我在RDS MySQL数据库中使用Node.js LTS已经有一段时间了。我最近开发了一个RDS无服务器Aurora MySQL5.6集群。与我的其他RDS数据库不同，我无法让Node.js使用Node mysql或mysql2适配器连接到带有SSL的新无服务器集群。

从一个Ubuntu实例和一个node.js应用程序：

我可以使用SSL成功地将Node应用程序连接到任何较旧的RDS数据库(MySQL 5.6.40):

// works with other RDS databases:
const fs = require('fs');
const mysql = require('mysql2');
const config = require('../config');

var connectionArgs = {
  host: config.old_rds_host,
  database: config.old_rds_database,
  user: config.old_rds_user,
  password: config.old_rds_password,
  port: config.rds.port,
  ssl: {
    ca: fs.readFileSync(__dirname + '/../rds-combined-ca-bundle.pem')
  }
}

var connection = mysql.createConnection(connectionArgs);

从同一台机器上,我可以使用MySQL客户端用SSL连接到新的RDS集群,而不会出现问题：

// Works with new RDS serverless cluster:
mysql -u rds_serverless_user -p -h new-rds-serverless-cluster.us-west-2.rds.amazonaws.com -P 3306 --ssl --ssl-ca=./rds-combined-ca-bundle.pem

我可以在没有SSL的情况下成功地将Node app连接到新的无服务器集群：

// Works with new RDS serverless cluster:
const fs = require('fs');
const mysql = require('mysql2');
const config = require('../config');

var connectionArgs = {
  host: config.rds_host,
  database: config.rds_serverless_database,
  user: config.rds_serverless_user,
  password: config.rds_serverless_password,
  port: config.rds.port
}

var connection = mysql.createConnection(connectionArgs);

但当我尝试用SSL证书连接到新的无服务器集群时,我得到一个服务器不支持安全连接的错误：

// Fails with new RDS serverless cluster:
const fs = require('fs');
const mysql = require('mysql2');
const config = require('../config');

var connectionArgs = {
  host: config.rds_host,
  database: config.rds_serverless_database,
  user: config.rds_serverless_user,
  password: config.rds_serverless_password,
  port: config.rds.port,
  ssl: {
    ca: fs.readFileSync(__dirname + '/../rds-combined-ca-bundle.pem')
  }
}


var connection = mysql.createConnection(connectionArgs);

Debug: internal, implementation, error 
Error: Server does not support secure connnection
at ClientHandshake.handshakeInit (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/commands/client_handshake.js:120:17)
at ClientHandshake.Command.execute (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/commands/command.js:40:20)
at Connection.handlePacket (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/connection.js:513:28)
at PacketParser.onPacket (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/connection.js:81:16)
at PacketParser.executeStart (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/packet_parser.js:76:14)
at Socket.<anonymous> (/home/deploy_user/my-node-rds-app/node_modules/mysql2/lib/connection.js:89:29)
at emitOne (events.js:116:13)
at Socket.emit (events.js:211:7)
at addChunk (_stream_readable.js:263:12)
at readableAddChunk (_stream_readable.js:250:11)
at Socket.Readable.push (_stream_readable.js:208:10)
at TCP.onread (net.js:601:20)

那么有什么不同呢？旧的RDS数据库和新的无服务器集群之间唯一明显的区别是旧的实例是MySQL 5.6.40，而新的RDS集群是Aurora MySQL 5.6.10a。此外，旧的RDS实例主机名解析为单个专用IP，而新的集群主机名解析为多个专用IP。

我使用mysql适配器得到相同的结果。我还尝试了mysql适配器中的“Amazon RDS”SSL配置文件，得到了相同的结果。

我无法使用IAM数据库身份验证，因为此服务每秒需要处理20个以上的新连接。

如有任何建议，将不胜感激。