• 方法一：通过阿里云CLI调用API
• 方法二：通过ECS Python SDK调用API
• 方法三：通过ECS控制台使用云助手
• 方法四：通过OOS控制台使用云助手

• 已安装阿里云命令行工具CLI。如何获取和安装阿里云CLI，请参见阿里云命令行工具CLI安装简介。
• 已获取地域ID。详细的地域ID，请参见地域和可用区。

• 使用2.1.2及以上版本的Python SDK。更多详情，请前往GitHub Repo Alibaba Cloud获取最新版本。
• 示例SDK中需要您自行填写AccessKey和地域ID。获取AccessKeyId和地域ID请参见创建AccessKey和地域和可用区。

# coding=utf-8
# If the Python sdk is not installed, run 'sudo pip install aliyun-python-sdk-ecs'.
# Make sure you're using the latest sdk version.
# Run 'sudo pip install --upgrade aliyun-python-sdk-ecs' to upgrade.

import json
import logging
import os
import time
import datetime
import base64
from aliyunsdkcore import client

from aliyunsdkecs.request.v20140526.CreateCommandRequest import CreateCommandRequest
from aliyunsdkecs.request.v20140526.InvokeCommandRequest import InvokeCommandRequest
from aliyunsdkecs.request.v20140526.DescribeInvocationResultsRequest import DescribeInvocationResultsRequest

# 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',filename='aliyun_assist_openapi_test.log', filemode='w')
#access_key = 'Your Access Key Id'
#acess_key_secrect = 'Your Access Key Secrect'
#region_name = 'cn-shanghai'
#zone_id = 'cn-shanghai-b'

access_key = 'LTAIXXXXXXXXXXXX'  # 请根据实际情况填写
acess_key_secrect = '4dZXXXXXXXXXXXXXXXXXXXXXXXX'  # 请根据实际情况填写
region_name = 'cn-hangzhou'  # 请根据实际情况填写
zone_id = 'cn-hangzhou-f'  # 请根据实际情况填写

clt = client.AcsClient(access_key, acess_key_secrect, region_name)

def create_command(command_content, type, name, description):
    request = CreateCommandRequest()
    request.set_CommandContent(command_content)
    request.set_Type(type)
    request.set_Name(name)
    request.set_Description(description)
    response = _send_request(request)
    if response is None:
        return None
    command_id = response.get('CommandId')
    return command_id;

def invoke_command(instance_id, command_id, timed, cronat):
    request = InvokeCommandRequest()
    request.set_Timed(timed)
    InstanceIds = [instance_id]
    request.set_InstanceIds(InstanceIds)
    request.set_CommandId(command_id)
    request.set_Frequency(cronat)
    response = _send_request(request)
    invoke_id = response.get('InvokeId')
    return invoke_id;

def get_task_output_by_id(instance_id, invoke_id):
    logging.info("Check instance %s invoke_id is %s", instance_id, invoke_id)
    request = DescribeInvocationResultsRequest()
    request.set_InstanceId(instance_id)
    request.set_InvokeId(invoke_id)
    response = _send_request(request)
    invoke_detail = None
    output = None
    if response is not None:
        result_list = response.get('Invocation').get('InvocationResults').get('InvocationResult')
        for item in result_list:
            invoke_detail = item
            output = base64.b64decode(item.get('Output'))
            break;
        return output;

def execute_command(instance_id):
    command_str = 'yum check-update'
    command_id = create_command(base64.b64encode(command_str), 'RunShellScript', 'test', 'test')
    if(command_id is None):
        logging.info('create command failed')
        return

    invoke_id = invoke_command(instance_id, command_id, 'false', '')
    if(invoke_id is None):
        logging.info('invoke command failed')
        return

    time.sleep(15)

    output = get_task_output_by_id(instance_id, invoke_id)
    if(output is None):
        logging.info('get result failed')
        return

    logging.info("output: %s is \n", output)

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

if __name__ == '__main__':
    execute_command('i-bp17zhpbXXXXXXXXXXXXX')