New module to manipulate BIG-IP pool members and their attributes
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Matt Hite
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334
library/net_infrastructure/bigip_pool_member
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library/net_infrastructure/bigip_pool_member
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2013, Matt Hite <mhite@hotmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: bigip_pool_member
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short_description: "Manages F5 BIG-IP LTM pool members"
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description:
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- "Manages F5 BIG-IP LTM pool members via iControl SOAP API"
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version_added: "TBD"
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author: Matt Hite
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notes:
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- "Requires BIG-IP software version >= 11"
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- "F5 developed module 'bigsuds' required (see http://devcentral.f5.com)"
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- "Best run as a local_action in your playbook"
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requirements:
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- bigsuds
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options:
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server:
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description:
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- BIG-IP host
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required: true
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default: null
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choices: []
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aliases: []
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user:
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description:
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- BIG-IP username
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required: true
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default: null
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choices: []
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aliases: []
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password:
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description:
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- BIG-IP password
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required: true
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default: null
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choices: []
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aliases: []
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state:
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description:
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- Pool member state
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required: true
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default: present
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choices: ['present', 'absent']
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aliases: []
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name:
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description:
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- Pool name. This pool must exist.
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required: true
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default: null
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choices: []
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aliases: ['pool']
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partition:
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description:
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- Partition
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required: false
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default: 'Common'
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choices: []
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aliases: []
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host:
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description:
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- "Pool member IP"
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required: true
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default: null
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choices: []
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aliases: ['address']
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port:
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description:
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- "Pool member port"
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required: true
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default: null
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choices: []
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aliases: []
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connection_limit:
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description:
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- Sets the connection limit for a set of pool member. Setting this to 0 disables the limit.
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required: false
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default: null
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choices: []
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aliases: []
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description:
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description:
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- Sets the description for a pool member. This is an arbitrary field which can be used for any purpose.
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required: false
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default: null
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choices: []
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aliases: []
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rate_limit:
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description:
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- 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.
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required: false
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default: null
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choices: []
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aliases: []
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ratio:
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description:
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- 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.
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required: false
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default: null
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choices: []
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aliases: []
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'''
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EXAMPLES = '''
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TBD
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TBD
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TBD
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TBD
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'''
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try:
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import bigsuds
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except ImportError:
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bigsuds_found = False
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else:
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bigsuds_found = True
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# ===========================================
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# bigip_pool_member module specific support methods.
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#
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def bigip_api(bigip, user, password):
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api = bigsuds.BIGIP(hostname=bigip, username=user, password=password)
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return api
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def pool_exists(api, pool):
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# hack to determine if pool exists
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result = False
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try:
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api.LocalLB.Pool.get_object_status(pool_names=[pool])
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result = True
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except bigsuds.OperationFailed, e:
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if "was not found" in str(e):
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result = False
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else:
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# genuine exception
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raise
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return result
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def member_exists(api, pool, address, port):
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# hack to determine if member exists
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result = False
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try:
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.get_member_object_status(pool_names=[pool],
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members=[members])
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result = True
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except bigsuds.OperationFailed, e:
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if "was not found" in str(e):
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result = False
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else:
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# genuine exception
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raise
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return result
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def delete_node_address(api, address):
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result = False
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try:
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api.LocalLB.NodeAddressV2.delete_node_address(nodes=[address])
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result = True
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except bigsuds.OperationFailed, e:
