New module to manipulate BIG-IP pool members and their attributes

pull/4054/head
Matt Hite 11 years ago
parent 8cc13590b4
commit 4f34afbc1d

@ -0,0 +1,334 @@
#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2013, Matt Hite <mhite@hotmail.com>
#
# 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: bigip_pool_member
short_description: "Manages F5 BIG-IP LTM pool members"
description:
- "Manages F5 BIG-IP LTM pool members via iControl SOAP API"
version_added: "TBD"
author: Matt Hite
notes:
- "Requires BIG-IP software version >= 11"
- "F5 developed module 'bigsuds' required (see http://devcentral.f5.com)"
- "Best run as a local_action in your playbook"
requirements:
- bigsuds
options:
server:
description:
- BIG-IP host
required: true
default: null
choices: []
aliases: []
user:
description:
- BIG-IP username
required: true
default: null
choices: []
aliases: []
password:
description:
- BIG-IP password
required: true
default: null
choices: []
aliases: []
state:
description:
- Pool member state
required: true
default: present
choices: ['present', 'absent']
aliases: []
name:
description:
- Pool name. This pool must exist.
required: true
default: null
choices: []
aliases: ['pool']
partition:
description:
- Partition
required: false
default: 'Common'
choices: []
aliases: []
host:
description:
- "Pool member IP"
required: true
default: null
choices: []
aliases: ['address']
port:
description:
- "Pool member port"
required: true
default: null
choices: []
aliases: []
connection_limit:
description:
- Sets the connection limit for a set of pool member. Setting this to 0 disables the limit.
required: false
default: null
choices: []
aliases: []
description:
description:
- Sets the description for a pool member. This is an arbitrary field which can be used for any purpose.
required: false
default: null
choices: []
aliases: []
rate_limit:
description:
- Sets the rate limit for a pool member. This value should be a positive integer representing connections-per-second. Setting this to 0 disables the limit.
required: false
default: null
choices: []
aliases: []
ratio:
description:
- Sets the ratio weight for a pool member. Valid values range from 1 through 100. New pool members -- unless overriden with this value -- default to 1.
required: false
default: null
choices: []
aliases: []
'''
EXAMPLES = '''
TBD
TBD
TBD
TBD
'''
try:
import bigsuds
except ImportError:
bigsuds_found = False
else:
bigsuds_found = True
# ===========================================
# bigip_pool_member module specific support methods.
#
def bigip_api(bigip, user, password):
api = bigsuds.BIGIP(hostname=bigip, username=user, password=password)
return api
def pool_exists(api, pool):
# hack to determine if pool exists
result = False
try:
api.LocalLB.Pool.get_object_status(pool_names=[pool])
result = True
except bigsuds.OperationFailed, e:
if "was not found" in str(e):
result = False
else:
# genuine exception
raise
return result
def member_exists(api, pool, address, port):
# hack to determine if member exists
result = False
try:
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.get_member_object_status(pool_names=[pool],
members=[members])
result = True
except bigsuds.OperationFailed, e:
if "was not found" in str(e):
result = False
else:
# genuine exception
raise
return result
def delete_node_address(api, address):
result = False
try:
api.LocalLB.NodeAddressV2.delete_node_address(nodes=[address])
result = True
except bigsuds.OperationFailed, e:
if "is referenced by a member of pool" in str(e):
result = False
else:
# genuine exception
raise
return result
def remove_pool_member(api, pool, address, port):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.remove_member_v2(pool_names=[pool], members=[members])
def add_pool_member(api, pool, address, port):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.add_member_v2(pool_names=[pool], members=[members])
def get_connection_limit(api, pool, address, port):
members = [{'address': address, 'port': port}]
result = api.LocalLB.Pool.get_member_connection_limit(pool_names=[pool], members=[members])[0][0]
return result
def set_connection_limit(api, pool, address, port, limit):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.set_member_connection_limit(pool_names=[pool], members=[members], limits=[[limit]])
def get_description(api, pool, address, port):
members = [{'address': address, 'port': port}]
