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#!/usr/bin/python -tt
# 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: ec2_vol
short_description: create and attach a volume, return volume id and device map
description:
- creates an EBS volume and optionally attaches it to an instance. This module has a dependency on python-boto
version_added: "1.1"
options:
instance:
description:
- instance ID if you wish to attach the volume.
required: false
default: null
aliases: []
volume_size:
description:
- size of volume (in GB) to create.
required: true
default: null
aliases: []
device_name:
description:
- device id to override device mapping. Assumes /dev/sdf for instance-store, /dev/sdb for EBS.
required: false
default: null
aliases: []
zone:
description:
- zone in which to create the volume, if unset uses the zone the instance is in (if set)
required: false
default: null
aliases: []
examples:
- code: 'local_action: ec2_vol instance=XXXXXX volume_size=5 device_name=sdd'
description: "Simple playbook example"
- code: |
- name: Launch instances
local_action: ec2 keypair=$keypair image=$image wait=yes count=3
register: ec2
- name: Create volumes and attach
local_action: ec2_vol instance=${item.id} volume_size=5
with_items: ${ec2.instances}
register: ec2_vol
description: "Advanced - attaching multiple volumes to multiple instances"
requirements: [ "boto" ]
author: Lester Wade
'''
# Note: this module needs to be made idempotent. Possible solution is to use resource tags with the volumes.
# if state=present and it doesn't exist, create, tag and attach.
# Check for state by looking for volume attachment with tag (and against block device mapping?).
# Would personally like to revisit this in May when Eucalyptus also has tagging support (3.3).
import sys
import time
try:
import boto
except ImportError:
print "failed=True msg='boto required for this module'"
sys.exit(1)
def main():
module = AnsibleModule(
argument_spec = dict(
instance = dict(),
volume_size = dict(required=True),
device_name = dict(),
zone = dict(),
ec2_url = dict(aliases=['EC2_URL']),
ec2_secret_key = dict(aliases=['EC2_SECRET_KEY']),
ec2_access_key = dict(aliases=['EC2_ACCESS_KEY']),
)
)
instance = module.params.get('instance')
volume_size = module.params.get('volume_size')
device_name = module.params.get('device_name')
zone = module.params.get('zone')
ec2_url = module.params.get('ec2_url')
ec2_secret_key = module.params.get('ec2_secret_key')
ec2_access_key = module.params.get('ec2_access_key')
# allow eucarc environment variables to be used if ansible vars aren't set
if not ec2_url and 'EC2_URL' in os.environ:
ec2_url = os.environ['EC2_URL']
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']
try:
if ec2_url: # if we have an URL set, connect to the specified endpoint
ec2 = boto.connect_ec2_endpoint(ec2_url, ec2_access_key, ec2_secret_key)
else: # otherwise it's Amazon.
ec2 = boto.connect_ec2(ec2_access_key, ec2_secret_key)
except boto.exception.NoAuthHandlerFound, e:
module.fail_json(msg = str(e))
# Here we need to get the zone info for the instance. This covers situation where
# instance is specified but zone isn't.
# Useful for playbooks chaining instance launch with volume create + attach and where the
# zone doesn't matter to the user.
if instance:
reservation = ec2.get_all_instances(instance_ids=instance)
inst = reservation[0].instances[0]
zone = inst.placement
# If no instance supplied, try volume creation based on module parameters.
try:
volume = ec2.create_volume(volume_size, zone)
while volume.status != 'available':
time.sleep(3)
volume.update()
except boto.exception.BotoServerError, e:
module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
# Attach the created volume.
if device_name and instance:
try:
attach = volume.attach(inst.id, device_name)
while volume.attachment_state() != 'attached':
time.sleep(3)
volume.update()
except boto.exception.BotoServerError, e:
module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
# If device_name isn't set, make a choice based on best practices here:
# http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html
# In future this needs to be more dynamic but combining block device mapping best practices
# (bounds for devices, as above) with instance.block_device_mapping data would be tricky. For me ;)
# Use password data attribute to tell whether the instance is Windows or Linux
if device_name is None and instance:
try:
if inst.get_password_data == '':
device_name = '/dev/sdf'
attach = volume.attach(inst.id, device_name)
while volume.attachment_state() != 'attached':
time.sleep(3)
volume.update()
else:
device_name = '/dev/xvdf'
attach = volume.attach(inst.id, device_name)
while volume.attachment_state() != 'attached':
time.sleep(3)
volume.update()
except boto.exception.BotoServerError, e:
module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
print json.dumps({
"volume_id": volume.id,
"device": device_name
})
sys.exit(0)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
|
