def target(target_iqn=None):
"""
Handle the definition of the iscsi target name
The target is added to the configuration object, seeding the configuration
for ALL gateways
:param target_iqn: IQN of the target each gateway will use
**RESTRICTED**
"""
if request.method == 'PUT':
gateway_ip_list = []
target = GWTarget(logger, str(target_iqn), gateway_ip_list)
if target.error:
logger.error("Unable to create an instance of the GWTarget class")
return jsonify(message="GWTarget problem - "
"{}".format(target.error_msg)), 500
target.manage('init')
if target.error:
logger.error("Failure during gateway 'init' processing")
return jsonify(
message="iscsi target 'init' process failed "
"for {} - {}".format(target_iqn, target.error_msg)), 500
return jsonify(message="Target defined successfully"), 200
else:
# return unrecognised request
return jsonify(message="Invalid method ({}) to target "
"API".format(request.method)), 405
def define_gateway():
"""
define the iSCSI target and tpgs
:return: (object) gateway object
"""
gw_ip_list = config.config['gateways'].get('ip_list', None)
gw_iqn = config.config['gateways'].get('iqn', None)
# Gateway Definition : Handle the creation of the Target/TPG(s) and Portals
# Although we create the tpgs, we flick the enable_portal flag off so the
# enabled tpg will not have an outside IP address. This prevents clients
# from logging in too early, failing and giving up because the nodeACL
# hasn't been defined yet (yes Windows I'm looking at you!)
# first check if there are tpgs already in LIO (True) - this would indicate
# a restart or reload call has been made. If the tpg count is 0, this is a
# boot time request
gateway = GWTarget(logger,
gw_iqn,
gw_ip_list,
enable_portal=portals_active())
if gateway.error:
halt("Error initializing iSCSI target: {}".format(gateway.error_msg))
gateway.manage('target')
if gateway.error:
halt("Error creating the iSCSI target (target, TPGs, Portals): "
"{}".format(gateway.error_msg))
return gateway
def ansible_main():
# Configures the gateway on the host. All images defined are added to
# the default tpg for later allocation to clients
fields = {
"gateway_iqn": {
"required": True,
"type": "str"
},
"gateway_ip_list": {
"required": True
}, # "type": "list"},
"mode": {
"required": True,
"choices": ['target', 'map']
}
}
module = AnsibleModule(
argument_spec=fields, # noqa: F405
supports_check_mode=False)
cfg = Config(logger)
if cfg.config['version'] > 3:
module.fail_json(msg="Unsupported iscsigws.yml/iscsi-gws.yml setting "
"detected. Remove depreciated iSCSI target, LUN, "
"client, and gateway settings from "
"iscsigws.yml/iscsi-gws.yml. See "
"iscsigws.yml.sample for list of supported "
"settings")
gateway_iqn = module.params['gateway_iqn']
gateway_ip_list = module.params['gateway_ip_list'].split(',')
mode = module.params['mode']
if not valid_ip(gateway_ip_list):
module.fail_json(msg="Invalid gateway IP address(es) provided - port "
"22 check failed ({})".format(gateway_ip_list))
logger.info("START - GATEWAY configuration started - mode {}".format(mode))
gateway = GWTarget(logger, gateway_iqn, gateway_ip_list)
if gateway.error:
logger.critical("(ansible_main) Gateway init failed - "
"{}".format(gateway.error_msg))
module.fail_json(msg="iSCSI gateway initialisation failed "
"({})".format(gateway.error_msg))
gateway.manage(mode)
if gateway.error:
logger.critical("(main) Gateway creation or load failed, "
"unable to continue")
module.fail_json(msg="iSCSI gateway creation/load failure "
"({})".format(gateway.error_msg))
logger.info("END - GATEWAY configuration complete")
module.exit_json(changed=gateway.changes_made,
meta={"msg": "Gateway setup complete"})
def ansible_main():
# Configures the gateway on the host. All images defined are added to
# the default tpg for later allocation to clients
fields = {"gateway_iqn": {"required": True, "type": "str"},
"gateway_ip_list": {"required": True}, # "type": "list"},
"mode": {
"required": True,
"choices": ['target', 'map']
}
}
module = AnsibleModule(argument_spec=fields,
supports_check_mode=False)
gateway_iqn = module.params['gateway_iqn']
gateway_ip_list = module.params['gateway_ip_list'].split(',')
mode = module.params['mode']
if not valid_ip(gateway_ip_list):
module.fail_json(msg="Invalid gateway IP address(es) provided - port 22 check failed ({})".format(gateway_ip_list))
logger.info("START - GATEWAY configuration started in mode {}".format(mode))
gateway = GWTarget(logger, gateway_iqn, gateway_ip_list)
if gateway.error:
logger.critical("(ansible_main) Gateway init failed - {}".format(gateway.error_msg))
module.fail_json(msg="iSCSI gateway initialisation failed ({})".format(gateway.error_msg))
gateway.manage(mode)
if gateway.error:
logger.critical("(main) Gateway creation or load failed, unable to continue")
module.fail_json(msg="iSCSI gateway creation/load failure ({})".format(gateway.error_msg))
logger.info("END - GATEWAY configuration complete")
