mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-15 01:30:40 +00:00
329 lines
12 KiB
Python
329 lines
12 KiB
Python
# (c) 2016 Red Hat Inc.
|
|
# (c) 2017 Ansible Project
|
|
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
|
|
|
|
from __future__ import (absolute_import, division, print_function)
|
|
__metaclass__ = type
|
|
|
|
DOCUMENTATION = """
|
|
---
|
|
author: Ansible Networking Team
|
|
connection: netconf
|
|
short_description: Provides a persistent connection using the netconf protocol
|
|
description:
|
|
- This connection plugin provides a connection to remote devices over the
|
|
SSH NETCONF subsystem. This connection plugin is typically used by
|
|
network devices for sending and receiving RPC calls over NETCONF.
|
|
- Note this connection plugin requires ncclient to be installed on the
|
|
local Ansible controller.
|
|
version_added: "2.3"
|
|
requirements:
|
|
- ncclient
|
|
options:
|
|
host:
|
|
description:
|
|
- Specifies the remote device FQDN or IP address to establish the SSH
|
|
connection to.
|
|
default: inventory_hostname
|
|
vars:
|
|
- name: ansible_host
|
|
port:
|
|
type: int
|
|
description:
|
|
- Specifies the port on the remote device to listening for connections
|
|
when establishing the SSH connection.
|
|
default: 830
|
|
ini:
|
|
- section: defaults
|
|
key: remote_port
|
|
env:
|
|
- name: ANSIBLE_REMOTE_PORT
|
|
vars:
|
|
- name: ansible_port
|
|
network_os:
|
|
description:
|
|
- Configures the device platform network operating system. This value is
|
|
used to load a device specific netconf plugin. If this option is not
|
|
configured, then the default netconf plugin will be used.
|
|
vars:
|
|
- name: ansible_network_os
|
|
remote_user:
|
|
description:
|
|
- The username used to authenticate to the remote device when the SSH
|
|
connection is first established. If the remote_user is not specified,
|
|
the connection will use the username of the logged in user.
|
|
- Can be configured form the CLI via the C(--user) or C(-u) options
|
|
ini:
|
|
- section: defaults
|
|
key: remote_user
|
|
env:
|
|
- name: ANSIBLE_REMOTE_USER
|
|
vars:
|
|
- name: ansible_user
|
|
password:
|
|
description:
|
|
- Configures the user password used to authenticate to the remote device
|
|
when first establishing the SSH connection.
|
|
vars:
|
|
- name: ansible_password
|
|
- name: ansible_ssh_pass
|
|
private_key_file:
|
|
description:
|
|
- The private SSH key or certificate file used to to authenticate to the
|
|
remote device when first establishing the SSH connection.
|
|
ini:
|
|
- section: defaults
|
|
key: private_key_file
|
|
env:
|
|
- name: ANSIBLE_PRIVATE_KEY_FILE
|
|
vars:
|
|
- name: ansible_private_key_file
|
|
timeout:
|
|
type: int
|
|
description:
|
|
- Sets the connection time for the communicating with the remote device.
|
|
This timeout is used as the default timeout value when awaiting a
|
|
response after issuing a call to a RPC. If the RPC does not return in
|
|
timeout seconds, an error is generated.
|
|
default: 120
|
|
host_key_auto_add:
|
|
type: bool
|
|
description:
|
|
- By default, Ansible will prompt the user before adding SSH keys to the
|
|
known hosts file. Enabling this option, unknown host keys will
|
|
automatically be added to the known hosts file.
|
|
- Be sure to fully understand the security implications of enabling this
|
|
option on production systems as it could create a security vulnerability.
