使用Python3?Boto3包刪除AWS?CloudFormation的棧(Stacks)

更新時間：2024年01月08日 09:38:18 作者：scruffybear

這篇文章主要介紹了如何使用Python3?Boto3刪除AWS?CloudFormation的棧（Stacks）,本文給大家介紹的非常詳細，對大家的學習或工作具有一定的參考借鑒價值，需要的朋友可以參考下

小結

本文記錄了使用Python3的Boto3包刪除AWS CloudFormation的棧（Stacks）

問題及解決

有關Json文件的輸入和輸出

json.loads函數是將一個字符串(String)輸入轉換為字典類型(dictionary)輸出
json.dumps函數是將一個字典類型(dictionary)輸入轉換為字符串(String)輸出

當出現JSON object must be str, bytes or bytearray, not dict或者'dict' object has no attribute 'read'的錯誤時，需要檢查以上輸入類型是否正確。

對于datetime.datetime not JSON serializable的問題，也就是日期類型無法進行Json序列化，可以使用以下指令解決問題，應該是default=str這個參數起了作用，將日期類型處理為了字符串：

json_formatted_str = json.dumps(task_definition, indent=2, sort_keys=True, default=str)

使用Python3及正則表達式查找字符串包含某個子字符串

使用以下辦法：

exp = re.compile(stack_name_to_Search)
stack_name = cfn_stack['StackName']
if re.search(exp, stack_name):
  ....

以上是查找 stack_name 這個字符串是否包含stack_name_to_Search這個子字符串。

使用Python3 Boto3刪除AWS CloudFormation的棧（Stacks）

def delete_skms_stack(stack_name):
    cf_client = boto3.client('cloudformation')
    #list all the stacks excepts 'DELETED_STACKS'
    response = cf_client.list_stacks(
        StackStatusFilter=[
        'CREATE_IN_PROGRESS','CREATE_FAILED','CREATE_COMPLETE',
        'ROLLBACK_IN_PROGRESS','ROLLBACK_FAILED','ROLLBACK_COMPLETE',
        'DELETE_IN_PROGRESS','DELETE_FAILED',
        'UPDATE_IN_PROGRESS','UPDATE_COMPLETE_CLEANUP_IN_PROGRESS','UPDATE_COMPLETE','UPDATE_FAILED','UPDATE_ROLLBACK_IN_PROGRESS','UPDATE_ROLLBACK_FAILED','UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS','UPDATE_ROLLBACK_COMPLETE','REVIEW_IN_PROGRESS',
        'IMPORT_IN_PROGRESS','IMPORT_COMPLETE','IMPORT_ROLLBACK_IN_PROGRESS','IMPORT_ROLLBACK_FAILED','IMPORT_ROLLBACK_COMPLETE'
        ]
    )
    #Stack name pattern
    exp = re.compile(stack_name)
    print('--------------------')
    print(response['StackSummaries'])
    for cfn_stack in response['StackSummaries']:
        stack_name = cfn_stack['StackName']
        #match = re.search(regex_pattern,stack_name)
        if re.search(exp, stack_name):
        #Custome conditions can be implemented here
            try:
                response = cf_client.delete_stack(StackName=stack_name)
                stack_delete_status = cf_client.describe_stacks(StackName=stack_name)
                logger.info("Delete stack: " + json.dumps(response))
                while stack_delete_status['Stacks'][0]['StackStatus'] == 'DELETE_IN_PROGRESS':
                    time.sleep(10)
                    stack_delete_status = cf_client.describe_stacks(StackName=stack_name)
                    logger.info("Delete stack status: " + stack_delete_status['Stacks'][0]['StackStatus'])
                    if stack_delete_status['Stacks'][0]['StackStatus'] == 'DELETE_FAILED':
                        logger.warning('Delete failed. Retry delete')
                        resources = cf_client.delete_stack(StackName=stack_name)
                        return resources
                    elif stack_delete_status['Stacks'][0]['StackStatus'] == 'DELETE_IN_PROGRESS':
                        continue
                    else:
                        logger.info("Delete stack complete")
            except Exception as e:
                logger.error(e)

以上代碼執(zhí)行效果如下：

INFO:__main__:Delete stack status: DELETE_IN_PROGRESS
INFO:__main__:Delete stack status: DELETE_IN_PROGRESS
INFO:__main__:Delete stack status: DELETE_IN_PROGRESS
INFO:__main__:Delete stack status: DELETE_IN_PROGRESS
ERROR:__main__:An error occurred (ValidationError) when calling the DescribeStacks operation: Stack with id ECS-Console-V2-Service-sammperso-johnvpc-svc-John-VPC-Cluster-8c3e39c8 does not exist

其中最后一個錯誤是因為CloudFormation的棧（Stacks）已經被刪除，找不到了，所以是正常返回。