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Merge pull request #4712 from mhite/bigip_node
New BIG-IP module for managing node objects
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jctanner
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294
library/net_infrastructure/bigip_node
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294
library/net_infrastructure/bigip_node
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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_node
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short_description: "Manages F5 BIG-IP LTM nodes"
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description:
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- "Manages F5 BIG-IP LTM nodes via iControl SOAP API"
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version_added: "1.4"
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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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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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name:
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description:
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- "Node name"
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required: false
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default: null
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choices: []
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host:
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description:
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- "Node IP. Required when state=present and node does not exist. Error when state=absent."
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required: true
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default: null
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choices: []
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aliases: ['address', 'ip']
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description:
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description:
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- "Node description."
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required: false
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default: null
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choices: []
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'''
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EXAMPLES = '''
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## playbook task examples:
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---
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# file bigip-test.yml
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# ...
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- hosts: bigip-test
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tasks:
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- name: Add node
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local_action: >
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bigip_node
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server=lb.mydomain.com
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user=admin
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password=mysecret
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state=present
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partition=matthite
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host="{{ ansible_default_ipv4["address"] }}"
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name="{{ ansible_default_ipv4["address"] }}"
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# Note that the BIG-IP automatically names the node using the
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# IP address specified in previous play's host parameter.
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# Future plays referencing this node no longer use the host
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# parameter but instead use the name parameter.
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# Alternatively, you could have specified a name with the
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# name parameter when state=present.
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- name: Modify node description
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local_action: >
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bigip_node
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server=lb.mydomain.com
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user=admin
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password=mysecret
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state=present
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partition=matthite
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name="{{ ansible_default_ipv4["address"] }}"
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description="Our best server yet"
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- name: Delete node
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local_action: >
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bigip_node
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server=lb.mydomain.com
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user=admin
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password=mysecret
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state=absent
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partition=matthite
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name="{{ ansible_default_ipv4["address"] }}"
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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_node module specific
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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 node_exists(api, address):
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# hack to determine if node exists
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result = False
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try:
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api.LocalLB.NodeAddressV2.get_object_status(nodes=[address])
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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 create_node_address(api, address, name):
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try:
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api.LocalLB.NodeAddressV2.create(nodes=[name], addresses=[address], limits=[0])
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result = True
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desc = ""
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except bigsuds.OperationFailed, e:
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if "already exists" in str(e):
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result = False
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desc = "referenced name or IP already in use"
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else:
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# genuine exception
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raise
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return (result, desc)
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def get_node_address(api, name):
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return api.LocalLB.NodeAddressV2.get_address(nodes=[name])[0]
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def delete_node_address(api, address):
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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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desc = ""
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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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desc = "node referenced by pool"
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else:
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# genuine exception
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raise
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return (result, desc)
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def set_node_description(api, name, description):
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api.LocalLB.NodeAddressV2.set_description(nodes=[name],
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descriptions=[description])
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def get_node_description(api, name):
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return api.LocalLB.NodeAddressV2.get_description(nodes=[name])[0]
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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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partition = dict(type='str', default='Common'),
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name = dict(type='str', required=True),
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host = dict(type='str', aliases=['address', 'ip']),
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description = dict(type='str')
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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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partition = module.params['partition']
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host = module.params['host']
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name = module.params['name']
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address = "/%s/%s" % (partition, name)
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description = module.params['description']
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if state == 'absent' and host is not None:
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module.fail_json(msg="host parameter invalid when state=absent")
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try:
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api = bigip_api(server, user, password)
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result = {'changed': False} # default
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if state == 'absent':
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if node_exists(api, address):
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if not module.check_mode:
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deleted, desc = delete_node_address(api, address)
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if not deleted:
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module.fail_json(msg="unable to delete: %s" % desc)
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else:
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result = {'changed': True}
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else:
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# check-mode return value
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result = {'changed': True}
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elif state == 'present':
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if not node_exists(api, address):
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if host is None:
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module.fail_json(msg="host parameter required when " \
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"state=present and node does not exist")
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if not module.check_mode:
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created, desc = create_node_address(api, address=host, name=address)
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if not created:
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module.fail_json(msg="unable to create: %s" % desc)
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else:
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result = {'changed': True}
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if description is not None:
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set_node_description(api, address, description)
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result = {'changed': True}
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else:
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# check-mode return value
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result = {'changed': True}
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else:
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# node exists -- potentially modify attributes
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if host is not None:
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if get_node_address(api, address) != host:
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module.fail_json(msg="Changing the node address is " \
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"not supported by the API; " \
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"delete and recreate the node.")
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if description is not None:
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if get_node_description(api, address) != description:
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if not module.check_mode:
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set_node_description(api, address, description)
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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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