mirror of
https://github.com/ansible-collections/community.general.git
synced 2024-09-14 20:13:21 +02:00
Merge branch 'open_iscsi_bis' of https://github.com/sergevanginderachter/ansible into sergevanginderachter-open_iscsi_bis
This commit is contained in:
commit
c98ed252fe
1 changed files with 373 additions and 0 deletions
373
library/system/open_iscsi
Normal file
373
library/system/open_iscsi
Normal file
|
@ -0,0 +1,373 @@
|
|||
#!/usr/bin/python
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
# (c) 2013, Serge van Ginderachter <serge@vanginderachter.be>
|
||||
#
|
||||
# This file is part of Ansible
|
||||
#
|
||||
# Ansible is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# Ansible is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
DOCUMENTATION = '''
|
||||
---
|
||||
module: open_iscsi
|
||||
author: Serge van Ginderachter
|
||||
version_added: "1.3"
|
||||
short_description: Manage iscsi targets with open-iscsi
|
||||
description:
|
||||
- Discover targets on given portal, (dis)connect targets, mark targets to
|
||||
manually or auto start, return device nodes of connected targets.
|
||||
requirements:
|
||||
- open_iscsi library and tools (iscsiadm)
|
||||
options:
|
||||
portal:
|
||||
required: false
|
||||
aliases: [ip]
|
||||
description:
|
||||
- the ip address of the iscsi target
|
||||
port:
|
||||
required: false
|
||||
default: 3260
|
||||
description:
|
||||
- the port on which the iscsi target process listens
|
||||
target:
|
||||
required: false
|
||||
aliases: [name, targetname]
|
||||
description:
|
||||
- the iscsi target name
|
||||
login:
|
||||
required: false
|
||||
choices: [true, false]
|
||||
description:
|
||||
- whether the target node should be connected
|
||||
node_auth:
|
||||
required: false
|
||||
default: CHAP
|
||||
description:
|
||||
- discovery.sendtargets.auth.authmethod
|
||||
node_user:
|
||||
required: false
|
||||
description:
|
||||
- discovery.sendtargets.auth.username
|
||||
node_pass:
|
||||
required: false
|
||||
description:
|
||||
- discovery.sendtargets.auth.password
|
||||
auto_node_startup:
|
||||
aliases: [automatic]
|
||||
required: false
|
||||
choices: [true, false]
|
||||
description:
|
||||
- whether the target node should be automatically connected at startup
|
||||
discover:
|
||||
required: false
|
||||
choices: [true, false]
|
||||
description:
|
||||
- whether the list of target nodes on the portal should be
|
||||
(re)discovered and added to the persistent iscsi database.
|
||||
Keep in mind that iscsiadm discovery resets configurtion, like node.startup
|
||||
to manual, hence combined with auto_node_startup=yes will allways return
|
||||
a changed state.
|
||||
show_nodes:
|
||||
required: false
|
||||
choices: [true, false]
|
||||
description:
|
||||
- whether the list of nodes in the persistent iscsi database should be
|
||||
returned by the module
|
||||
|
||||
examples:
|
||||
- description: perform a discovery on 10.1.2.3 and show available target
|
||||
nodes
|
||||
code: open_iscsi: show_nodes=yes discover=yes portal=10.1.2.3
|
||||
- description: discover targets on portal and login to the one available
|
||||
(only works if exactly one target is exported to the initiator)
|
||||
code: open_iscsi: portal={{iscsi_target}} login=yes discover=yes
|
||||
- description: connect to the named target, after updating the local
|
||||
persistent database (cache)
|
||||
code: login=yes target=iqn.1986-03.com.sun:02:f8c1f9e0-c3ec-ec84-c9c9-8bfb0cd5de3d
|
||||
- description: discconnect from the cached named target
|
||||
code: login=no target=iqn.1986-03.com.sun:02:f8c1f9e0-c3ec-ec84-c9c9-8bfb0cd5de3d"
|
||||
'''
|
||||
|
||||
import glob
|
||||
import time
|
||||
|
||||
ISCSIADM = 'iscsiadm'
|
||||
|
||||
def compare_nodelists(l1, l2):
|
||||
|
||||
l1.sort()
|
||||
l2.sort()
|
||||
return l1 == l2
|
||||
|
||||
|
||||
def iscsi_get_cached_nodes(module, portal=None):
|
||||
|
||||
cmd = '%s --mode node' % iscsiadm_cmd
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc == 0:
|
||||
lines = out.splitlines()
|
||||
nodes = []
|
||||
for line in lines:
|
||||
# line format is "ip:port,target_portal_group_tag targetname"
|
||||
parts = line.split()
|
||||
if len(parts) > 2:
|
||||
module.fail_json(msg='error parsing output', cmd=cmd)
|
||||
target = parts[1]
|
||||
parts = parts[0].split(':')
|
||||
target_portal = parts[0]
|
||||
|
||||
if portal is None or portal == target_portal:
|
||||
nodes.append(target)
