Extend ec2 module to support spot instances
This commit is contained in:
Joseph Tate
parent
301a1189dd
commit
40f9da351f
1 changed files with 82 additions and 25 deletions
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@ -67,6 +67,12 @@ options:
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required: true
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default: null
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aliases: []
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spot_price:
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description:
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- Maximum spot price to bid, If not set a regular on-demand instance is requested. A spot request is made with this maximum bid. When it is filled, the instance is started.
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required: false
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default: null
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aliases: []
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image:
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description:
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- I(emi) (or I(ami)) to use for the instance
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@ -97,6 +103,11 @@ options:
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- how long before wait gives up, in seconds
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default: 300
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aliases: []
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spot_wait_timeout:
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description:
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- how long to wait for the spot instance request to be fulfilled
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default: 600
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aliases: []
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ec2_url:
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description:
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- Url to use to connect to EC2 or your Eucalyptus cloud (by default the module will use EC2 endpoints). Must be specified if region is not used. If not set then the value of the EC2_URL environment variable, if any, is used
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@ -247,6 +258,19 @@ local_action:
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vpc_subnet_id: subnet-29e63245
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assign_public_ip: yes
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# Spot instance example
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- local_action:
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module: ec2
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spot_price: 0.24
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spot_wait_timeout: 600
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keypair: mykey
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group_id: sg-1dc53f72
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instance_type: m1.small
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image: ami-6e649707
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wait: yes
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vpc_subnet_id: subnet-29e63245
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assign_public_ip: yes
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# Launch instances, runs some tasks
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# and then terminate them
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@ -392,6 +416,7 @@ def create_instances(module, ec2):
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group_id = module.params.get('group_id')
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zone = module.params.get('zone')
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instance_type = module.params.get('instance_type')
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spot_price = module.params.get('spot_price')
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image = module.params.get('image')
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count = module.params.get('count')
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monitoring = module.params.get('monitoring')
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@ -399,6 +424,7 @@ def create_instances(module, ec2):
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ramdisk = module.params.get('ramdisk')
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wait = module.params.get('wait')
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wait_timeout = int(module.params.get('wait_timeout'))
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spot_wait_timeout = int(module.params.get('spot_wait_timeout'))
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placement_group = module.params.get('placement_group')
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user_data = module.params.get('user_data')
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instance_tags = module.params.get('instance_tags')
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@ -456,16 +482,12 @@ def create_instances(module, ec2):
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try:
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params = {'image_id': image,
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'key_name': key_name,
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'client_token': id,
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'min_count': count_remaining,
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'max_count': count_remaining,
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'monitoring_enabled': monitoring,
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'placement': zone,
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'placement_group': placement_group,
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'instance_type': instance_type,
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'kernel_id': kernel,
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'ramdisk_id': ramdisk,
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'private_ip_address': private_ip,
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'user_data': user_data}
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if boto_supports_profile_name_arg(ec2):
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@ -498,22 +520,55 @@ def create_instances(module, ec2):
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else:
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params['security_groups'] = group_name
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res = ec2.run_instances(**params)
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if not spot_price:
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params.update({
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'min_count': count_remaining,
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'max_count': count_remaining,
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'client_token': id,
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'private_ip_address': private_ip,
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})
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res = ec2.run_instances(**params)
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instids = [ i.id for i in res.instances ]
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while True:
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try:
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ec2.get_all_instances(instids)
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break
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except boto.exception.EC2ResponseError as e:
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if "<Code>InvalidInstanceID.NotFound</Code>" in str(e):
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# there's a race between start and get an instance
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continue
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else:
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module.fail_json(msg = str(e))
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else:
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if private_ip:
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module.fail_json(
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msg='private_ip only available with on-demand (non-spot) instances')
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params.update({
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'count': count_remaining,
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})
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res = ec2.request_spot_instances(spot_price, **params)
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#Now we have to do the intermediate waiting
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if wait:
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spot_req_inst_ids = dict()
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spot_wait_timeout = time.time() + spot_wait_timeout
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while spot_wait_timeout > time.time():
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reqs = ec2.get_all_spot_instance_requests()
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for sirb in res:
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if sirb.id in spot_req_inst_ids:
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continue
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for sir in reqs:
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if sir.id == sirb.id and sir.instance_id is not None:
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spot_req_inst_ids[sirb.id] = sir.instance_id
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if len(spot_req_inst_ids) < count:
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time.sleep(5)
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else:
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break
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if spot_wait_timeout <= time.time():
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module.fail_json(msg = "wait for spot requests timeout on %s" % time.asctime())
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instids = spot_req_inst_ids.values()
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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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instids = [ i.id for i in res.instances ]
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while True:
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try:
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res.connection.get_all_instances(instids)
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break
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except boto.exception.EC2ResponseError as e:
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if "<Code>InvalidInstanceID.NotFound</Code>" in str(e):
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# there's a race between start and get an instance
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continue
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else:
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module.fail_json(msg = str(e))
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if instance_tags:
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try:
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ec2.create_tags(instids, instance_tags)
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@ -521,15 +576,14 @@ def create_instances(module, ec2):
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module.fail_json(msg = "%s: %s" % (e.error_code, e.error_message))
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# wait here until the instances are up
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this_res = []
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num_running = 0
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wait_timeout = time.time() + wait_timeout
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while wait_timeout > time.time() and num_running < len(instids):
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res_list = res.connection.get_all_instances(instids)
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if len(res_list) > 0:
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this_res = res_list[0]
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num_running = len([ i for i in this_res.instances if i.state=='running' ])
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else:
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res_list = ec2.get_all_instances(instids)
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num_running = 0
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for res in res_list:
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num_running += len([ i for i in res.instances if i.state=='running' ])
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if len(res_list) <= 0:
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# got a bad response of some sort, possibly due to
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# stale/cached data. Wait a second and then try again
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time.sleep(1)
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@ -543,8 +597,9 @@ def create_instances(module, ec2):
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# waiting took too long
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module.fail_json(msg = "wait for instances running timeout on %s" % time.asctime())
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for inst in this_res.instances:
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running_instances.append(inst)
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#We do this after the loop ends so that we end up with one list
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for res in res_list:
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running_instances.extend(res.instances)
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instance_dict_array = []
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created_instance_ids = []
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@ -631,6 +686,7 @@ def main():
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region = dict(aliases=['aws_region', 'ec2_region'], choices=AWS_REGIONS),
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zone = dict(aliases=['aws_zone', 'ec2_zone']),
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instance_type = dict(aliases=['type']),
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spot_price = dict(),
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image = dict(),
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kernel = dict(),
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count = dict(default='1'),
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@ -638,6 +694,7 @@ def main():
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ramdisk = dict(),
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wait = dict(type='bool', default=False),
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wait_timeout = dict(default=300),
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spot_wait_timeout = dict(default=600),
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ec2_url = dict(),
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ec2_secret_key = dict(aliases=['aws_secret_key', 'secret_key'], no_log=True),
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ec2_access_key = dict(aliases=['aws_access_key', 'access_key']),
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