无法启动融合架构注册表

Question

我已经在Ubuntu 16.04机器上安装了合流平台，并初步配置了zookeeper、Kafka和ksql，启动了合流平台。我可以看到下面的消息。

 root@DESKTOP-DIB3097:/opt/kafkafull/confluent-5.1.0/bin# ./confluent start
 This CLI is intended for development only, not for production
 https://docs.confluent.io/current/cli/index.html
 Using CONFLUENT_CURRENT: /tmp/confluent.HUlCltYT
 Starting zookeeper
 zookeeper is [UP]
 Starting kafka
 kafka is [UP]
 Starting schema-registry
 schema-registry is [UP]
 Starting kafka-rest
 kafka-rest is [UP]
 Starting connect
 connect is [UP]
 Starting ksql-server
 ksql-server is [UP]
 Starting control-center
 control-center is [UP]

现在一切都启动了，当我检查融合平台的状态时，我观察到Schema注册表，连接

我已经检查了schema注册表的日志，找到了下面的日志。

ERROR Error starting the schema registry (io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication)
io.confluent.kafka.schemaregistry.exceptions.SchemaRegistryInitializationException: Error initializing kafka store while initializing schema registry
        at io.confluent.kafka.schemaregistry.storage.KafkaSchemaRegistry.init(KafkaSchemaRegistry.java:210)
        at io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication.initSchemaRegistry(SchemaRegistryRestApplication.java:61)
        at io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication.setupResources(SchemaRegistryRestApplication.java:72)
        at io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication.setupResources(SchemaRegistryRestApplication.java:39)
        at io.confluent.rest.Application.createServer(Application.java:201)
        at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:41)
Caused by: io.confluent.kafka.schemaregistry.storage.exceptions.StoreInitializationException: io.confluent.kafka.schemaregistry.storage.exceptions.StoreException: Failed to write Noop record to kafka store.
        at io.confluent.kafka.schemaregistry.storage.KafkaStore.init(KafkaStore.java:137)
        at io.confluent.kafka.schemaregistry.storage.KafkaSchemaRegistry.init(KafkaSchemaRegistry.java:208)
        ... 5 more
Caused by: io.confluent.kafka.schemaregistry.storage.exceptions.StoreException: Failed to write Noop record to kafka store.
        at io.confluent.kafka.schemaregistry.storage.KafkaStore.getLatestOffset(KafkaStore.java:422)
        at io.confluent.kafka.schemaregistry.storage.KafkaStore.waitUntilKafkaReaderReachesLastOffset(KafkaStore.java:275)
        at io.confluent.kafka.schemaregistry.storage.KafkaStore.init(KafkaStore.java:135)
        ... 6 more
Caused by: java.util.concurrent.TimeoutException: Timeout after waiting for 60000 ms.
        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:78)
        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:30)
        at io.confluent.kafka.schemaregistry.storage.KafkaStore.getLatestOffset(KafkaStore.java:417)
        ... 8 more

Answer 1

我想，我找到了答案，

在Kafka配置文件中添加属性主机.name=host_ip_address它将充当Kafka代理主机。因此，在 Kafka 引导属性所在的所有配置文件中，将其更改为相应的主机名或 IP 地址，如下所示。

bootstrap.servers=192.168.0.193:9092

示例:在模式注册表配置中，我已将以下属性从本地主机更改为相应的IP地址

kafkastore.bootstrap.servers=PLAINTEXT://192.168.0.193:9092 ##

在其他文件中，检查属性bootstrap.servers=192.168.0.193:9092是否正确引用。还检查模式注册表配置文件是否正确引用。

（实际上，您可以检查和比较/tmp/confluentkafka日志中的配置文件）

现在，在更改所有配置文件后，服务已启动并运行。

Answer 2

在< code > $ CONFLUENT _ HOME/etc/Kafka 中，您会看到server.properties。

取消对以下内容的注释并按以下方式更新

>

侦听器=PLAINTEXT：//0.0.0.0:9092

< code > advertised . listeners = PLAINTEXT://localhost:9092

listener.security.protocol.map=PLAINTEXT:PLAINTEXT，SSL:SSL，SASL_PLAINTEXT:SASL_PLA INTEXT，SASL_SSL:SASL_SSL

在$CONFLUENT_HOME/etc/schema注册表中，您将看到模式注册表。属性，按如下方式打开和更新

1. 监听器=http://0.0.0.0:9092