:ECSインスタンスの照会

次のコマンドを実行して、SDK for Pythonをインストールします。

pip install aliyun-python-sdk-ecs

権限がないことを確認された場合は、次のsudoコマンドを実行してインストールを続行します。

sudo pip install aliyun-python-sdk-ecs

次のコードは、ECSインスタンスのクエリ方法の例を示しています。 実際のニーズに基づいてコードを変更できます。

#  coding=utf-8
# if the python sdk is not install using 'sudo pip install aliyun-python-sdk-ecs'
# if the python sdk is install using 'sudo pip install --upgrade aliyun-python-sdk-ecs'
# make sure the sdk version is greater than 2.1.2, you can use command 'pip show aliyun-python-sdk-ecs' to check
import json
import logging
import os
from aliyunsdkcore import client
from aliyunsdkecs.request.v20140526.DescribeInstancesRequest import DescribeInstancesRequest
from aliyunsdkecs.request.v20140526.DescribeRegionsRequest import DescribeRegionsRequest
# configuration the log output formatter, if you want to save the output to file,
# append ",filename='ecs_invoke.log'" after datefmt.

logging.basicConfig(level=logging.INFO, format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s', datefmt='%a %d %b %Y %H:%M:%S')

# Make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured in the code runtime. 
# If the project code is leaked, the AccessKey pair may be leaked and the security of resources within your account may be compromised. The following sample code shows how to use environment variables to obtain an AccessKey pair and use the AccessKey pair to call API operations. The sample code is for reference only. We recommend that you use Security Token Service (STS) tokens, which provide higher security.
# Replace <RegionId> with the actual region ID. You can call the DescribeRegions operation to query the most recent region list. 
clt = client.AcsClient(os.environ['ALIBABA_CLOUD_ACCESS_KEY_ID'], os.environ['ALIBABA_CLOUD_ACCESS_KEY_SECRET'], '<RegionId>')

# sample api to list aliyun open api.
def hello_aliyun_regions():
    request = DescribeRegionsRequest()
    response = _send_request(request)
    if response is not None:
        region_list = response.get('Regions').get('Region')
        assert response is not None
        assert region_list is not None
        result = map(_print_region_id, region_list)
        logging.info("region list: %s", list(result))

# output the instance owned in current region.
def list_instances():
    request = DescribeInstancesRequest()
    request.set_accept_format('json')
    # The following code provides an example on how to configure request parameters to perform a paged query. In this example, set_PageNumber is set to 1 and set_PageSize is set to 2. 
    request.set_PageNumber(1)
    request.set_PageSize(2)
    response = _send_request(request)
    if response is not None:
        instance_list = response.get('Instances').get('Instance')
        result = map(_print_instance_id, instance_list)
        logging.info("current region include instance %s", list(result))

def _print_instance_id(item):
    instance_id = item.get('InstanceId')
    return instance_id

def _print_region_id(item):
    region_id = item.get("RegionId")
    return region_id

# send open api request
def _send_request(request):
    request.set_accept_format('json')
    try:
        response_str = clt.do_action_with_exception(request)
        logging.info(response_str)
        response_detail = json.loads(response_str)
        return response_detail
    except Exception as e:
        logging.error(e)

if __name__ == '__main__':
    logging.info("Hello Aliyun OpenApi!")
    hello_aliyun_regions()
    list_instances()

AcsClientオブジェクトがインスタンス化されたら、現在のアカウントでサポートされているリージョンのリストを照会します。 詳細については、「DescribeRegions」をご参照ください。

def hello_aliyun_regions():
    request = DescribeRegionsRequest()
    response = _send_request(request)
    region_list = response.get('Regions').get('Region')
    assert response is not None
    assert region_list is not None
    result = map(_print_region_id, region_list)
    logging.info("region list: %s", list(result))
def _print_region_id(item):
    region_id = item.get("RegionId")
    return region_id
def _send_request(request):
    request.set_accept_format('json')
    try:
        response_str = clt.do_action_with_exception(request)
        logging.info(response_str)
        response_detail = json.loads(response_str)
        return response_detail
    except Exception as e:
        logging.error(e)
hello_aliyun_regions()

コマンドラインでpython hello_ecs_api.pyコマンドを実行して、現在のアカウントでサポートされているリージョンのリストを取得します。 レスポンス例：

region list: ['cn-qingdao', 'cn-beijing', 'cn-zhangjiakou', 'cn-huhehaote', 'cn-wulanchabu', 'cn-hangzhou', 'cn-shanghai', 'cn-shenzhen', 'cn-heyuan', 'cn-guangzhou', 'cn-chengdu', 'cn-hongkong', 'ap-northeast-1', 'ap-southeast-1', 'ap-southeast-3', 'ap-southeast-5', 'us-east-1', 'us-west-1', 'eu-west-1']

レスポンス例：

current region include instance ['i-bp165p6xk2tmdhj0****', 'i-bp1a01zbqmsun5odo****'']