如何将 GCP 项目中的 MySQL 实例连接到 AWS Lambda function？

Question

I've hosted my MySQL instance in GCP project and I want to use it's database in AWS Lambda Function. I've tried all the ways to connect to my DB in MySQL instance in GCP but the Lambda Function give me Timeout Error even though I've kept my Timeout period enough to run the function. I've also Zipped the Package with MySQL and pymysql installed and then uploaded to Lambda but the issues still persists.

Here's the code that I've written for connecting to my DB:

import json
import boto3
import mysql.connector
import MySQLdb

def lambda_handler(event, context):
    mydb = MySQLdb.connect(
    host="Public Ip of MySQL Instance",
    user="Username",
    password="Password",
    db="DbName"
    )
    cur = db.cursor()
    cur.execute("SELECT * FROM budget")
    for row in cur.fetchall():
        print(row[0])
    
    db.close()

Here's the Error that I receive:

{
  "errorMessage": "(2003, \"Can't connect to MySQL server on '36.71.43.131' (timed out)\")",
  "errorType": "OperationalError",
  "stackTrace": [
    "  File \"/var/lang/lib/python3.8/imp.py\", line 234, in load_module\n    return load_source(name, filename, file)\n",
    "  File \"/var/lang/lib/python3.8/imp.py\", line 171, in load_source\n    module = _load(spec)\n",
    "  File \"<frozen importlib._bootstrap>\", line 702, in _load\n",
    "  File \"<frozen importlib._bootstrap>\", line 671, in _load_unlocked\n",
    "  File \"<frozen importlib._bootstrap_external>\", line 783, in exec_module\n",
    "  File \"<frozen importlib._bootstrap>\", line 219, in _call_with_frames_removed\n",
    "  File \"/var/task/lambda_function.py\", line 10, in <module>\n    connection = pymysql.connect(host='36.71.43.131',\n",
    "  File \"/var/task/pymysql/connections.py\", line 353, in __init__\n    self.connect()\n",
    "  File \"/var/task/pymysql/connections.py\", line 664, in connect\n    raise exc\n"
  ]
}

Please help me to resolve this. I've tried all different ways to connect to my SQL instance but nothing works.

Answer 1

According to the error message, AWS Lambdathe tried to connect the Public IP address of MySQL instance directly.

You have to configure your MySQL instance to have a public IPv4 address, and to accept connections from specific IP addresses or a range of addresses by adding authorized addresses to your instance .

To configure access to your MySQL instance:

1. From the client machine, use What's my IP to see the IP address of the client machine.
2. Copy that IP address.
3. Go to the Cloud SQL Instances page in the Google Cloud Console.
4. Click the instance to open its Overview page, and record its IP address.
5. Select the Connections tab.
6. Under Authorized networks, click Add network and enter the IP address of the machine where the client is installed. Note: The IP addresses must be IPv4. That is, the IP addresses of the instance, and of the client machine that you authorize, both must be IPv4.
7. Click Done. Then click Save at the bottom of the page to save your changes.