363 lines
12 KiB
Python
363 lines
12 KiB
Python
#!/usr/bin/python
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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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#
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DOCUMENTATION = """
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---
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module: ios_config
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version_added: "2.1"
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author: "Peter Sprygada (@privateip)"
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short_description: Manage Cisco IOS configuration sections
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description:
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- Cisco IOS configurations use a simple block indent file syntax
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for segmenting configuration into sections. This module provides
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an implementation for working with IOS configuration sections in
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a deterministic way.
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extends_documentation_fragment: ios
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options:
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lines:
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description:
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- The ordered set of commands that should be configured in the
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section. The commands must be the exact same commands as found
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in the device running-config. Be sure to note the configuration
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command syntax as some commands are automatically modified by the
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device config parser.
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required: false
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default: null
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aliases: ['commands']
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parents:
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description:
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- The ordered set of parents that uniquely identify the section
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the commands should be checked against. If the parents argument
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is omitted, the commands are checked against the set of top
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level or global commands.
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required: false
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default: null
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src:
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description:
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- Specifies the source path to the file that contains the configuration
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or configuration template to load. The path to the source file can
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either be the full path on the Ansible control host or a relative
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path from the playbook or role root directory. This argument is mutually
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exclusive with I(lines).
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required: false
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default: null
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version_added: "2.2"
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before:
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description:
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- The ordered set of commands to push on to the command stack if
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a change needs to be made. This allows the playbook designer
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the opportunity to perform configuration commands prior to pushing
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any changes without affecting how the set of commands are matched
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against the system.
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required: false
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default: null
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after:
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description:
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- The ordered set of commands to append to the end of the command
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stack if a change needs to be made. Just like with I(before) this
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allows the playbook designer to append a set of commands to be
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executed after the command set.
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required: false
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default: null
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match:
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description:
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- Instructs the module on the way to perform the matching of
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the set of commands against the current device config. If
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match is set to I(line), commands are matched line by line. If
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match is set to I(strict), command lines are matched with respect
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to position. If match is set to I(exact), command lines
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must be an equal match. Finally, if match is set to I(none), the
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module will not attempt to compare the source configuration with
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the running configuration on the remote device.
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required: false
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default: line
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choices: ['line', 'strict', 'exact', 'none']
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replace:
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description:
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- Instructs the module on the way to perform the configuration
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on the device. If the replace argument is set to I(line) then
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the modified lines are pushed to the device in configuration
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mode. If the replace argument is set to I(block) then the entire
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command block is pushed to the device in configuration mode if any
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line is not correct.
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required: false
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default: line
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choices: ['line', 'block']
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force:
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description:
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- The force argument instructs the module to not consider the
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current devices running-config. When set to true, this will
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cause the module to push the contents of I(src) into the device
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without first checking if already configured.
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- Note this argument should be considered deprecated. To achieve
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the equivalent, set the C(match=none) which is idempotent. This argument
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will be removed in a future release.
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required: false
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default: false
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choices: ["true", "false"]
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version_added: "2.2"
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commit:
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description:
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- This argument specifies the update method to use when applying the
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configuration changes to the remote node. If the value is set to
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I(merge) the configuration updates are merged with the running-
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config. If the value is set to I(check), no changes are made to
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the remote host.
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required: false
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default: merge
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choices: ['merge', 'check']
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version_added: "2.2"
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backup:
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description:
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- This argument will cause the module to create a full backup of
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the current C(running-config) from the remote device before any
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changes are made. The backup file is written to the C(backup)
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folder in the playbook root directory. If the directory does not
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exist, it is created.
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required: false
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default: no
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choices: ['yes', 'no']
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version_added: "2.2"
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config:
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description:
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- The C(config) argument allows the playbook desginer to supply
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the base configuration to be used to validate configuration
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changes necessary. If this argument is provided, the module
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will not download the running-config from the remote node.
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required: false
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default: null
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version_added: "2.2"
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defaults:
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description:
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- This argument specifies whether or not to collect all defaults
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when getting the remote device running config. When enabled,
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the module will get the current config by issuing the command
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C(show running-config all).
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required: false
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default: no
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choices: ['yes', 'no']
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version_added: "2.2"
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save:
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description:
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- The C(save) argument instructs the module to save the running-
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config to the startup-config at the conclusion of the module
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running. If check mode is specified, this argument is ignored.
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required: false
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default: no
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choices: ['yes', 'no']
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version_added: "2.2"
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"""
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EXAMPLES = """
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# Note: examples below use the following provider dict to handle
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# transport and authentication to the node.
