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Merge pull request #5287 from ebrevdo/ec2_vol_existing
ec2_vol module: add support for name / id to mount volume on instance
This commit is contained in:
jctanner
commit
7dcc8e2460
1 changed files with 91 additions and 14 deletions
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@ -46,6 +46,18 @@ options:
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required: false
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default: null
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aliases: []
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name:
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description:
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- volume Name tag if you wish to attach an existing volume (requires instance)
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required: false
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default: null
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aliases: []
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id:
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description:
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- volume id if you wish to attach an existing volume (requires instance)
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required: false
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default: null
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aliases: []
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volume_size:
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description:
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- size of volume (in GB) to create.
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@ -145,6 +157,26 @@ EXAMPLES = '''
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volume_size: 5
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with_items: ec2.instances
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register: ec2_vol
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# Idempotent playbook example combined with single instance launch
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# Volume must exist in the same zone; will not do anything if it is
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# already attached.
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- local_action:
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module: ec2
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keypair: "{{ keypair }}"
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image: "{{ image }}"
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zone: YYYYYY
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id: my_instance
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wait: yes
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count: 1
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register: ec2
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- local_action:
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module: ec2_vol
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instance: "{{ item.id }}"
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name: my_existing_volume_Name_tag
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device_name: /dev/xvdf
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with_items: ec2.instances
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register: ec2_vol
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'''
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# Note: this module needs to be made idempotent. Possible solution is to use resource tags with the volumes.
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@ -165,7 +197,9 @@ def main():
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argument_spec = ec2_argument_spec()
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argument_spec.update(dict(
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instance = dict(),
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volume_size = dict(required=True),
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id = dict(),
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name = dict(),
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volume_size = dict(),
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iops = dict(),
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device_name = dict(),
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zone = dict(aliases=['availability_zone', 'aws_zone', 'ec2_zone']),
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@ -174,20 +208,27 @@ def main():
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)
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module = AnsibleModule(argument_spec=argument_spec)
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id = module.params.get('id')
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name = module.params.get('name')
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instance = module.params.get('instance')
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volume_size = module.params.get('volume_size')
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iops = module.params.get('iops')
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device_name = module.params.get('device_name')
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zone = module.params.get('zone')
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snapshot = module.params.get('snapshot')
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ec2 = ec2_connect(module)
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if id and name:
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module.fail_json(msg="Both id and name cannot be specified")
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if not (id or name or volume_size):
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module.fail_json(msg="Cannot specify volume_size and either one of name or id")
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# Here we need to get the zone info for the instance. This covers situation where
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# instance is specified but zone isn't.
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# Useful for playbooks chaining instance launch with volume create + attach and where the
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# zone doesn't matter to the user.
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if instance:
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reservation = ec2.get_all_instances(instance_ids=instance)
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inst = reservation[0].instances[0]
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@ -209,14 +250,51 @@ def main():
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volume_type = 'standard'
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# If no instance supplied, try volume creation based on module parameters.
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if name or id:
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if not instance:
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module.fail_json(msg = "If name or id is specified, instance must also be specified")
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if iops or volume_size:
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module.fail_json(msg = "Parameters are not compatible: [id or name] and [iops or volume_size]")
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try:
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volume = ec2.create_volume(volume_size, zone, snapshot, volume_type, iops)
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while volume.status != 'available':
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time.sleep(3)
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volume.update()
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except boto.exception.BotoServerError, e:
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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filters = {}
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volume_ids = None
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if zone:
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filters['availability_zone'] = zone
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if name:
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filters = {'tag:Name': name}
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if id:
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volume_ids = [id]
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try:
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vols = ec2.get_all_volumes(volume_ids=volume_ids, filters=filters)
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except boto.exception.BotoServerError, e:
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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if not vols:
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module.fail_json(msg = "Could not find volume in zone (if specified): %s" % name or id)
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if len(vols) > 1:
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module.fail_json(msg =
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"Found more than one volume in zone (if specified) with name: %s" % name)
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volume = vols.pop()
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if volume.attachment_state() is not None:
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adata = volume.attach_data
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if adata.instance_id != instance:
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module.fail_json(msg = "Volume %s is already attached to another instance: %s"
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% (name or id, adata.instance_id))
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else:
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module.exit_json(msg="Volume %s is already mapped on instance %s: %s" %
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(name or id, adata.instance_id, adata.device),
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volume_id=id,
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device=adata.device,
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changed=False)
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else:
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try:
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volume = ec2.create_volume(volume_size, zone, snapshot, volume_type, iops)
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while volume.status != 'available':
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time.sleep(3)
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volume.update()
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except boto.exception.BotoServerError, e:
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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# Attach the created volume.
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@ -227,16 +305,15 @@ def main():
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time.sleep(3)
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volume.update()
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except boto.exception.BotoServerError, e:
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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# If device_name isn't set, make a choice based on best practices here:
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# http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html
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# In future this needs to be more dynamic but combining block device mapping best practices
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# (bounds for devices, as above) with instance.block_device_mapping data would be tricky. For me ;)
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# Use password data attribute to tell whether the instance is Windows or Linux
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if device_name is None and instance:
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try:
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if not ec2.get_password_data(inst.id):
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