|
||||
|
||||
# older versions of scsiadm don't have nice return codes
|
||||
# for newer versions see iscsiadm(8); also usr/iscsiadm.c for details
|
||||
# err can contain [N|n]o records...
|
||||
elif rc == 21 or (rc == 255 and err.find("o records found") != -1):
|
||||
nodes = []
|
||||
else:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
return nodes
|
||||
|
||||
|
||||
def iscsi_discover(module, portal, port):
|
||||
|
||||
cmd = '%s --mode discovery --type sendtargets --portal %s:%s' % (iscsiadm_cmd, portal, port)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_loggedon(module, target):
|
||||
|
||||
cmd = '%s --mode session' % iscsiadm_cmd
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc == 0:
|
||||
return target in out
|
||||
else:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_login(module, target):
|
||||
|
||||
node_auth = module.params['node_auth']
|
||||
node_user = module.params['node_user']
|
||||
node_pass = module.params['node_pass']
|
||||
|
||||
if node_user:
|
||||
params = [('node.session.auth.authmethod', node_auth),
|
||||
('node.session.auth.username', node_user),
|
||||
('node.session.auth.password', node_pass)]
|
||||
for (name, value) in params:
|
||||
cmd = '%s --mode node --targetname %s --op=update --name %s --value %s' % (iscsiadm_cmd, target, name, value)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
cmd = '%s --mode node --targetname %s --login' % (iscsiadm_cmd, target)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_logout(module, target):
|
||||
|
||||
cmd = '%s --mode node --targetname %s --logout' % (iscsiadm_cmd, target)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_device_node(module, target):
|
||||
|
||||
# if anyone know a better way to find out which devicenodes get created for
|
||||
# a given target...
|
||||
|
||||
devices = glob.glob('/dev/disk/by-path/*%s*' % target)
|
||||
if len(devices) == 0:
|
||||
return None
|
||||
else:
|
||||
devdisks = []
|
||||
for dev in devices:
|
||||
# exclude partitions
|
||||
if "-part" not in dev:
|
||||
devdisk = os.path.realpath(dev)
|
||||
# only add once (multi-path?)
|
||||
if devdisk not in devdisks:
|
||||
devdisks.append(devdisk)
|
||||
return devdisks
|
||||
|
||||
|
||||
def target_isauto(module, target):
|
||||
|
||||
cmd = '%s --mode node --targetname %s' % (iscsiadm_cmd, target)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc == 0:
|
||||
lines = out.splitlines()
|
||||
for line in lines:
|
||||
if 'node.startup' in line:
|
||||
return 'automatic' in line
|
||||
return False
|
||||
else:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_setauto(module, target):
|
||||
|
||||
cmd = '%s --mode node --targetname %s --op=update --name node.startup --value automatic' % (iscsiadm_cmd, target)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def target_setmanual(module, target):
|
||||
|
||||
cmd = '%s --mode node --targetname %s --op=update --name node.startup --value manual' % (iscsiadm_cmd, target)
|
||||
(rc, out, err) = module.run_command(cmd)
|
||||
|
||||
if rc > 0:
|
||||
module.fail_json(cmd=cmd, rc=rc, msg=err)
|
||||
|
||||
|
||||
def main():
|
||||
|
||||
# load ansible module object
|
||||
module = AnsibleModule(
|
||||
argument_spec = dict(
|
||||
|
||||
# target
|
||||
portal = dict(required=False, aliases=['ip']),
|
||||
port = dict(required=False, default=3260),
|
||||
target = dict(required=False, aliases=['name', 'targetname']),
|
||||
node_auth = dict(required=False, default='CHAP'),
|
||||