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vars:
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cli:
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host: "{{ inventory_hostname }}"
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username: cisco
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password: cisco
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transport: cli
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- name: configure top level configuration
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ios_config:
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lines: hostname {{ inventory_hostname }}
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provider: "{{ cli }}"
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- name: configure interface settings
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ios_config:
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lines:
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- description test interface
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- ip address 172.31.1.1 255.255.255.0
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parents: interface Ethernet1
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provider: "{{ cli }}"
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- name: load new acl into device
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ios_config:
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lines:
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- 10 permit ip host 1.1.1.1 any log
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- 20 permit ip host 2.2.2.2 any log
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- 30 permit ip host 3.3.3.3 any log
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- 40 permit ip host 4.4.4.4 any log
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- 50 permit ip host 5.5.5.5 any log
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parents: ip access-list extended test
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before: no ip access-list extended test
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match: exact
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provider: "{{ cli }}"
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"""
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RETURN = """
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updates:
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description: The set of commands that will be pushed to the remote device
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returned: Only when lines is specified.
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type: list
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sample: ['...', '...']
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backup_path:
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description: The full path to the backup file
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returned: when backup is yes
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type: path
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sample: /playbooks/ansible/backup/ios_config.2016-07-16@22:28:34
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"""
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import re
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from ansible.module_utils.basic import get_exception
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from ansible.module_utils.ios import NetworkModule, NetworkError
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from ansible.module_utils.netcfg import NetworkConfig, dumps
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from ansible.module_utils.netcli import Command
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def check_args(module, warnings):
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if module.params['force']:
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warnings.append('The force argument is deprecated, please use '
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'match=none instead. This argument will be '
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'removed in the future')
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def get_config(module, result):
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contents = module.params['config']
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if not contents:
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defaults = module.params['defaults']
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contents = module.config.get_config(include_defaults=defaults)
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return NetworkConfig(indent=1, contents=contents)
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def get_candidate(module):
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candidate = NetworkConfig(indent=1)
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if module.params['src']:
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candidate.load(module.params['src'])
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elif module.params['lines']:
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parents = module.params['parents'] or list()
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candidate.add(module.params['lines'], parents=parents)
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return candidate
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def load_backup(module):
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try:
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module.cli(['exit', 'config replace flash:/ansible-rollback force'])
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except NetworkError:
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module.fail_json(msg='unable to load backup configuration')
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def backup_config(module):
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cmd = 'copy running-config flash:/ansible-rollback'
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cmd = Command(cmd, prompt=re.compile('\? $'), response='\n')
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module.cli(cmd)
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def run(module, result):
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match = module.params['match']
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replace = module.params['replace']
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path = module.params['parents']
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candidate = get_candidate(module)
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if match != 'none':
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config = get_config(module, result)
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path = module.params['parents']
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configobjs = candidate.difference(config, path=path,match=match,
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replace=replace)
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else:
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configobjs = candidate.items
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if configobjs:
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commands = dumps(configobjs, 'commands').split('\n')
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if module.params['lines']:
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if module.params['before']:
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commands[:0] = module.params['before']
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if module.params['after']:
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commands.extend(module.params['after'])
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result['updates'] = commands
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# create a backup copy of the current running-config on
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# device flash drive
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backup_config(module)
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# send the configuration commands to the device and merge
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# them with the current running config
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if not module.check_mode:
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module.config(commands)
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result['changed'] = True
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# remove the backup copy of the running-config since its
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# no longer needed
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module.cli('delete /force flash:/ansible-rollback')
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if module.params['save']:
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if not module.check_mode:
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module.config.save_config()
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result['changed'] = True
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def main():
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""" main entry point for module execution
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"""
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argument_spec = dict(
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src=dict(type='path'),
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lines=dict(aliases=['commands'], type='list'),
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parents=dict(type='list'),
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before=dict(type='list'),
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after=dict(type='list'),
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match=dict(default='line', choices=['line', 'strict', 'exact', 'none']),
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replace=dict(default='line', choices=['line', 'block']),
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# this argument is deprecated in favor of setting match: none
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# it will be removed in a future version
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force=dict(default=False, type='bool'),
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config=dict(),
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defaults=dict(type='bool', default=False),
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backup=dict(type='bool', default=False),
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save=dict(default=False, type='bool'),
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)
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mutually_exclusive = [('lines', 'src')]
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required_if = [('match', 'strict', ['lines']),
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('match', 'exact', ['lines']),
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('replace', 'block', ['lines'])]
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module = NetworkModule(argument_spec=argument_spec,
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connect_on_load=False,
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mutually_exclusive=mutually_exclusive,
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required_if=required_if,
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supports_check_mode=True)
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if module.params['force'] is True:
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module.params['match'] = 'none'
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warnings = list()
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check_args(module, warnings)
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result = dict(changed=False, warnings=warnings)
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if module.params['backup']:
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result['__backup__'] = module.config.get_config()
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try:
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run(module, result)
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except NetworkError:
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load_backup(module)
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exc = get_exception()
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module.fail_json(msg=str(exc))
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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