def define_clients():
"""
define the clients (nodeACLs) to the gateway definition
"""
# Client configurations (NodeACL's)
for client_iqn in config.config['clients']:
client_metadata = config.config['clients'][client_iqn]
client_chap = CHAP(client_metadata['auth']['chap'])
image_list = client_metadata['luns'].keys()
chap_str = client_chap.chap_str
if client_chap.error:
logger.debug("Password decode issue : "
"{}".format(client_chap.error_msg))
halt("Unable to decode password for "
"{}".format(client_iqn))
client = GWClient(logger,
client_iqn,
image_list,
chap_str)
client.manage('present') # ensure the client exists
def _update_client(**kwargs):
"""
Handler function to apply the changes to a specific client definition
:param args:
"""
# convert the comma separated image_list string into a list for GWClient
if kwargs['images']:
image_list = str(kwargs['images']).split(',')
else:
image_list = []
client = GWClient(logger, kwargs['client_iqn'], image_list, kwargs['chap'])
if client.error:
logger.error("Invalid client request - {}".format(client.error_msg))
return 400, "Invalid client request"
client.manage('present', committer=kwargs['committing_host'])
if client.error:
logger.error("client update failed on {} : "
"{}".format(kwargs['client_iqn'], client.error_msg))
return 500, "Client update failed"
else:
config.refresh()
return 200, "Client configured successfully"
def manage_client(client_iqn):
"""
Manage a client definition to the local gateway
Internal Use ONLY
:param client_iqn: iscsi name for the client
**RESTRICTED**
"""
if request.method == 'GET':
if client_iqn in config.config['clients']:
return jsonify(config.config["clients"][client_iqn]), 200
else:
return jsonify(message="Client does not exist"), 404
elif request.method == 'PUT':
try:
valid_iqn = normalize_wwn(['iqn'], client_iqn)
except RTSLibError:
return jsonify(message="'{}' is not a valid name for "
"iSCSI".format(client_iqn)), 400
committing_host = request.form['committing_host']
image_list = request.form.get('image_list', '')
chap = request.form.get('chap', '')
status_code, status_text = _update_client(client_iqn=client_iqn,
images=image_list,
chap=chap,
committing_host=committing_host)
logger.debug("client create: {}".format(status_code))
logger.debug("client create: {}".format(status_text))
return jsonify(message=status_text), status_code
else:
# DELETE request
committing_host = request.form['committing_host']
# Make sure the delete request is for a client we have defined
if client_iqn in config.config['clients'].keys():
client = GWClient(logger, client_iqn, '', '')
client.manage('absent', committer=committing_host)
if client.error:
logger.error("Failed to remove client : "
"{}".format(client.error_msg))
return jsonify(message="Failed to remove client"), 500
else:
if committing_host == this_host():
config.refresh()
return jsonify(message="Client deleted ok"), 200
else:
logger.error("Delete request for non existent client!")
return jsonify(message="Client does not exist!"), 404
def ansible_main():
fields = {
"client_iqn": {
"required": True,
"type": "str"
},
"image_list": {
"required": True,
"type": "str"
},
"chap": {
"required": True,
"type": "str"
},
"state": {
"required": True,
"choices": ['present', 'absent'],
"type": "str"
},
}
module = AnsibleModule(argument_spec=fields, supports_check_mode=False)
client_iqn = module.params['client_iqn']
if module.params['image_list']:
image_list = module.params['image_list'].split(',')
else:
image_list = []
chap = module.params['chap']
desired_state = module.params['state']
logger.info("START - Client configuration started : {}".format(client_iqn))