node_user = dict(required=False),
|
||||
node_pass = dict(required=False),
|
||||
|
||||
# actions
|
||||
login = dict(type='bool', aliases=['state']),
|
||||
auto_node_startup = dict(type='bool', aliases=['automatic']),
|
||||
discover = dict(type='bool', default=False),
|
||||
show_nodes = dict(type='bool', default=False)
|
||||
),
|
||||
|
||||
required_together=[['discover_user', 'discover_pass'],
|
||||
['node_user', 'node_pass']],
|
||||
supports_check_mode=True
|
||||
)
|
||||
|
||||
global iscsiadm_cmd
|
||||
iscsiadm_cmd = module.get_bin_path('iscsiadm', required=True)
|
||||
|
||||
# parameters
|
||||
portal = module.params['portal']
|
||||
target = module.params['target']
|
||||
port = module.params['port']
|
||||
login = module.params['login']
|
||||
automatic = module.params['auto_node_startup']
|
||||
discover = module.params['discover']
|
||||
show_nodes = module.params['show_nodes']
|
||||
|
||||
check = module.check_mode
|
||||
|
||||
cached = iscsi_get_cached_nodes(module, portal)
|
||||
|
||||
# return json dict
|
||||
result = {}
|
||||
result['changed'] = False
|
||||
|
||||
if discover:
|
||||
if portal is None:
|
||||
module.fail_json(msg = "Need to specify at least the portal (ip) to discover")
|
||||
elif check:
|
||||
nodes = cached
|
||||
else:
|
||||
iscsi_discover(module, portal, port)
|
||||
nodes = iscsi_get_cached_nodes(module, portal)
|
||||
if not compare_nodelists(cached, nodes):
|
||||
result['changed'] |= True
|
||||
result['cache_updated'] = True
|
||||
else:
|
||||
nodes = cached
|
||||
|
||||
if login is not None or automatic is not None:
|
||||
if target is None:
|
||||
if len(nodes) > 1:
|
||||
module.fail_json(msg = "Need to specify a target")
|
||||
else:
|
||||
target = nodes[0]
|
||||
else:
|
||||
# check given target is in cache
|
||||
check_target = False
|
||||
for node in nodes:
|
||||
if node == target:
|
||||
check_target = True
|
||||
break
|
||||
if not check_target:
|
||||
module.fail_json(msg = "Specified target not found")
|
||||
|
||||
if show_nodes:
|
||||
result['nodes'] = nodes
|
||||
|
||||
if login is not None:
|
||||
loggedon = target_loggedon(module,target)
|
||||
if (login and loggedon) or (not login and not loggedon):
|
||||
result['changed'] |= False
|
||||
if login:
|
||||
result['devicenodes'] = target_device_node(module,target)
|
||||
elif not check:
|
||||
if login:
|
||||
target_login(module, target)
|
||||
# give udev some time
|
||||
time.sleep(1)
|
||||
result['devicenodes'] = target_device_node(module,target)
|
||||
else:
|
||||
target_logout(module, target)
|
||||
result['changed'] |= True
|
||||
result['connection_changed'] = True
|
||||
else:
|
||||
result['changed'] |= True
|
||||
result['connection_changed'] = True
|
||||
|
||||
if automatic is not None:
|
||||
isauto = target_isauto(module, target)
|
||||
if (automatic and isauto) or (not automatic and not isauto):
|
||||
result['changed'] |= False
|
||||
result['automatic_changed'] = False
|
||||
elif not check:
|
||||
if automatic:
|
||||
target_setauto(module, target)
|
||||
else:
|
||||
target_setmanual(module, target)
|
||||
result['changed'] |= True
|
||||
result['automatic_changed'] = True
|
||||
else:
|
||||
result['changed'] |= True
|
||||
result['automatic_changed'] = True
|
||||
|
||||
module.exit_json(**result)
|
||||
|
||||
|
||||
|
||||
# this is magic, see lib/ansible/module_common.py
|
||||
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
|
||||
|
||||
main()
|
||||
|
Loading…
Reference in a new issue