|
|
default: 'no'
|
|
ini:
|
|
- section: paramiko_connection
|
|
key: host_key_auto_add
|
|
env:
|
|
- name: ANSIBLE_HOST_KEY_AUTO_ADD
|
|
look_for_keys:
|
|
default: True
|
|
description:
|
|
- enables looking for ssh keys in the usual locations for ssh keys (e.g. :file:`~/.ssh/id_*`)
|
|
env:
|
|
- name: ANSIBLE_PARAMIKO_LOOK_FOR_KEYS
|
|
ini:
|
|
- section: paramiko_connection
|
|
key: look_for_keys
|
|
type: boolean
|
|
host_key_checking:
|
|
description: 'Set this to "False" if you want to avoid host key checking by the underlying tools Ansible uses to connect to the host'
|
|
type: boolean
|
|
default: True
|
|
env:
|
|
- name: ANSIBLE_HOST_KEY_CHECKING
|
|
- name: ANSIBLE_SSH_HOST_KEY_CHECKING
|
|
- name: ANSIBLE_NETCONF_HOST_KEY_CHECKING
|
|
ini:
|
|
- section: defaults
|
|
key: host_key_checking
|
|
- section: paramiko_connection
|
|
key: host_key_checking
|
|
vars:
|
|
- name: ansible_host_key_checking
|
|
- name: ansible_ssh_host_key_checking
|
|
- name: ansible_netconf_host_key_checking
|
|
persistent_connect_timeout:
|
|
type: int
|
|
description:
|
|
- Configures, in seconds, the amount of time to wait when trying to
|
|
initially establish a persistent connection. If this value expires
|
|
before the connection to the remote device is completed, the connection
|
|
will fail
|
|
default: 30
|
|
ini:
|
|
- section: persistent_connection
|
|
key: connect_timeout
|
|
env:
|
|
- name: ANSIBLE_PERSISTENT_CONNECT_TIMEOUT
|
|
vars:
|
|
- name: ansible_connect_timeout
|
|
persistent_command_timeout:
|
|
type: int
|
|
description:
|
|
- Configures, in seconds, the amount of time to wait for a command to
|
|
return from the remote device. If this timer is exceeded before the
|
|
command returns, the connection plugin will raise an exception and
|
|
close
|
|
default: 10
|
|
ini:
|
|
- section: persistent_connection
|
|
key: command_timeout
|
|
env:
|
|
- name: ANSIBLE_PERSISTENT_COMMAND_TIMEOUT
|
|
vars:
|
|
- name: ansible_command_timeout
|
|
netconf_ssh_config:
|
|
description:
|
|
- This variable is used to enable bastion/jump host with netconf connection. If set to
|
|
True the bastion/jump host ssh settings should be present in ~/.ssh/config file,
|
|
alternatively it can be set to custom ssh configuration file path to read the
|
|
bastion/jump host settings.
|
|
ini:
|
|
- section: netconf_connection
|
|
key: ssh_config
|
|
version_added: '2.7'
|
|
env:
|
|
- name: ANSIBLE_NETCONF_SSH_CONFIG
|
|
vars:
|
|
- name: ansible_netconf_ssh_config
|
|
version_added: '2.7'
|
|
"""
|
|
|
|
import os
|
|
import logging
|
|
import json
|
|
|
|
from ansible.errors import AnsibleConnectionFailure, AnsibleError
|
|
from ansible.module_utils._text import to_bytes, to_native, to_text
|
|
from ansible.module_utils.parsing.convert_bool import BOOLEANS_TRUE, BOOLEANS_FALSE
|
|
from ansible.plugins.loader import netconf_loader
|
|
from ansible.plugins.connection import NetworkConnectionBase
|
|
|
|
try:
|
|
from ncclient import manager
|
|
from ncclient.operations import RPCError
|
|
from ncclient.transport.errors import SSHUnknownHostError
|
|
from ncclient.xml_ import to_ele, to_xml
|
|
HAS_NCCLIENT = True
|
|
except ImportError:
|
|
HAS_NCCLIENT = False
|
|
|
|
try:
|
|
from __main__ import display
|
|
except ImportError:
|
|
from ansible.utils.display import Display
|
|
display = Display()
|
|
|
|
logging.getLogger('ncclient').setLevel(logging.INFO)
|
|
|
|
NETWORK_OS_DEVICE_PARAM_MAP = {
|
|
"nxos": "nexus",
|
|
"ios": "default",
|
|
"sros": "alu",
|
|
"ce": "huawei"
|
|
}
|
|
|
|
|
|
class Connection(NetworkConnectionBase):
|
|
"""NetConf connections"""
|
|
|
|
transport = 'netconf'
|
|
has_pipelining = False
|
|
|
|
def __init__(self, play_context, new_stdin, *args, **kwargs):
|
|
super(Connection, self).__init__(play_context, new_stdin, *args, **kwargs)
|
|
|
|
self._network_os = self._network_os or 'default'
|
|
display.display('network_os is set to %s' % self._network_os, log_only=True)
|
|
|
|
self._manager = None
|
|
self.key_filename = None
|
|
|
|
def exec_command(self, cmd, in_data=None, sudoable=True):
|
|
"""Sends the request to the node and returns the reply
|
|
The method accepts two forms of request. The first form is as a byte
|
|
string that represents xml string be send over netconf session.
