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ansible-role-mongodb/library/mongodb_user.py

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#!/usr/bin/python
# (c) 2012, Elliott Foster <elliott@fourkitchens.com>
# Sponsored by Four Kitchens http://fourkitchens.com.
# (c) 2014, Epic Games, Inc.
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
DOCUMENTATION = '''
---
module: mongodb_user
short_description: Adds or removes a user from a MongoDB database.
description:
- Adds or removes a user from a MongoDB database.
version_added: "1.1"
options:
login_user:
description:
- The username used to authenticate with
required: false
default: null
login_password:
description:
- The password used to authenticate with
required: false
default: null
login_host:
description:
- The host running the database
required: false
default: localhost
login_port:
description:
- The port to connect to
required: false
default: 27017
login_database:
version_added: "2.0"
description:
- The database where login credentials are stored
required: false
default: null
replica_set:
version_added: "1.6"
description:
- Replica set to connect to (automatically connects to primary for writes)
required: false
default: null
database:
description:
- The name of the database to add/remove the user from
required: true
name:
description:
- The name of the user to add or remove
required: true
default: null
aliases: [ 'user' ]
password:
description:
- The password to use for the user
required: false
default: null
ssl:
version_added: "1.8"
description:
- Whether to use an SSL connection when connecting to the database
default: False
roles:
version_added: "1.3"
description:
- "The database user roles valid values could either be one or more of the following strings: 'read', 'readWrite', 'dbAdmin', 'userAdmin', 'clusterAdmin', 'readAnyDatabase', 'readWriteAnyDatabase', 'userAdminAnyDatabase', 'dbAdminAnyDatabase'"
- "Or the following dictionary '{ db: DATABASE_NAME, role: ROLE_NAME }'."
- "This param requires pymongo 2.5+. If it is a string, mongodb 2.4+ is also required. If it is a dictionary, mongo 2.6+ is required."
required: false
default: "readWrite"
state:
state:
description:
- The database user state
required: false
default: present
choices: [ "present", "absent" ]
update_password:
required: false
default: always
choices: ['always', 'on_create']
version_added: "2.1"
description:
- C(always) will update passwords if they differ. C(on_create) will only set the password for newly created users.
notes:
- Requires the pymongo Python package on the remote host, version 2.4.2+. This
can be installed using pip or the OS package manager. @see http://api.mongodb.org/python/current/installation.html
requirements: [ "pymongo" ]
author: "Elliott Foster (@elliotttf)"
'''
EXAMPLES = '''
# Create 'burgers' database user with name 'bob' and password '12345'.
- mongodb_user: database=burgers name=bob password=12345 state=present
# Create a database user via SSL (MongoDB must be compiled with the SSL option and configured properly)
- mongodb_user: database=burgers name=bob password=12345 state=present ssl=True
# Delete 'burgers' database user with name 'bob'.
- mongodb_user: database=burgers name=bob state=absent
# Define more users with various specific roles (if not defined, no roles is assigned, and the user will be added via pre mongo 2.2 style)
- mongodb_user: database=burgers name=ben password=12345 roles='read' state=present
- mongodb_user: database=burgers name=jim password=12345 roles='readWrite,dbAdmin,userAdmin' state=present
- mongodb_user: database=burgers name=joe password=12345 roles='readWriteAnyDatabase' state=present
# add a user to database in a replica set, the primary server is automatically discovered and written to
- mongodb_user: database=burgers name=bob replica_set=belcher password=12345 roles='readWriteAnyDatabase' state=present
# add a user 'oplog_reader' with read only access to the 'local' database on the replica_set 'belcher'. This is usefull for oplog access (MONGO_OPLOG_URL).
# please notice the credentials must be added to the 'admin' database because the 'local' database is not syncronized and can't receive user credentials
# To login with such user, the connection string should be MONGO_OPLOG_URL="mongodb://oplog_reader:oplog_reader_password@server1,server2/local?authSource=admin"
# This syntax requires mongodb 2.6+ and pymongo 2.5+
- mongodb_user:
login_user: root
login_password: root_password
database: admin
user: oplog_reader
password: oplog_reader_password
state: present
replica_set: belcher
roles:
- { db: "local" , role: "read" }
'''
import ConfigParser
from distutils.version import LooseVersion
try:
from pymongo.errors import ConnectionFailure
from pymongo.errors import OperationFailure
from pymongo import version as PyMongoVersion
from pymongo import MongoClient
except ImportError:
try: # for older PyMongo 2.2
from pymongo import Connection as MongoClient
except ImportError:
pymongo_found = False
else:
pymongo_found = True
else:
