuration.set(scrub_config_key,
json.dumps(scrub_config, indent=4),
raw=True)
params = {
'VPOOL_NAME':
vpool.name,
'LOG_SINK':
LogHandler.get_sink_path('alba_proxy'),
'CONFIG_PATH':
Configuration.get_configuration_path(scrub_config_key)
}
ServiceManager.add_service(name='ovs-albaproxy',
params=params,
client=client,
target_name=alba_proxy_service)
ServiceManager.start_service(name=alba_proxy_service,
client=client)
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Deployed ALBA proxy {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
backend_config = Configuration.get(
'ovs/vpools/{0}/hosts/{1}/config'.format(
vpool.guid, vpool.storagedrivers[0].storagedriver_id
))['backend_connection_manager']
backend_config['alba_connection_host'] = '127.0.0.1'
backend_config['alba_connection_port'] = scrub_config['port']
Configuration.set(
backend_config_key,
json.dumps({"backend_connection_manager": backend_config},
indent=4),
raw=True)
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - An error occurred deploying ALBA proxy {2}'.format(
vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
if client is not None and ServiceManager.has_service(
name=alba_proxy_service, client=client) is True:
if ServiceManager.get_service_status(name=alba_proxy_service,
client=client) is True:
ServiceManager.stop_service(name=alba_proxy_service,
client=client)
ServiceManager.remove_service(name=alba_proxy_service,
client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
try:
# Empty the queue with vDisks to scrub
with remote(storagerouter.ip, [VDisk]) as rem:
while True:
vdisk = None
vdisk_guid = queue.get(False)
try:
# Check MDS master is local. Trigger MDS handover if necessary
vdisk = rem.VDisk(vdisk_guid)
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Started scrubbing at location {3}'
.format(vpool.name, storagerouter.name, vdisk.name,
scrub_directory))
configs = _verify_mds_config(current_vdisk=vdisk)
storagedriver = StorageDriverList.get_by_storagedriver_id(
vdisk.storagedriver_id)
if configs[0].get(
'ip') != storagedriver.storagerouter.ip:
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - MDS master is not local, trigger handover'
.format(vpool.name, storagerouter.name,
vdisk.name))
MDSServiceController.ensure_safety(
VDisk(vdisk_guid)
) # Do not use a remote VDisk instance here
configs = _verify_mds_config(current_vdisk=vdisk)
if configs[0].get(
'ip') != storagedriver.storagerouter.ip:
ScheduledTaskController._logger.warning(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Skipping because master MDS still not local'
.format(vpool.name, storagerouter.name,
vdisk.name))
continue
# Do the actual scrubbing
with vdisk.storagedriver_client.make_locked_client(
str(vdisk.volume_id)) as locked_client:
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Retrieve and apply scrub work'
.format(vpool.name, storagerouter.name,
vdisk.name))
work_units = locked_client.get_scrubbing_workunits(
)
for work_unit in work_units:
res = locked_client.scrub(
work_unit=work_unit,
scratch_dir=scrub_directory,
log_sinks=[
LogHandler.get_sink_path(
'scrubber', allow_override=True)
],
backend_config=Configuration.
get_configuration_path(backend_config_key))
locked_client.apply_scrubbing_result(
scrubbing_work_result=res)
if work_units:
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - {3} work units successfully applied'
.format(vpool.name, storagerouter.name,
vdisk.name, len(work_units)))
else:
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - No scrubbing required'
.format(vpool.name, storagerouter.name,
vdisk.name))
except Exception:
if vdisk is None:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk with guid {2} could not be found'.format(
vpool.name, storagerouter.name, vdisk_guid)
else:
message = 'Scrubber - vPool {0} - StorageRouter {1} - vDisk {2} - Scrubbing failed'.format(
vpool.name, storagerouter.name, vdisk.name)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
except Empty: # Raised when all items have been fetched from the queue
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Queue completely processed'
.format(vpool.name, storagerouter.name))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Scrubbing failed'.format(
vpool.name, storagerouter.name)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
# Delete the proxy again
try:
with file_mutex(name='ovs_albaproxy_scrub', wait=lock_time):
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Removing service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
client = SSHClient(storagerouter, 'root')
client.dir_delete(scrub_directory)
if ServiceManager.has_service(alba_proxy_service,
client=client):
ServiceManager.stop_service(alba_proxy_service,
client=client)
ServiceManager.remove_service(alba_proxy_service,
client=client)
if Configuration.exists(scrub_config_key):
Configuration.delete(scrub_config_key)
ScheduledTaskController._logger.info(
'Scrubber - vPool {0} - StorageRouter {1} - Removed service {2}'
.format(vpool.name, storagerouter.name,
alba_proxy_service))
except Exception:
message = 'Scrubber - vPool {0} - StorageRouter {1} - Removing service {2} failed'.format(
vpool.name, storagerouter.name, alba_proxy_service)
error_messages.append(message)
ScheduledTaskController._logger.exception(message)