module.exit_json(changed=gateway.changes_made, meta={"msg": "Gateway setup complete"})
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)
def manage_disk(image_id):
"""
Manage a disk definition on the local gateway
Internal Use ONLY
Disks can be created and added to each gateway, or deleted through this
call
:param image_id: (str) of the form pool.image_name
**RESTRICTED**
"""
if request.method == 'GET':
if image_id in config.config['disks']:
return jsonify(config.config["disks"][image_id]), 200
else:
return jsonify(message="rbd image {} not "
"found".format(image_id)), 404
elif request.method == 'PUT':
# A put is for either a create or a resize
# put('http://127.0.0.1:5000/api/disk/rbd.ansible3',data={'pool': 'rbd','size': '3G','owner':'ceph-1'})
rqst_fields = set(request.form.keys())
if rqst_fields.issuperset(("pool", "size", "owner", "mode")):
image_name = str(image_id.split('.', 1)[1])
lun = LUN(logger, str(request.form['pool']), image_name,
str(request.form['size']), str(request.form['owner']))
if lun.error:
logger.error("Unable to create a LUN instance"
" : {}".format(lun.error_msg))
return jsonify(message="Unable to establish LUN instance"), 500
lun.allocate()
if lun.error:
logger.error("LUN alloc problem - {}".format(lun.error_msg))
return jsonify(message="LUN allocation failure"), 500
if request.form['mode'] == 'create':
# new disk is allocated, so refresh the local config object
config.refresh()
iqn = config.config['gateways']['iqn']
ip_list = config.config['gateways']['ip_list']
# Add the mapping for the lun to ensure the block device is
# present on all TPG's
gateway = GWTarget(logger, iqn, ip_list)
gateway.manage('map')
if gateway.error:
logger.error("LUN mapping failed : "
"".format(gateway.error_msg))
return jsonify(message="LUN map failed"), 500
return jsonify(message="LUN created"), 200
elif request.form['mode'] == 'resize':
return jsonify(message="LUN resized"), 200
else:
# this is an invalid request
return jsonify(message="Invalid Request - need to provide"
"pool, size and owner"), 400
else:
# DELETE request
# let's assume that the request has been validated by the caller
# if valid_request(request.remote_addr):
purge_host = request.form['purge_host']
pool, image = image_id.split('.', 1)
lun = LUN(logger, pool, image, '0G', purge_host)
if lun.error:
# problem defining the LUN instance
logger.error("Error initialising the LUN : "
"{}".format(lun.error_msg))
return jsonify(message="Error establishing LUN instance"), 500
lun.remove_lun()
if lun.error:
if 'allocated to' in lun.error_msg:
# attempted to remove rbd that is still allocated to a client
status_code = 400
else:
status_code = 500
logger.error("LUN remove failed : {}".format(lun.error_msg))
return jsonify(message="Failed to remove the LUN"), status_code
config.refresh()
return jsonify(message="LUN removed"), 200
def manage_gateway(gateway_name=None):
"""
Manage the local iSCSI gateway definition
Internal Use ONLY
Gateways may be be added(PUT), queried (GET) or deleted (DELETE) from
the configuration
:param gateway_name: (str) gateway name, normally the DNS name
**RESTRICTED**
"""
if request.method == 'GET':
if gateway_name in config.config['gateways']:
return jsonify(config.config['gateways'][gateway_name]), 200
else:
return jsonify(message="Gateway doesn't exist in the "
"configuration"), 404
elif request.method == 'PUT':
# the parameters need to be cast to str for compatibility
# with the comparison logic in common.config.add_item
logger.debug("Attempting create of gateway {}".format(gateway_name))
gateway_ips = str(request.form['gateway_ip_list'])
target_iqn = str(request.form['target_iqn'])
target_mode = str(request.form.get('mode', 'target'))
gateway_ip_list = gateway_ips.split(',')
gateway = GWTarget(logger, target_iqn, gateway_ip_list)
if gateway.error:
logger.error("Unable to create an instance of the GWTarget class")
return jsonify(message="Failed to create the gateway"), 500
gateway.manage(target_mode)
if gateway.error:
logger.error("manage({}) logic failed for {}".format(
target_mode, gateway_name))
return jsonify(message="Failed to create the gateway"), 500
logger.info("created the gateway")
if target_mode == 'target':
# refresh only for target definitions, since that's when the config
# will actually change
logger.info("refreshing the configuration after the gateway "
"creation")
config.refresh()
return jsonify(message="Gateway defined/mapped"), 200
else:
# DELETE gateway request
gateway = GWTarget(logger, config.config['gateways']['iqn'], '')
if gateway.error:
return jsonify(message="Failed to connect to the gateway"), 500
gateway.manage('clearconfig')
if gateway.error:
logger.error("clearconfig failed for {} : "
"{}".format(gateway_name, gateway.error_msg))
return jsonify(message="Unable to remove {} from the "
"configuration".format(gateway_name)), 400
else:
config.refresh()
return jsonify(message="Gateway removed successfully"), 200