Kafka配置ACL+SASL的认证配置（windows版）

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如果希望Kafka支持ACL认证，我们需要完成如下的设置。

1.配置文件

　配置文件包括Zookeeper配置文件（Zookeeper.properties）。client配置文件（主要是consumer和producer:），kafka server配置文件(server.properties)

1.1 zookeeper.properties的配置文件内容是

authProvider.1=org.apache.zookeeper.server.auth.SASLAuthenticationProvider
requireClientAuthScheme=sasl
jssaLoginRenew=3600000

1.2 consumer.properties和producer.properties的配置文件如下：

security.protocol=SAAL_PLAINTEXT
sasl.mechanism=PLAIN

1.3 Kafka Server的配置文件Server.properties的配置文件如下：

# Set ip & port
listeners=SASL_PLAINTEXT://localhost:9092
advertised.listeners=SASL_PLAINTEXT://localhost:9092
# Set protocol
zookeeper.set.acl=true
security.inter.broker.protocol=SASL_PLAINTEXT
sasl.enabled.mechanisms=PLAIN
sasl.mechanism.inter.broker.protocol=PLAIN

# Add acl
allow.everyone.if.no.acl.found=true
auto.create.topics.enable=false
delete.topic.enable=true
advertised.host.name=localhost
super.users=User:admin

# Add class
authorizer.class.name=kafka.security.auth.SimpleAclAuthorizer

将以上localhost更改为目标IP地址。

2.创建JAAS文件

JAAS文件也是需要3份：Zookeeper、Kafka server和 Kafka Client。JAAS文件是位于Kafka目录下面的的Config文件夹下面。下面来分别介绍。

2.1 Zookeeper_jaas.conf文件，这个文件主要是给Zooke使用。内容如下：

Server {
   org.apache.kafka.common.security.plain.PlainLoginModule required
   username="admin"
   password="password"
   user_admin="password";
};

2.2 Kafka_server_jaas.conf文件，这个文件主要是给Kafka server使用的。内容如下：

KafkaServer {
   org.apache.kafka.common.security.plain.PlainLoginModule required
   username="admin"
   password="password"
   user_admin="password
   user_yd=password;
};

Client {
   org.apache.kafka.common.security.plain.PlainLoginModule required
   username="admin"
   password="password";
};

注意这个是两个用户配置分别是KafkaServer和Client，尽量不要写错。

Kafka Client使用的JAAS文件，可以参照上面的格式自己创建一个。

2.4 设置KAFKA_OPTS环境变量。

我们可以在Zookeeper-server-start.bat、kafka-server-start.bat、kafka-console-consumer.bat、kafka-console-producer.bat这几个文件的Setlocal下面添加

set KAFKA_OPTS=-Djava.security.auth.login.config=../../config/zookeeper_jaas.conf

上面的例子是zookeeper-server-start.bat,其他的bat可以参照上面来做。

3. 上面的配置做完后，就可以正常启动zookeeper和kafka了。

4.我在配置ACL的时候遇到一直报如下的错误：

[2021-10-18 13:12:38,363] INFO [ZooKeeperClient Kafka server] Connected. (kafka.zookeeper.ZooKeeperClient)
[2021-10-18 13:12:38,369] ERROR SASL authentication failed using login context 'Client' with exception: {} (org.apache.zookeeper.client.ZooKeeperSaslClient)
javax.security.sasl.SaslException: Error in authenticating with a Zookeeper Quorum member: the quorum member's saslToken is null.
        at org.apache.zookeeper.client.ZooKeeperSaslClient.createSaslToken(ZooKeeperSaslClient.java:312)
        at org.apache.zookeeper.client.ZooKeeperSaslClient.respondToServer(ZooKeeperSaslClient.java:275)
        at org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:882)
        at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:103)
        at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:365)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1223)
[2021-10-18 13:12:38,372] ERROR [ZooKeeperClient Kafka server] Auth failed. (kafka.zookeeper.ZooKeeperClient)
[2021-10-18 13:12:38,382] INFO EventThread shut down for session: 0x1000f723bdc0000 (org.apache.zookeeper.ClientCnxn)
[2021-10-18 13:12:38,419] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode = AuthFailed for /consumers
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:130)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
        at kafka.zookeeper.AsyncResponse.maybeThrow(ZooKeeperClient.scala:583)
        at kafka.zk.KafkaZkClient.createRecursive(KafkaZkClient.scala:1729)
        at kafka.zk.KafkaZkClient.makeSurePersistentPathExists(KafkaZkClient.scala:1627)
        at kafka.zk.KafkaZkClient.$anonfun$createTopLevelPaths$1(KafkaZkClient.scala:1619)
        at kafka.zk.KafkaZkClient.$anonfun$createTopLevelPaths$1$adapted(KafkaZkClient.scala:1619)
        at scala.collection.immutable.List.foreach(List.scala:431)
        at kafka.zk.KafkaZkClient.createTopLevelPaths(KafkaZkClient.scala:1619)
        at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:457)
        at kafka.server.KafkaServer.startup(KafkaServer.scala:191)
        at kafka.Kafka$.main(Kafka.scala:109)
        at kafka.Kafka.main(Kafka.scala)
[2021-10-18 13:12:38,421] INFO shutting down (kafka.server.KafkaServer)

报这个错误的原因是zookeeper没有设置Kafka-OPTS，在zookeeper-server-start.bat中添加

set KAFKA_OPTS=-Djava.security.auth.login.config=../../config/zookeeper_jaas.conf就可以了正常了。

其他参考链接：https://blog.csdn.net/yhdeng11402/article/details/102645947

                          https://kafka.apachecn.org/intro.html

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