[英]unable to connect to AWS RDS instance in default VPC from AWS Lambda
I have a RDS mysql instance running 我有一个RDS mysql实例正在运行
its assigned in default VPC to all default subnets 将其在默认VPC中分配给所有默认子网
has a security group, inbound rule set to listen all Traffic, all protocol, all port ranges and source 0.0.0.0/0 有一个安全组,入站规则设置为侦听所有流量,所有协议,所有端口范围和源0.0.0.0/0
Publicly accessible is set to True 公开访问设置为True
I am able to connect to RDS from SQl Workbench and also from local python script 我能够从SQl Workbench以及本地python脚本连接到RDS
-In my python lambda function - -在我的python lambda函数中 -
have assigned role with AWSLambdaVPCAccessExecutionRole ,lambda_basic_execution 已为AWSLambdaVPCAccessExecutionRole分配角色,lambda_basic_execution
2.Lambda is not assigned to any VPC 2.Lambda未分配给任何VPC
I get following error message from lambda "errorMessage": "RequestId: xx Process exited before completing request" 我从lambda “ errorMessage”收到以下错误消息:“ RequestId:xx进程在完成请求之前已退出”
Code fails at a point where it tries to connect to DB get_database_connection() and in except block logging message logger.error("ERROR: Unexpected error: Could not connect to MySql instance.") 代码在尝试连接到DB get_database_connection()时以及在块日志消息logger.error之外的点均失败(“错误:意外错误:无法连接到MySql实例。”)
Is it even possible for lambda to connect to RDS instance in default VPC ? lambda是否有可能在默认VPC中连接到RDS实例? lambda is not assigned to any VPC
lambda未分配给任何VPC
Lambda Code Lambda代码
import sys
import logging
import package.pymysql
import logging
import package.pymysql.cursors
DATABASE_HOST = 'XXX'
DATABASE_USER = 'XXX'
DATABASE_PASSWORD = 'XXX'
DATABASE_DB_NAME = 'XXX'
port = 3306
def get_database_connection():
"Build a database connection"
conn = pymysql.connect(DATABASE_HOST, user=DATABASE_USER,
passwd=DATABASE_PASSWORD, db=DATABASE_DB_NAME, connect_timeout=5)
return conn
try:
conn = get_database_connection()
except:
logger.error("ERROR: Unexpected error: Could not connect to MySql instance.")
sys.exit()
logger.info("SUCCESS: Connection to RDS mysql instance succeeded")
def lambda_handler(event, context):
print("Lambda executed")
followed this link [ https://docs.aws.amazon.com/lambda/latest/dg/vpc-rds-deployment-pkg.html][1] 按照此链接[ https://docs.aws.amazon.com/lambda/latest/dg/vpc-rds-deployment-pkg.html][1]
What you need to do is this: 您需要做的是:
Create 2 private subnets for the default VPC 为默认VPC创建2个专用子网
xxx.xxx.64.0/20
xxx.xxx.128.0/20
Go to your Lambda function in the console. 在控制台中转到Lambda函数。
Scroll down and on the left hand side select the default VPC. 向下滚动并在左侧选择默认的VPC。
Select the 2 Private Subnets as your subnets on your lambda function.
yes, your lambda is not in a vpc so the instance cant contact the rds public instance, follow this documentation for provide to your lambda function the internet "functionality" 是的,您的lambda不在vpc中,因此该实例无法联系rds公共实例,请按照此文档为您的lambda函数提供互联网“功能”
https://aws.amazon.com/it/premiumsupport/knowledge-center/internet-access-lambda-function/ https://aws.amazon.com/it/premiumsupport/knowledge-center/internet-access-lambda-function/
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