lambda删除elasticsearch上早于x天的索引

Question

lambda在弹性搜索中删除早于x天的索引

我用了这个脚本

import boto3
from requests_aws4auth import AWS4Auth    
from elasticsearch import Elasticsearch, RequestsHttpConnection    
import curator     
host = 'XXXXXXXXXXXXXXXX.us-east-1.es.amazonaws.com' 
region = 'us-east-1'    
service = 'es'    
credentials = boto3.Session().get_credentials()    
awsauth = AWS4Auth(credentials.access_key, credentials.secret_key, region, service, session_token=credentials.token)

def lambda_handler(event, context):        
es = Elasticsearch(    
hosts = [{'host': host, 'port': 443}],    
http_auth = awsauth,    
use_ssl = True,   
verify_certs = True,    
connection_class = RequestsHttpConnection    
)    
 
index_list = curator.IndexList(es)
index_list.filter_by_age(source='creation_date', direction='older', timestring='%Y-%m-%d', unit='days', unit_count=7)    
 
print("Found %s indices to delete" % len(index_list.indices))    
 
if index_list.indices:    
curator.DeleteIndices(index_list).do_action()    
 
print('Indices deleted successfully')

运行此脚本时，会显示属性错误

如何解决这个问题

Traceback (most recent call last):   
  File "curator_03.py", line 10, in <module>    
    awsauth = AWS4Auth(credentials.access_key, credentials.secret_key, region, service, session_token=credentials.token)    
AttributeError: 'NoneType' object has no attribute 'access_key'