kafka 不适合我第一次使用 Connection denied .ZooKeeperClient

Question

我第一次安装 kafka。 我想开始它。 当我运行 .\bin\windows\kafka-server-start.bat .\config\server.properties 我得到了这个结果

[2021-10-08 10:03:43,563] INFO Socket error occurred: localhost/0:0:0:0:0:0:0:1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:44,693] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:46,743] INFO Socket error occurred: localhost/0:0:0:0:0:0:0:1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:47,873] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:49,928] INFO Socket error occurred: localhost/0:0:0:0:0:0:0:1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:51,043] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:53,093] INFO Socket error occurred: localhost/0:0:0:0:0:0:0:1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:54,233] INFO Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:56,283] INFO Socket error occurred: localhost/127.0.0.1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:57,403] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:59,443] INFO Socket error occurred: localhost/0:0:0:0:0:0:0:1:2181: Connection refused: no further information (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:59,523] INFO [ZooKeeperClient Kafka server] Closing. (kafka.zookeeper.ZooKeeperClient)
[2021-10-08 10:03:59,683] INFO Session: 0x0 closed (org.apache.zookeeper.ZooKeeper)
[2021-10-08 10:03:59,693] INFO EventThread shut down for session: 0x0 (org.apache.zookeeper.ClientCnxn)
[2021-10-08 10:03:59,708] INFO [ZooKeeperClient Kafka server] Closed. (kafka.zookeeper.ZooKeeperClient)
[2021-10-08 10:03:59,713] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING
        at kafka.zookeeper.ZooKeeperClient.waitUntilConnected(ZooKeeperClient.scala:271)
        at kafka.zookeeper.ZooKeeperClient.<init>(ZooKeeperClient.scala:125)
        at kafka.zk.KafkaZkClient$.apply(KafkaZkClient.scala:1948)
        at kafka.server.KafkaServer.createZkClient$1(KafkaServer.scala:431)
        at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:456)
        at kafka.server.KafkaServer.startup(KafkaServer.scala:191)
        at kafka.Kafka$.main(Kafka.scala:109)
        at kafka.Kafka.main(Kafka.scala)
[2021-10-08 10:03:59,723] INFO shutting down (kafka.server.KafkaServer)
[2021-10-08 10:03:59,743] INFO App info kafka.server for 0 unregistered (org.apache.kafka.common.utils.AppInfoParser)
[2021-10-08 10:03:59,743] INFO shut down completed (kafka.server.KafkaServer)
[2021-10-08 10:03:59,743] ERROR Exiting Kafka. (kafka.Kafka$)
[2021-10-08 10:03:59,752] INFO shutting down (kafka.server.KafkaServer)

Answer 1

为了启动kafka

1. 启动动物园管理员
2. 启动kafka服务器

Kafka 服务器依赖于 zookeeper。 为了了解流程，请访问以下提到的站点， https://www.javainuse.com/misc/apache-kafka-hello-world