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if "is referenced by a member of pool" in str(e):
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result = False
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else:
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# genuine exception
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raise
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return result
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def remove_pool_member(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.remove_member_v2(pool_names=[pool], members=[members])
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def add_pool_member(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.add_member_v2(pool_names=[pool], members=[members])
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def get_connection_limit(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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result = api.LocalLB.Pool.get_member_connection_limit(pool_names=[pool], members=[members])[0][0]
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return result
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def set_connection_limit(api, pool, address, port, limit):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.set_member_connection_limit(pool_names=[pool], members=[members], limits=[[limit]])
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def get_description(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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result = api.LocalLB.Pool.get_member_description(pool_names=[pool], members=[members])[0][0]
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return result
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def set_description(api, pool, address, port, description):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.set_member_description(pool_names=[pool], members=[members], descriptions=[[description]])
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def get_rate_limit(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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result = api.LocalLB.Pool.get_member_rate_limit(pool_names=[pool], members=[members])[0][0]
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return result
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def set_rate_limit(api, pool, address, port, limit):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.set_member_rate_limit(pool_names=[pool], members=[members], limits=[[limit]])
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def get_ratio(api, pool, address, port):
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members = [{'address': address, 'port': port}]
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result = api.LocalLB.Pool.get_member_ratio(pool_names=[pool], members=[members])[0][0]
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return result
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def set_ratio(api, pool, address, port, ratio):
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members = [{'address': address, 'port': port}]
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api.LocalLB.Pool.set_member_ratio(pool_names=[pool], members=[members], ratios=[[ratio]])
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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server = dict(type='str', required=True),
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user = dict(type='str', required=True),
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password = dict(type='str', required=True),
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state = dict(type='str', default='present', choices=['present', 'absent']),
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name = dict(type='str', required=True, aliases=['pool']),
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partition = dict(type='str', default='Common'),
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host = dict(type='str', required=True, aliases=['address']),
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port = dict(type='int', required=True),
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connection_limit = dict(type='int'),
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description = dict(type='str'),
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rate_limit = dict(type='int'),
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ratio = dict(type='int')
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),
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supports_check_mode=True
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)
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if not bigsuds_found:
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module.fail_json(msg="the python bigsuds module is required")
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server = module.params['server']
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user = module.params['user']
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password = module.params['password']
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state = module.params['state']
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name = module.params['name']
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partition = module.params['partition']
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pool = "/%s/%s" % (partition, name)
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connection_limit = module.params['connection_limit']
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description = module.params['description']
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rate_limit = module.params['rate_limit']
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ratio = module.params['ratio']
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host = module.params['host']
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address = "/%s/%s" % (partition, host)
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port = module.params['port']
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# sanity check user supplied values
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if (host and not port) or (port and not host):
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module.fail_json(msg="both host and port must be supplied")
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if 1 > port > 65535:
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module.fail_json(msg="valid ports must be in range 1 - 65535")
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try:
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api = bigip_api(server, user, password)
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if not pool_exists(api, pool):
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module.fail_json(msg="pool does not exist")
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result = {'changed': False} # default
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if state == 'absent':
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if member_exists(api, pool, address, port):
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if not module.check_mode:
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remove_pool_member(api, pool, address, port)
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deleted = delete_node_address(api, address)
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result = {'changed': True, 'deleted': deleted}
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else:
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result = {'changed': True}
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elif state == 'present':
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if not member_exists(api, pool, address, port):
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if not module.check_mode:
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add_pool_member(api, pool, address, port)
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if connection_limit is not None:
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set_connection_limit(api, pool, address, port, connection_limit)
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if description is not None:
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set_description(api, pool, address, port, description)
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if rate_limit is not None:
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set_rate_limit(api, pool, address, port, rate_limit)
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if ratio is not None:
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set_ratio(api, pool, address, port, ratio)
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result = {'changed': True}
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else:
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# pool member exists -- potentially modify attributes
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if connection_limit is not None and connection_limit != get_connection_limit(api, pool, address, port):
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if not module.check_mode:
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set_connection_limit(api, pool, address, port, connection_limit)
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result = {'changed': True}
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if description is not None and description != get_description(api, pool, address, port):
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if not module.check_mode:
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set_description(api, pool, address, port, description)
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result = {'changed': True}
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if rate_limit is not None and rate_limit != get_rate_limit(api, pool, address, port):
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if not module.check_mode:
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set_rate_limit(api, pool, address, port, rate_limit)
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result = {'changed': True}
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if ratio is not None and ratio != get_ratio(api, pool, address, port):
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if not module.check_mode:
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set_ratio(api, pool, address, port, ratio)
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result = {'changed': True}
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except Exception, e:
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module.fail_json(msg="received exception: %s" % e)
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module.exit_json(**result)
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# include magic from lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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