authentication - 卡夫卡SASL : OAUTHBEARER and PLAIN simultaniously

Question

我想做的是-

For Clients to Broker communication - use OAUTHBEARER authentication
For Broker to Broker communication - use PLAIN authentication

我有以下 JAAS 配置:

{
  KafkaServer {
    org.apache.kafka.common.security.plain.PlainLoginModule required
    username="inter"
    password="inter-secret"
    user_inter="inter-secret"
    user_admin="YvNzcbmqhA0DfxjP";

    org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule required;
  };

  Client {
    org.apache.zookeeper.server.auth.DigestLoginModule required
    username="zookeeper"
    password="zookeeper-secret";
  };
}

我在 server.properties 中有以下配置:

sasl.enabled.mechanisms=PLAIN,OAUTHBEARER
sasl.mechanism.inter.broker.protocol=PLAIN
sasl.server.callback.handler.class=br.com.jairsjunior.security.oauthbearer.OauthAuthenticateValidatorCallbackHandler

但是如果启动 kafka 服务，我会看到如下错误:

used by: java.lang.IllegalArgumentException: Must supply exactly 1 non-null JAAS mechanism configuration (size was 2)
at org.apache.kafka.common.security.oauthbearer.internals.unsecured.OAuthBearerUnsecuredValidatorCallbackHandler.configure(OAuthBearerUnsecuredValidatorCallbackHandler.java:114)
at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:122)
... 17 more

表示kafka不允许指定多个JAAS机制配置。

那么我如何指定多个 JAAS 配置，并设置如下所示的身份验证机制:

CLient to Broker ----> OAUTHBEARER
Broker to Broker ----> PLAIN

谢谢!

Answer 1

我目前也在研究同时使用 plain 和 oauthbearer 的问题，我还没有解决这个问题，但是我通过以下方式解决了你的具体问题。这是我的 Jaas 配置:

internal.KafkaServer {
    org.apache.kafka.common.security.plain.PlainLoginModule required
    username="admin"
    password="admin-secret"
    user_admin="admin-secret"
    user_test="test";
};

external.KafkaServer {
    org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule required
};

Client {
   org.apache.zookeeper.server.auth.DigestLoginModule required
   username="username"
   password="pw";
};

然后我按照以下方式在 server.properties 中进行设置:

  inter.broker.listener.name: INTERNAL 
  sasl.mechanism.inter.broker.protocol: PLAIN
  listener.security.protocol.map: INTERNAL:SASL_PLAINTEXT,EXTERNAL:SASL_SSL
  listeners: "INTERNAL://0.0.0.0:9092,EXTERNAL://0.0.0.0:19092"
  sasl.enabled.mechanisms: PLAIN,OAUTHBEARER

  listener.name.external.oauthbearer.sasl.server.callback.handler.class: my.module.kafka.security.oauthbearer.OauthAuthenticateValidatorCallbackHandler
  listener.name.external.oauthbearer.sasl.login.callback.handler.class: my.module.kafka.security.oauthbearer.OauthAuthenticateLoginCallbackHandler

当你这样做时，你不会得到你的错误。可悲的是，当经纪人想要建立外部连接时，我又遇到了另一个错误:

javax.security.auth.callback.UnsupportedCallbackException: Unrecognized SASL Login callback
    at org.apache.kafka.common.security.authenticator.AbstractLogin$DefaultLoginCallbackHandler.handle(AbstractLogin.java:105)
    at org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule.identifyToken(OAuthBearerLoginModule.java:316)
    at org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule.login(OAuthBearerLoginModule.java:301)
    ... 32 more

kafka 经纪人似乎忽略了 oauthbearer 回调处理程序。这有点奇怪，因为当我将外部配置为唯一的监听器时，外部工作正常。

希望对您有所帮助!