# The client is defined using the GWClient class. This class handles client attribute updates,
# rados configuration object updates and LIO settings. Since the logic is external to this
# custom module, clients can be created/deleted by other methods in the same manner.
client = GWClient(logger, client_iqn, image_list, chap)
if client.error:
module.fail_json(msg=client.error_msg)
client.manage(desired_state)
if client.error:
module.fail_json(msg=client.error_msg)
logger.info(
"END - Client configuration complete - {} changes made".format(
client.change_count))
changes_made = True if client.change_count > 0 else False
module.exit_json(changed=changes_made,
meta={
"msg":
"Client definition completed {} "
"changes made".format(client.change_count)
})
def update_client(self, client_iqn, image_list):
client = GWClient(self.logger, client_iqn, image_list, '')
client.manage('reconfigure')
# grab the client's metadata from the config (needed by setup_luns)
client.metadata = self.config.config['clients'][client_iqn]
client.setup_luns()
if client.error:
self._set_error(client.error_msg)
def ansible_main():
fields = {
"client_iqn": {"required": True, "type": "str"},
"image_list": {"required": True, "type": "str"},
"chap": {"required": True, "type": "str"},
"state": {
"required": True,
"choices": ['present', 'absent'],
"type": "str"
},
}
module = AnsibleModule(argument_spec=fields, # noqa F405
supports_check_mode=False)
client_iqn = module.params['client_iqn']
if module.params['image_list']:
image_list = module.params['image_list'].split(',')
else:
image_list = []
chap = module.params['chap']
desired_state = module.params['state']
logger.info("START - Client configuration started : {}".format(client_iqn))
# The client is defined using the GWClient class. This class handles
# client attribute updates, rados configuration object updates and LIO
# settings. Since the logic is external to this custom module, clients
# can be created/deleted by other methods in the same manner.
client = GWClient(logger, client_iqn, image_list, chap)
if client.error:
module.fail_json(msg=client.error_msg)
client.manage(desired_state)
if client.error:
module.fail_json(msg=client.error_msg)
logger.info("END - Client configuration complete - {} "
"changes made".format(client.change_count))
changes_made = True if client.change_count > 0 else False
module.exit_json(changed=changes_made,
meta={"msg": "Client definition completed {} "
"changes made".format(client.change_count)})
def activate(self):
disk = self.config.config['disks'].get(self.config_key, None)
if not disk:
raise CephiSCSIError("Image {} not found.".format(self.image))
wwn = disk.get('wwn', None)
if not wwn:
raise CephiSCSIError("LUN {} missing wwn".format(self.image))
# re-add backend storage object
so = self.lio_stg_object()
if not so:
self.add_dev_to_lio(wwn)
if self.error:
raise CephiSCSIError("LUN activate failure - {}".format(
self.error_msg))
# re-add LUN to target
local_gw = this_host()
targets_items = [
item for item in self.config.config['targets'].items()
if self.config_key in item[1]['disks']
and local_gw in item[1]['portals']
]
for target_iqn, target in targets_items:
ip_list = target['ip_list']
# Add the mapping for the lun to ensure the block device is
# present on all TPG's
gateway = GWTarget(self.logger, target_iqn, ip_list)
gateway.manage('map')
if gateway.error:
raise CephiSCSIError("LUN mapping failed - {}".format(
gateway.error_msg))
# re-map LUN to hosts
client_err = ''
for client_iqn in target['clients']:
client_metadata = target['clients'][client_iqn]
if client_metadata.get('group_name', ''):
continue
image_list = list(client_metadata['luns'].keys())
if self.config_key not in image_list:
continue
client_chap = CHAP(client_metadata['auth']['chap'])
chap_str = client_chap.chap_str
if client_chap.error:
raise CephiSCSIError("Password decode issue : "
"{}".format(client_chap.error_msg))
client_chap_mutual = CHAP(
client_metadata['auth']['chap_mutual'])
chap_mutual_str = client_chap_mutual.chap_str
if client_chap_mutual.error:
raise CephiSCSIError("Password decode issue : "
"{}".format(
client_chap_mutual.error_msg))
client = GWClient(self.logger, client_iqn, image_list,
chap_str, chap_mutual_str, target_iqn)
client.manage('present')
if client.error:
client_err = "LUN mapping failed {} - {}".format(
client_iqn, client.error_msg)
# re-map LUN to host groups
for group_name in target['groups']:
host_group = target['groups'][group_name]
members = host_group.get('members')
disks = host_group.get('disks').keys()
if self.config_key not in disks:
continue
group = Group(self.logger, target_iqn, group_name, members,
disks)
group.apply()
if group.error:
client_err = "LUN mapping failed {} - {}".format(
group_name, group.error_msg)
if client_err:
raise CephiSCSIError(client_err)
