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Amazon RDS module

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Bruce Pennypacker 2013-06-10 12:17:31 -04:00
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#!/usr/bin/python
# 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: rds
short_description: create or delete an Amazon rds instance
description:
- Creates or deletes rds instances. When creating an instance it can be either a new instance or a read-only replica of an existing instance. This module has a dependency on python-boto >= 2.5.
options:
action:
description:
- Specifies the action to take. Must be one of: create | replicate | delete
required: true
default: null
aliases: []
instance_name:
description:
- Database instance identifier.
required: true
default: null
aliases: []
source_instance:
description:
- Name of the database to replicate. Used only when action=replicate.
required: false
default: null
aliases: []
db_engine:
description:
- The type of database. Used only when action=create. Must be one of: MySQL | oracle-se1 | oracle-se | oracle-ee | sqlserver-ee | sqlserver-se | sqlserver-ex | sqlserver-web
required: false
default: null
aliases: []
size:
description:
- Size in gigabytes of the initial storage for the DB instance. Used only when action=create.
required: false
default: null
aliases: []
instance_type:
description:
- The instance type of the database. Must be specified when action=create. Optional when action=replicate. If not specified then the replica inherits the same instance type as the source instance. Must be one of: db.t1.micro | db.m1.small | db.m1.medium | db.m1.large | db.m1.xlarge | db.m2.xlarge | db.m2.2xlarge | db.m2.4xlarge
required: false
default: null
aliases: []
username:
description:
- Master database username. Used only when action=create.
required: false
default: null
aliases: []
password:
description:
- Password for the master database username. Used only when action=create.
required: false
default: null
aliases: []
ec2_region:
description:
- the EC2 region to use. If not specified then the EC2_REGION environment variable is used. If neither exist then the AWS is queried for the region that the host invoking the module is located in.
required: true
default: null
aliases: []
db_name:
description:
- Name of a database to create within the instance. If not specified then no database is created. Used only when action=create.
required: false
default: null
aliases: []
engine_version:
description:
- Version number of the database engine to use. Used only when action=create. If not specified then the current Amazon RDS default engine version is used.
required: false
default: null
aliases: []
parameter_group:
description:
- Name of the DB parameter group to associate with this instance. If omitted then the RDS default DBParameterGroup will be used. Used only when action=create.
required: false
default: null
aliases: []
license_model:
description:
- The license model for this DB instance. Used only when action=create. Must be one of: license-included | bring-your-own-license | general-public-license
required: false
default: null
aliases: []
multi_zone:
description:
- Specifies if this is a Multi-availability-zone deployment. Can not be used in conjunction with zone parameter. Used only when action=create. Valid values: true | false
required: false
default: null
aliases: []
iops:
description:
- Specifies the number of IOPS for the instance. Used only when action=create. Must be an integer greater than 1000.
required: false
default: null
aliases: []
security_groups:
description:
- Comma separated list of one or more security groups. Used only when action=create. If a subnet is specified then this is treated as a list of VPC security groups.
required: false
default: null
aliases: []
port:
description:
- Port number that the DB instance uses for connections. Defaults to 3306 for mysql, 1521 for Oracle, 1443 for SQL Server. Used only when action=create or action=replicate.
required: false
default: null
aliases: []
upgrade:
description:
- Indicates that minor version upgrades should be applied automatically. Used only when action=create or action=replicate.
required: false
default: no
choices: [ "yes", "no" ]
aliases: []
option_group:
description:
- The name of the option group to use. If not specified then the default option group is used. Used only when action=create.
required: false
default: null
aliases: []
maint_window:
description:
- Maintenance window in format of ddd:hh24:mi-ddd:hh24:mi. (Example: Mon:22:00-Mon:23:15) If not specified then a random maintenance window is assigned. Used only when action=create.
required: false
default: null
aliases: []
backup_window:
description:
- Backup window in format of hh24:mi-hh24:mi. If not specified then a random backup window is assigned. Used only when action=create.
required: false
default: null
aliases: []
backup_retention:
description:
- Number of days backups are retained. Set to 0 to disable backups. Default is 1 day. Valid range: 0-35. Used only when action=create.
required: false
default: null
aliases: []
zone:
description:
- availability zone in which to launch the instance. Used only when action=create or action=replicate.
required: false
default: null
aliases: []
subnet:
description:
- VPC subnet group. If specified then a VPC instance is created. Used only when action=create.
required: false
default: null
aliases: []
snapshot:
description:
- Name of final snapshot to take when deleting an instance. If no snapshot name is provided then no snapshot is taken. Used only when action=delete.
required: false
default: null
aliases: []
ec2_secret_key:
description:
- EC2 secret key. If not specified then the EC2_SECRET_KEY environment variable is used.
required: false
default: null
aliases: []
ec2_access_key:
description:
- EC2 access key. If not specified then the EC2_ACCESS_KEY environment variable is used.