result = api.LocalLB.Pool.get_member_description(pool_names=[pool], members=[members])[0][0]
return result
def set_description(api, pool, address, port, description):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.set_member_description(pool_names=[pool], members=[members], descriptions=[[description]])
def get_rate_limit(api, pool, address, port):
members = [{'address': address, 'port': port}]
result = api.LocalLB.Pool.get_member_rate_limit(pool_names=[pool], members=[members])[0][0]
return result
def set_rate_limit(api, pool, address, port, limit):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.set_member_rate_limit(pool_names=[pool], members=[members], limits=[[limit]])
def get_ratio(api, pool, address, port):
members = [{'address': address, 'port': port}]
result = api.LocalLB.Pool.get_member_ratio(pool_names=[pool], members=[members])[0][0]
return result
def set_ratio(api, pool, address, port, ratio):
members = [{'address': address, 'port': port}]
api.LocalLB.Pool.set_member_ratio(pool_names=[pool], members=[members], ratios=[[ratio]])
def main():
module = AnsibleModule(
argument_spec = dict(
server = dict(type='str', required=True),
user = dict(type='str', required=True),
password = dict(type='str', required=True),
state = dict(type='str', default='present', choices=['present', 'absent']),
name = dict(type='str', required=True, aliases=['pool']),
partition = dict(type='str', default='Common'),
host = dict(type='str', required=True, aliases=['address']),
port = dict(type='int', required=True),
connection_limit = dict(type='int'),
description = dict(type='str'),
rate_limit = dict(type='int'),
ratio = dict(type='int')
),
supports_check_mode=True
)
if not bigsuds_found:
module.fail_json(msg="the python bigsuds module is required")
server = module.params['server']
user = module.params['user']
password = module.params['password']
state = module.params['state']
name = module.params['name']
partition = module.params['partition']
pool = "/%s/%s" % (partition, name)
connection_limit = module.params['connection_limit']
description = module.params['description']
rate_limit = module.params['rate_limit']
ratio = module.params['ratio']
host = module.params['host']
address = "/%s/%s" % (partition, host)
port = module.params['port']
# sanity check user supplied values
if (host and not port) or (port and not host):
module.fail_json(msg="both host and port must be supplied")
if 1 > port > 65535:
module.fail_json(msg="valid ports must be in range 1 - 65535")
try:
api = bigip_api(server, user, password)
if not pool_exists(api, pool):
module.fail_json(msg="pool does not exist")
result = {'changed': False} # default
if state == 'absent':
if member_exists(api, pool, address, port):
if not module.check_mode:
remove_pool_member(api, pool, address, port)
deleted = delete_node_address(api, address)
result = {'changed': True, 'deleted': deleted}
else:
result = {'changed': True}
elif state == 'present':
if not member_exists(api, pool, address, port):
if not module.check_mode:
add_pool_member(api, pool, address, port)
if connection_limit is not None:
set_connection_limit(api, pool, address, port, connection_limit)
if description is not None:
set_description(api, pool, address, port, description)
if rate_limit is not None:
set_rate_limit(api, pool, address, port, rate_limit)
if ratio is not None:
set_ratio(api, pool, address, port, ratio)
result = {'changed': True}
else:
# pool member exists -- potentially modify attributes
if connection_limit is not None and connection_limit != get_connection_limit(api, pool, address, port):
if not module.check_mode:
set_connection_limit(api, pool, address, port, connection_limit)
result = {'changed': True}
if description is not None and description != get_description(api, pool, address, port):
if not module.check_mode:
set_description(api, pool, address, port, description)
result = {'changed': True}
if rate_limit is not None and rate_limit != get_rate_limit(api, pool, address, port):
if not module.check_mode:
set_rate_limit(api, pool, address, port, rate_limit)
result = {'changed': True}
if ratio is not None and ratio != get_ratio(api, pool, address, port):
if not module.check_mode:
set_ratio(api, pool, address, port, ratio)
result = {'changed': True}
except Exception, e:
module.fail_json(msg="received exception: %s" % e)
module.exit_json(**result)
# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
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