pymongo_found = True
# =========================================
# MongoDB module specific support methods.
#
def check_compatibility(module, client):
srv_info = client.server_info()
if LooseVersion(srv_info['version']) >= LooseVersion('3.2') and LooseVersion(PyMongoVersion) <= LooseVersion('3.2'):
module.fail_json(msg=' (Note: you must use pymongo 3.2+ with MongoDB >= 3.2)')
elif LooseVersion(srv_info['version']) >= LooseVersion('3.0') and LooseVersion(PyMongoVersion) <= LooseVersion('2.8'):
module.fail_json(msg=' (Note: you must use pymongo 2.8+ with MongoDB 3.0)')
elif LooseVersion(srv_info['version']) >= LooseVersion('2.6') and LooseVersion(PyMongoVersion) <= LooseVersion('2.7'):
module.fail_json(msg=' (Note: you must use pymongo 2.7+ with MongoDB 2.6)')
elif LooseVersion(PyMongoVersion) <= LooseVersion('2.5'):
module.fail_json(msg=' (Note: you must be on mongodb 2.4+ and pymongo 2.5+ to use the roles param)')
def user_find(client, user, db_name):
for mongo_user in client["admin"].system.users.find():
if mongo_user['user'] == user and mongo_user['db'] == db_name:
return mongo_user
return False
def user_add(module, client, db_name, user, password, roles):
#pymongo's user_add is a _create_or_update_user so we won't know if it was changed or updated
#without reproducing a lot of the logic in database.py of pymongo
db = client[db_name]
if roles is None:
db.add_user(user, password, False)
else:
try:
db.add_user(user, password, None, roles=roles)
except OperationFailure, e:
err_msg = str(e)
module.fail_json(msg=err_msg)
def user_remove(module, client, db_name, user):
exists = user_find(client, user, db_name)
if exists:
if module.check_mode:
module.exit_json(changed=True, user=user)
db = client[db_name]
db.remove_user(user)
else:
module.exit_json(changed=False, user=user)
def load_mongocnf():
config = ConfigParser.RawConfigParser()
mongocnf = os.path.expanduser('~/.mongodb.cnf')
try:
config.readfp(open(mongocnf))
creds = dict(
user=config.get('client', 'user'),
password=config.get('client', 'pass')
)
except (ConfigParser.NoOptionError, IOError):
return False
return creds
def check_if_roles_changed(uinfo, roles, db_name):
# We must be aware of users which can read the oplog on a replicaset
# Such users must have access to the local DB, but since this DB does not store users credentials
# and is not synchronized among replica sets, the user must be stored on the admin db
# Therefore their structure is the following :
# {
# "_id" : "admin.oplog_reader",
# "user" : "oplog_reader",
# "db" : "admin", # <-- admin DB
# "roles" : [
# {
# "role" : "read",
# "db" : "local" # <-- local DB
# }
# ]
# }
def make_sure_roles_are_a_list_of_dict(roles, db_name):
output = list()
for role in roles:
if isinstance(role, basestring):
new_role = { "role": role, "db": db_name }
output.append(new_role)
else:
output.append(role)
return output
roles_as_list_of_dict = make_sure_roles_are_a_list_of_dict(roles, db_name)
uinfo_roles = uinfo.get('roles', [])
if sorted(roles_as_list_of_dict) == sorted(uinfo_roles):
return False
return True
# =========================================
# Module execution.
#
def main():
module = AnsibleModule(
argument_spec = dict(
login_user=dict(default=None),
login_password=dict(default=None),
login_host=dict(default='localhost'),
login_port=dict(default='27017'),
login_database=dict(default=None),
replica_set=dict(default=None),
database=dict(required=True, aliases=['db']),
name=dict(required=True, aliases=['user']),
password=dict(aliases=['pass']),
ssl=dict(default=False, type='bool'),
roles=dict(default=None, type='list'),
state=dict(default='present', choices=['absent', 'present']),
update_password=dict(default="always", choices=["always", "on_create"]),
),
supports_check_mode=True
)
if not pymongo_found:
module.fail_json(msg='the python pymongo module is required')
login_user = module.params['login_user']
login_password = module.params['login_password']
login_host = module.params['login_host']
login_port = module.params['login_port']
login_database = module.params['login_database']
replica_set = module.params['replica_set']
db_name = module.params['database']
user = module.params['name']
password = module.params['password']
ssl = module.params['ssl']
roles = module.params['roles']
state = module.params['state']
update_password = module.params['update_password']
try:
if replica_set:
client = MongoClient(login_host, int(login_port), replicaset=replica_set, ssl=ssl)
else:
client = MongoClient(login_host, int(login_port), ssl=ssl)
if login_user is None and login_password is None:
mongocnf_creds = load_mongocnf()
if mongocnf_creds is not False:
login_user = mongocnf_creds['user']
login_password = mongocnf_creds['password']
elif login_password is None or login_user is None:
module.fail_json(msg='when supplying login arguments, both login_user and login_password must be provided')
if login_user is not None and login_password is not None:
client.admin.authenticate(login_user, login_password, source=login_database)
elif LooseVersion(PyMongoVersion) >= LooseVersion('3.0'):
if db_name != "admin":
module.fail_json(msg='The localhost login exception only allows the first admin account to be created')
#else: this has to be the first admin user added
except ConnectionFailure, e:
module.fail_json(msg='unable to connect to database: %s' % str(e))
check_compatibility(module, client)
if state == 'present':
if password is None and update_password == 'always':
module.fail_json(msg='password parameter required when adding a user unless update_password is set to on_create')
uinfo = user_find(client, user, db_name)
if update_password != 'always' and uinfo:
password = None
if not check_if_roles_changed(uinfo, roles, db_name):
module.exit_json(changed=False, user=user)
if module.check_mode:
module.exit_json(changed=True, user=user)
try:
user_add(module, client, db_name, user, password, roles)
except OperationFailure, e:
module.fail_json(msg='Unable to add or update user: %s' % str(e))
# Here we can check password change if mongo provide a query for that : https://jira.mongodb.org/browse/SERVER-22848
#newuinfo = user_find(client, user, db_name)
#if uinfo['role'] == newuinfo['role'] and CheckPasswordHere:
# module.exit_json(changed=False, user=user)
elif state == 'absent':
try:
user_remove(module, client, db_name, user)
except OperationFailure, e:
module.fail_json(msg='Unable to remove user: %s' % str(e))
module.exit_json(changed=True, user=user)
# import module snippets
from ansible.module_utils.basic import *
main()
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