aws rds代理抛出来自nodejs12.x的超时错误

Question

当我尝试连接到mysql rds代理时出现连接超时。我关注了此tutorial

这是我的代码

import mysql2 from 'mysql2';
import AWS from 'aws-sdk';
const getConnection = async () => {
    const signer = new AWS.RDS.Signer({
        username: 'my-user-name',
        hostname: 'proxy-name.proxy-someid.us-east-1.rds.amazonaws.com',
        port: 3306
    });

    console.info('Connecting to MySQL proxy via IAM authentication');

    const rdsSignerAuth = () => () => {
        console.info('CALL rdsSignerAuth');
        return signer.getAuthToken({
            username: 'my-user-name',
            region: 'us-east-1',
            hostname: 'proxy-name.proxy-someid.us-east-1.rds.amazonaws.com',
            port: 3306
        });
    };

    let connection;
    try {
        connection = await mysql2.createConnection({
            host: 'proxy-name.proxy-someid.us-east-1.rds.amazonaws.com',
            user: 'my-user-name',
            database: 'database-name',
            connectTimeout: 60000,
            ssl: { rejectUnauthorized: false },
            authPlugins: { mysql_clear_password: rdsSignerAuth },
        });
        console.info('Connected');
    }
    catch (e) {
        console.error(`MySQL connection error: ${e}`);
        throw e;
    }
    return connection;
};
const mysql2Impl = async () => {
    const connection = await getConnection();
    //console.info({ type: 'connection', connection });
    const result = await connection.promise().query('select * from destiny;');
    console.info({ type: 'result', result });
};
export async function testRdsProxy(event, context){
    console.info(JSON.stringify({ event, context }));
    await mysql2Impl();
    return 200;
}

这是回应

Error {
    code: 'ETIMEDOUT',
    errno: undefined,
    message: 'connect ETIMEDOUT',
    sqlState: undefined,
  }

我已经检查过我的lambda函数是否具有对“ *”资源的策略“ rds-db：connect”。此外，我检查了我的代理服务器是否与rds数据库位于同一VPC和子网中。拥有RDS凭据的秘密是可以的。我做错了吗？

Answer 1

该文档指出RDS代理无法公开访问，因此您的lambda函数必须与rds代理位于同一安全组中。请注意，当您将Lambda设为vpc时，您的Lambda可能会失去其访问互联网的能力。谢谢。