required: false
default: null
aliases: []
wait:
description:
- When action=create or action=replicate, wait for the database to enter the 'available' state. When action=delete wait for the database to be terminated.
required: false
default: "no"
choices: [ "yes", "no" ]
aliases: []
wait_timeout:
description:
- how long before wait gives up, in seconds
default: 300
aliases: []
requirements: [ "boto" ]
author: Bruce Pennypacker
'''
EXAMPLES = '''
# Basic mysql provisioning example
action: rds
action=create
instance_name=new_database
db_engine=MySQL
size=10
instance_type=db.m1.small
username=mysql_admin
password=1nsecure
# Create a read-only replica and wait for it to become available
action: rds
action=replicate
instance_name=new_database_replica
source_instance=new_database
wait=yes
wait_timeout=600
# Delete an instance, but create a snapshot before doing so
action: rds
action=delete
instance_name=new_database
snapshot=new_database_snapshot
'''
import sys
import time
AWS_REGIONS = ['ap-northeast-1',
'ap-southeast-1',
'ap-southeast-2',
'eu-west-1',
'sa-east-1',
'us-east-1',
'us-west-1',
'us-west-2']
try:
import boto.rds
except ImportError:
print "failed=True msg='boto required for this module'"
sys.exit(1)
try:
import urllib2
except ImportError:
print "failed=True msg='urllib2 required for this module'"
sys.exit(1)
def main():
module = AnsibleModule(
argument_spec = dict(
action = dict(choices=['create', 'replicate', 'delete'], required=True),
instance_name = dict(required=True),
source_instance = dict(required=False),
db_engine = dict(choices=['MySQL', 'oracle-se1', 'oracle-se', 'oracle-ee', 'sqlserver-ee', 'sqlserver-se', 'sqlserver-ex', 'sqlserver-web'], required=False),
size = dict(required=False),
instance_type = dict(aliases=['type'], choices=['db.t1.micro', 'db.m1.small', 'db.m1.medium', 'db.m1.large', 'db.m1.xlarge', 'db.m2.xlarge', 'db.m2.2xlarge', 'db.m2.4xlarge'], required=False),
username = dict(required=False),
password = dict(no_log=True, required=False),
db_name = dict(required=False),
engine_version = dict(required=False),
parameter_group = dict(required=False),
license_model = dict(choices=['license-included', 'bring-your-own-license', 'general-public-license'], required=False),
multi_zone = dict(choices=BOOLEANS, default=False),
iops = dict(required=False),
security_groups = dict(required=False),
port = dict(required=False),
upgrade = dict(choices=BOOLEANS, default=False),
option_group = dict(required=False),
maint_window = dict(required=False),
backup_window = dict(required=False),
backup_retention = dict(required=False),
ec2_region = dict(aliases=['EC2_REGION'], choices=AWS_REGIONS, required=False),
zone = dict(required=False),
subnet = dict(required=False),
ec2_secret_key = dict(aliases=['EC2_SECRET_KEY'], no_log=True, required=False),
ec2_access_key = dict(aliases=['EC2_ACCESS_KEY'], required=False),
wait = dict(choices=BOOLEANS, default=False),
wait_timeout = dict(default=300),
snapshot = dict(required=False),
)
)
action = module.params.get('action')
instance_name = module.params.get('instance_name');
source_instance = module.params.get('source_instance');
db_engine = module.params.get('db_engine');
size = module.params.get('size');
instance_type = module.params.get('instance_type');
username = module.params.get('username');
password = module.params.get('password');
db_name = module.params.get('db_name');
engine_version = module.params.get('engine_version');
parameter_group = module.params.get('parameter_group');
license_model = module.params.get('license_model');
multi_zone = module.params.get('multi_zone');
iops = module.params.get('iops');
security_groups = module.params.get('security_groups');
port = module.params.get('port');
upgrade = module.params.get('upgrade');
option_group = module.params.get('option_group');
maint_window = module.params.get('maint_window');
subnet = module.params.get('subnet');
backup_window = module.params.get('backup_window');
backup_retention = module.params.get('module_retention');
ec2_region = module.params.get('ec2_region')
zone = module.params.get('zone')
ec2_secret_key = module.params.get('ec2_secret_key')
ec2_access_key = module.params.get('ec2_access_key')
wait = module.params.get('wait')
wait_timeout = int(module.params.get('wait_timeout'))
snapshot = module.params.get('snapshot')
# allow environment variables to be used if ansible vars aren't set
if not ec2_secret_key and 'EC2_SECRET_KEY' in os.environ:
ec2_secret_key = os.environ['EC2_SECRET_KEY']
if not ec2_access_key and 'EC2_ACCESS_KEY' in os.environ:
ec2_access_key = os.environ['EC2_ACCESS_KEY']
if not ec2_region and 'EC2_REGION' in os.environ:
ec2_region = os.environ['EC2_REGION']
# If region isn't set either as a param or environ variable then
# look up the current region via the AWS URL
if not ec2_region:
response = urllib2.urlopen('http://169.254.169.254/latest/meta-data/placement/availability-zone')
az = response.read()
for r in AWS_REGIONS:
if az.startswith(r):
ec2_region = r
break
if not ec2_region:
module.fail_json(msg = str("ec2_region not specified and unable to determine region from AWS."))
