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489 lines
17 KiB
Python
489 lines
17 KiB
Python
#!/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 (@mhite)"
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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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validate_certs:
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description:
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- If C(no), SSL certificates will not be validated. This should only be used
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on personally controlled sites. Prior to 2.0, this module would always
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validate on python >= 2.7.9 and never validate on python <= 2.7.8
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required: false
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default: 'yes'
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choices: ['yes', 'no']
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version_added: 2.0
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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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session_state:
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description:
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- Set new session availability status for node
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version_added: "1.9"
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required: false
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default: null
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choices: ['enabled', 'disabled']
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aliases: []
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monitor_state:
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description:
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- Set monitor availability status for node
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version_added: "1.9"
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required: false
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default: null
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choices: ['enabled', 'disabled']
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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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monitor_type:
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description:
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- Monitor rule type when monitors > 1
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version_added: "2.2"
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required: False
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default: null
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choices: ['and_list', 'm_of_n']
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aliases: []
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quorum:
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description:
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- Monitor quorum value when monitor_type is m_of_n
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version_added: "2.2"
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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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monitors:
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description:
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- Monitor template name list. Always use the full path to the monitor.
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version_added: "2.2"
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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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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: Add node with a single 'ping' monitor
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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: Common
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host: "{{ ansible_default_ipv4["address"] }}"
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name: mytestserver
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monitors:
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- /Common/icmp
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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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# The BIG-IP GUI doesn't map directly to the API calls for "Node ->
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# General Properties -> State". The following states map to API monitor
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# and session states.
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#
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# Enabled (all traffic allowed):
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# monitor_state=enabled, session_state=enabled
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# Disabled (only persistent or active connections allowed):
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# monitor_state=enabled, session_state=disabled
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# Forced offline (only active connections allowed):
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# monitor_state=disabled, session_state=disabled
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#
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# See https://devcentral.f5.com/questions/icontrol-equivalent-call-for-b-node-down
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- name: Force node offline
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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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session_state=disabled
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monitor_state=disabled
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partition=matthite
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name="{{ ansible_default_ipv4["address"] }}"
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'''
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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 set_node_session_enabled_state(api, name, session_state):
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session_state = "STATE_%s" % session_state.strip().upper()
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api.LocalLB.NodeAddressV2.set_session_enabled_state(nodes=[name],
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states=[session_state])
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def get_node_session_status(api, name):
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result = api.LocalLB.NodeAddressV2.get_session_status(nodes=[name])[0]
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result = result.split("SESSION_STATUS_")[-1].lower()
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return result
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def set_node_monitor_state(api, name, monitor_state):
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monitor_state = "STATE_%s" % monitor_state.strip().upper()
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api.LocalLB.NodeAddressV2.set_monitor_state(nodes=[name],
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states=[monitor_state])
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def get_node_monitor_status(api, name):
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result = api.LocalLB.NodeAddressV2.get_monitor_status(nodes=[name])[0]
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result = result.split("MONITOR_STATUS_")[-1].lower()
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return result
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def get_monitors(api, name):
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result = api.LocalLB.NodeAddressV2.get_monitor_rule(nodes=[name])[0]
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monitor_type = result['type'].split("MONITOR_RULE_TYPE_")[-1].lower()
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quorum = result['quorum']
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monitor_templates = result['monitor_templates']
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return (monitor_type, quorum, monitor_templates)
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def set_monitors(api, name, monitor_type, quorum, monitor_templates):
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monitor_type = "MONITOR_RULE_TYPE_%s" % monitor_type.strip().upper()
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monitor_rule = {'type': monitor_type, 'quorum': quorum, 'monitor_templates': monitor_templates}
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api.LocalLB.NodeAddressV2.set_monitor_rule(nodes=[name],
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monitor_rules=[monitor_rule])
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def main():
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monitor_type_choices = ['and_list', 'm_of_n']
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argument_spec=f5_argument_spec()
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argument_spec.update(dict(
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session_state = dict(type='str', choices=['enabled', 'disabled']),
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monitor_state = dict(type='str', choices=['enabled', 'disabled']),
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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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monitor_type = dict(type='str', choices=monitor_type_choices),
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quorum = dict(type='int'),
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monitors = dict(type='list')
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)
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)
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module = AnsibleModule(
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argument_spec = argument_spec,
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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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if module.params['validate_certs']:
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import ssl
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if not hasattr(ssl, 'SSLContext'):
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module.fail_json(msg='bigsuds does not support verifying certificates with python < 2.7.9. Either update python or set validate_certs=False on the task')
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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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validate_certs = module.params['validate_certs']
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session_state = module.params['session_state']
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monitor_state = module.params['monitor_state']
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host = module.params['host']
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name = module.params['name']
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address = fq_name(partition, name)
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description = module.params['description']
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monitor_type = module.params['monitor_type']
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if monitor_type:
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monitor_type = monitor_type.lower()
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quorum = module.params['quorum']
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monitors = module.params['monitors']
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if monitors:
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monitors = []
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for monitor in module.params['monitors']:
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monitors.append(fq_name(partition, monitor))
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# sanity check user supplied values
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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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if monitors:
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if len(monitors) == 1:
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# set default required values for single monitor
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quorum = 0
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monitor_type = 'single'
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elif len(monitors) > 1:
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if not monitor_type:
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module.fail_json(msg="monitor_type required for monitors > 1")
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if monitor_type == 'm_of_n' and not quorum:
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module.fail_json(msg="quorum value required for monitor_type m_of_n")
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if monitor_type != 'm_of_n':
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quorum = 0
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elif monitor_type:
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# no monitors specified but monitor_type exists
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module.fail_json(msg="monitor_type require monitors parameter")
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elif quorum is not None:
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# no monitors specified but quorum exists
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module.fail_json(msg="quorum requires monitors parameter")
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try:
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api = bigip_api(server, user, password, validate_certs)
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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 session_state is not None:
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set_node_session_enabled_state(api, address,
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session_state)
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result = {'changed': True}
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if monitor_state is not None:
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set_node_monitor_state(api, address, monitor_state)
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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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if monitors:
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set_monitors(api, address, monitor_type, quorum, monitors)
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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 session_state is not None:
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session_status = get_node_session_status(api, address)
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if session_state == 'enabled' and \
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session_status == 'forced_disabled':
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if not module.check_mode:
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set_node_session_enabled_state(api, address,
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session_state)
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result = {'changed': True}
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elif session_state == 'disabled' and \
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session_status != 'force_disabled':
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if not module.check_mode:
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set_node_session_enabled_state(api, address,
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session_state)
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result = {'changed': True}
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if monitor_state is not None:
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monitor_status = get_node_monitor_status(api, address)
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if monitor_state == 'enabled' and \
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monitor_status == 'forced_down':
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if not module.check_mode:
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set_node_monitor_state(api, address,
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monitor_state)
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result = {'changed': True}
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elif monitor_state == 'disabled' and \
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monitor_status != 'forced_down':
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if not module.check_mode:
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set_node_monitor_state(api, address,
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monitor_state)
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result = {'changed': True}
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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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if monitors:
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t_monitor_type, t_quorum, t_monitor_templates = get_monitors(api, address)
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if (t_monitor_type != monitor_type) or (t_quorum != quorum) or (set(t_monitor_templates) != set(monitors)):
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if not module.check_mode:
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set_monitors(api, address, monitor_type, quorum, monitors)
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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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# import module snippets
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from ansible.module_utils.basic import *
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from ansible.module_utils.f5 import *
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if __name__ == '__main__':
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main()
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