|
|
The second form is a json-rpc (2.0) byte string.
|
|
"""
|
|
if self._manager:
|
|
# to_ele operates on native strings
|
|
request = to_ele(to_native(cmd, errors='surrogate_or_strict'))
|
|
|
|
if request is None:
|
|
return 'unable to parse request'
|
|
|
|
try:
|
|
reply = self._manager.rpc(request)
|
|
except RPCError as exc:
|
|
error = self.internal_error(data=to_text(to_xml(exc.xml), errors='surrogate_or_strict'))
|
|
return json.dumps(error)
|
|
|
|
return reply.data_xml
|
|
else:
|
|
return super(Connection, self).exec_command(cmd, in_data, sudoable)
|
|
|
|
def _connect(self):
|
|
if not HAS_NCCLIENT:
|
|
raise AnsibleError(
|
|
'ncclient is required to use the netconf connection type.\n'
|
|
'Please run pip install ncclient'
|
|
)
|
|
|
|
super(Connection, self)._connect()
|
|
display.display('ssh connection done, starting ncclient', log_only=True)
|
|
|
|
allow_agent = True
|
|
if self._play_context.password is not None:
|
|
allow_agent = False
|
|
setattr(self._play_context, 'allow_agent', allow_agent)
|
|
|
|
self.key_filename = self._play_context.private_key_file or self.get_option('private_key_file')
|
|
if self.key_filename:
|
|
self.key_filename = str(os.path.expanduser(self.key_filename))
|
|
|
|
if self._network_os == 'default':
|
|
for cls in netconf_loader.all(class_only=True):
|
|
network_os = cls.guess_network_os(self)
|
|
if network_os:
|
|
display.display('discovered network_os %s' % network_os, log_only=True)
|
|
self._network_os = network_os
|
|
|
|
device_params = {'name': NETWORK_OS_DEVICE_PARAM_MAP.get(self._network_os) or self._network_os}
|
|
|
|
ssh_config = self.get_option('netconf_ssh_config')
|
|
if ssh_config in BOOLEANS_TRUE:
|
|
ssh_config = True
|
|
elif ssh_config in BOOLEANS_FALSE:
|
|
ssh_config = None
|
|
|
|
try:
|
|
port = self._play_context.port or 830
|
|
display.vvvv("ESTABLISH NETCONF SSH CONNECTION FOR USER: %s on PORT %s TO %s" %
|
|
(self._play_context.remote_user, port, self._play_context.remote_addr))
|
|
self._manager = manager.connect(
|
|
host=self._play_context.remote_addr,
|
|
port=port,
|
|
username=self._play_context.remote_user,
|
|
password=self._play_context.password,
|
|
key_filename=self.key_filename,
|
|
hostkey_verify=self.get_option('host_key_checking'),
|
|
look_for_keys=self.get_option('look_for_keys'),
|
|
device_params=device_params,
|
|
allow_agent=self._play_context.allow_agent,
|
|
timeout=self._play_context.timeout,
|
|
ssh_config=ssh_config
|
|
)
|
|
except SSHUnknownHostError as exc:
|
|
raise AnsibleConnectionFailure(str(exc))
|
|
except ImportError as exc:
|
|
raise AnsibleError("connection=netconf is not supported on {0}".format(self._network_os))
|
|
|
|
if not self._manager.connected:
|
|
return 1, b'', b'not connected'
|
|
|
|
display.display('ncclient manager object created successfully', log_only=True)
|
|
|
|
self._connected = True
|
|
|
|
netconf = netconf_loader.get(self._network_os, self)
|
|
if netconf:
|
|
display.display('loaded netconf plugin for network_os %s' % self._network_os, log_only=True)
|
|
else:
|
|
netconf = netconf_loader.get("default", self)
|
|
display.display('unable to load netconf plugin for network_os %s, falling back to default plugin' % self._network_os)
|
|
self._implementation_plugins.append(netconf)
|
|
|
|
super(Connection, self)._connect()
|
|
|
|
return 0, to_bytes(self._manager.session_id, errors='surrogate_or_strict'), b''
|
|
|
|
def close(self):
|
|
if self._manager:
|
|
self._manager.close_session()
|
|
super(Connection, self).close()
|