使用EC2PythonAPI boto，如何从SpotInstanceRequest获取spot实例的标识？

Question

当使用boto时，Amazon aws python API。在

ec2_connection.request_spot_instances(...)
# This will return an ResultSet of SpotInstanceRequest

如何从SpotInstanceRequest获取实例标识？在

更新：我是这样做的，在玩了很多游戏和谷歌搜索之后，希望这有助于：

^{pr2}$

这将返回更新的SpotInstanceRequest，当实例就绪时，我们可以从中获得*instance_id*。在

Answer 1

我做了类似的事情：定期检查spot实例请求id是否由 ec2_connection.request_spot_instances(...) 与的结果中的实例匹配 conn.get_all_spot_instance_requests(...) 公司名称：

conn = boto.ec2.connect_to_region(region_name=region_name, aws_access_key_id=aws_access_key_id, aws_secret_access_key=aws_secret_access_key)
req = conn.request_spot_instances(price=MAX_SPOT_BID,instance_type=instance_type,image_id=AMI_ID,availability_zone_group=region_name,key_name=KEY_PAIR_PEM[:-4],security_groups=security_groups)
job_instance_id = None
while job_instance_id == None:
    print "checking job instance id for this spot request"
    job_sir_id = req[0].id # spot instance request = sir, job_ is the relevant aws item for this job
    reqs = conn.get_all_spot_instance_requests()
    for sir in reqs:
        if sir.id == job_sir_id:
            job_instance_id = sir.instance_id
            print "job instance id: " + str(job_instance_id)
            break
    time.sleep(SPINUP_WAIT_TIME)

Answer 2

spot_instance_requests = aws.ec2_get_connection().request_spot_instances(...)
MAX_MINUTES = 180
spot_instance_request_ids = [sir.id for sir in spot_instance_requests]
for _ in range(MAX_MINUTES):
    log.info('waiting for spot instances to start', request_ids=spot_instance_request_ids, seconds=60)
    time.sleep(60)
    spot_instance_requests = aws.ec2_get_connection().get_all_spot_instance_requests(
        request_ids=spot_instance_request_ids)
    if any(sir.instance_id for sir in spot_instance_requests):
        log.info('spot instance started. waiting...', seconds=60*5)
        time.sleep(60*5)
        break
else:
    raise Exception("Spot instances didn't start in {0} minutes!".format(MAX_MINUTES))