python - 如何使用 boto3 获取 RDS 实例的主机

Question

我需要获取 RDS 实例的主机。我尝试这样做:

import boto3

region = 'eu-west-1'
db_instance = 'db-instance-identifier'

def lambda_handler(event, context):
    source = boto3.client('rds', region_name=region)
    try:
        instances = source.describe_db_instances(DBInstanceIdentifier=db_instance)
        rds_host = instances[0].endpoint.address
    except Exception as e:
        raise e

也许您可以提出可能存在问题的建议。预先感谢您!

Answer 1

基于the boto3 docs for describe_db_instances ，响应是一本字典。要访问您的特定数据库实例，请按如下方式访问:

instances = source.describe_db_instances(DBInstanceIdentifier=db_instance)
rds_host = instances.get('DBInstances')[0].get('Endpoint').get('Address')
# or
# rds_host = instances.get('DBInstances')[0]['Endpoint']['Address']