ansible/library/ec2_vol
Dag Wieers 50b7964f8e Fix the documentation booleans so they use "yes" and "no"
Both modules seboolean and zfs have not been adapted since they defer from the default (either by having a 'null' or special state, or prefering "on"/"off" for state indication.
2013-03-12 13:25:59 +01:00

176 lines
6.4 KiB
Python

#!/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 ;)
if device_name is None and instance:
try:
if inst.root_device_type != 'ebs':
device_name = '/dev/sdf'
attach = volume.attach(inst.id, device_name)
else:
device_name = '/dev/sdb'
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()