# connect to the rds endpoint
try:
conn = boto.rds.connect_to_region(ec2_region, aws_access_key_id=ec2_access_key, aws_secret_access_key=ec2_secret_key)
except boto.exception.BotoServerError, e:
module.fail_json(msg = e.error_message)
# Validate parameters for each action
if action == 'create':
required_vars = [ 'instance_name', 'db_engine', 'size', 'instance_type', 'username', 'password' ]
invalid_vars = [ 'source_instance', 'snapshot' ]
elif action == 'replicate':
required_vars = [ 'instance_name', 'source_instance' ]
invalid_vars = [ 'db_engine', 'size', 'username', 'password', 'db_name', 'engine_version', 'parameter_group', 'license_model', 'multi_zone', 'iops', 'security_groups', 'option_group', 'maint_window', 'backup_window', 'backup_retention', 'subnet', 'snapshot']
elif action == 'delete':
required_vars = [ 'instance_name' ]
invalid_vars = [ 'db_engine', 'size', 'instance_type', 'username', 'password', 'db_name', 'engine_version', 'parameter_group', 'license_model', 'multi_zone', 'iops', 'security_groups', 'option_group', 'maint_window', 'backup_window', 'backup_retention', 'port', 'upgrade', 'subnet', 'zone' ]
for v in required_vars:
if not module.params.get(v):
module.fail_json(msg = str("Variable %s required for %s action" % (v, action)))
for v in invalid_vars:
if module.params.get(v):
module.fail_json(msg = str("Variable %s invalid for %s action" % (v, action)))
# Package up the optional parameters
params = {}
if db_engine:
params["engine"] = db_engine
if port:
params["port"] = port
if db_name:
params["db_name"] = db_name
if parameter_group:
params["param_group"] = parameter_group
if zone:
params["availability_zone"] = zone
if maint_window:
params["preferred_maintenance_window"] = maint_window
if backup_window:
params["preferred_backup_window"] = backup_window
if backup_retention:
params["backup_retention_period"] = backup_retention
if multi_zone:
params["multi_az"] = multi_zone
if engine_version:
params["engine_version"] = engine_version
if upgrade:
params["auto_minor_version_upgrade"] = upgrade
if subnet:
params["db_subnet_group_name"] = subnet
if license_model:
params["license_model"] = license_model
if option_group:
params["option_group_name"] = option_group
if iops:
params["iops"] = iops
if security_groups:
params["security_groups"] = security_groups.split(',')
try:
if action == 'create':
db = conn.create_dbinstance(instance_name, size, instance_type, username, password, **params)
elif action == 'replicate':
if instance_type:
params["instance_class"] = instance_type
db = conn.create_dbinstance_read_replica(instance_name, source_instance, **params)
elif action == 'delete':
if snapshot:
params["skip_final_snapshot"] = False
params["final_snapshot_id"] = snapshot
db = conn.delete_dbinstance(instance_name, **params)
except boto.exception.BotoServerError, e:
module.fail_json(msg = e.error_message)
# If we're not waiting for a delete to complete then we're all done
# so just return
if action == 'delete' and not wait:
module.exit_json(changed=True)
instances = conn.get_all_dbinstances(instance_name)
my_inst = instances[0]
# Wait for the instance to be available if requested
if wait:
try:
wait_timeout = time.time() + wait_timeout
time.sleep(5)
while wait_timeout > time.time() and my_inst.status != 'available':
time.sleep(5)
if wait_timeout <= time.time():
module.fail_json(msg = "Timeout waiting for database instance %s" % instance_name)
instances = conn.get_all_dbinstances(instance_name)
my_inst = instances[0]
except boto.exception.BotoServerError, e:
# If we're waiting for an instance to be deleted then
# get_all_dbinstances will eventually throw a
# DBInstanceNotFound error.
if action == 'delete' and e.error_code == 'DBInstanceNotFound':
module.exit_json(changed=True)
else:
module.fail_json(msg = e.error_message)
# If we got here then pack up all the instance details to send
# back to ansible
d = {
'id': my_inst.id,
'create_time': my_inst.create_time,
'status': my_inst.status,
'endpoint': my_inst.endpoint[0],
'port': my_inst.endpoint[1],
'availability_zone': my_inst.availability_zone,
'backup_retention': my_inst.backup_retention_period,
'backup_window': my_inst.preferred_backup_window,
'maintenance_window': my_inst.preferred_maintenance_window,
}
module.exit_json(changed=True, instance=d)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()