1 # Copyright (c) 2017 Cable Television Laboratories, Inc. ("CableLabs")
2 # and others. All rights reserved.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
17 from collections import namedtuple
23 from ansible.parsing.dataloader import DataLoader
24 from ansible.vars import VariableManager
25 from ansible.inventory import Inventory
26 from ansible.executor.playbook_executor import PlaybookExecutor
30 __author__ = 'spisarski'
32 logger = logging.getLogger('ansible_utils')
35 def apply_playbook(playbook_path, hosts_inv, host_user, ssh_priv_key_file_path, variables=None, proxy_setting=None):
37 Executes an Ansible playbook to the given host
38 :param playbook_path: the (relative) path to the Ansible playbook
39 :param hosts_inv: a list of hostnames/ip addresses to which to apply the Ansible playbook
40 :param host_user: A user for the host instances (must be a password-less sudo user if playbook has "sudo: yes"
41 :param ssh_priv_key_file_path: the file location of the ssh key
42 :param variables: a dictionary containing any substitution variables needed by the Jinga 2 templates
43 :param proxy_setting: instance of os_credentials.ProxySettings class
46 if not os.path.isfile(playbook_path):
47 raise Exception('Requested playbook not found - ' + playbook_path)
48 if not os.path.isfile(ssh_priv_key_file_path):
49 raise Exception('Requested private SSH key not found - ' + ssh_priv_key_file_path)
51 import ansible.constants
52 ansible.constants.HOST_KEY_CHECKING = False
54 variable_manager = VariableManager()
56 variable_manager.extra_vars = variables
59 inventory = Inventory(loader=loader, variable_manager=variable_manager, host_list=hosts_inv)
60 variable_manager.set_inventory(inventory)
63 if proxy_setting and proxy_setting.ssh_proxy_cmd:
64 ssh_extra_args = '-o ProxyCommand=\'' + proxy_setting.ssh_proxy_cmd + '\''
66 options = namedtuple('Options', ['listtags', 'listtasks', 'listhosts', 'syntax', 'connection', 'module_path',
67 'forks', 'remote_user', 'private_key_file', 'ssh_common_args', 'ssh_extra_args',
68 'become', 'become_method', 'become_user', 'verbosity', 'check'])
70 ansible_opts = options(listtags=False, listtasks=False, listhosts=False, syntax=False, connection='ssh',
71 module_path=None, forks=100, remote_user=host_user, private_key_file=ssh_priv_key_file_path,
72 ssh_common_args=None, ssh_extra_args=ssh_extra_args, become=None, become_method=None,
73 become_user=None, verbosity=11111, check=False)
75 logger.debug('Setting up Ansible Playbook Executor for playbook - ' + playbook_path)
76 executor = PlaybookExecutor(
77 playbooks=[playbook_path],
79 variable_manager=variable_manager,
84 logger.debug('Executing Ansible Playbook - ' + playbook_path)
88 def ssh_client(ip, user, private_key_filepath, proxy_settings=None):
90 Retrieves and attemts an SSH connection
91 :param ip: the IP of the host to connect
92 :param user: the user with which to connect
93 :param private_key_filepath: the path to the private key file
94 :param proxy_settings: instance of os_credentials.ProxySettings class (optional)
95 :return: the SSH client if can connect else false
97 logger.debug('Retrieving SSH client')
98 ssh = paramiko.SSHClient()
99 ssh.set_missing_host_key_policy(paramiko.MissingHostKeyPolicy())
103 if proxy_settings and proxy_settings.ssh_proxy_cmd:
104 proxy_cmd_str = str(proxy_settings.ssh_proxy_cmd.replace('%h', ip))
105 proxy_cmd_str = proxy_cmd_str.replace("%p", '22')
106 proxy_cmd = paramiko.ProxyCommand(proxy_cmd_str)
108 ssh.connect(ip, username=user, key_filename=private_key_filepath, sock=proxy_cmd)
110 except Exception as e:
111 logger.warning('Unable to connect via SSH with message - ' + str(e))