一、环境准备：

centos环境下，借助docker安装kafka,安装kafka之前我们需要安装Zookeeper；
一个典型的Kafka集群中包含以下：

若干Produce；

若干broker（broker数量越多，集群吞吐率越高）；

若干Consumer Group，以及一个Zookeeper集群。

Kafka通过Zookeeper管理集群配置，选举leader，以及在Consumer Group发生变化时进行rebalance。Producer使用push模式将消息发布到broker，Consumer使用pull模式从broker订阅并消费消息。

下载kafka、zookeeper镜像：

#下载kafka镜像[root@jason jiahongfei]# docker pull wurstmeister/kafkaUsing default tag: latestlatest: Pulling from wurstmeister/kafkae7c96db7181b: Pull complete f910a506b6cb: Pull complete b6abafe80f63: Pull complete c7db1651fcd4: Pull complete 3a06d69a6954: Pull complete 18616ed64100: Pull complete Digest: sha256:a9980b591efe62a68de0acf5f5ce2f6fa7112ab07ec1099c976cdadc740c7ea4Status: Downloaded newer image for wurstmeister/kafka:latest#下载zookeeper镜像[root@jason jiahongfei]# docker pull wurstmeister/zookeeperUsing default tag: latestlatest: Pulling from wurstmeister/zookeepera3ed95caeb02: Pull complete ef38b711a50f: Pull complete e057c74597c7: Pull complete 666c214f6385: Pull complete c3d6a96f1ffc: Pull complete 3fe26a83e0ca: Pull complete 3d3a7dd3a3b1: Pull complete f8cc938abe5f: Pull complete 9978b75f7a58: Pull complete 4d4dbcc8f8cc: Pull complete 8b130a9baa49: Pull complete 6b9611650a73: Pull complete 5df5aac51927: Pull complete 76eea4448d9b: Pull complete 8b66990876c6: Pull complete f0dd38204b6f: Pull complete Digest: sha256:7a7fd44a72104bfbd24a77844bad5fabc86485b036f988ea927d1780782a6680Status: Downloaded newer image for wurstmeister/zookeeper:latest

启动kafka、zookeeper镜像：

#启动zookeepter镜像：docker run -d --name zookeeper -p 2181:2181 -t wurstmeister/zookeeper#启动kafka镜像docker run -d --name kafka -p 9092:9092 -e KAFKA_BROKER_ID=0 -e KAFKA_ZOOKEEPER_CONNECT=192.168.0.105:2181 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.0.105:9092 -e KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -t wurstmeister/kafkaKAFKA_BROKER_ID=0KAFKA_ZOOKEEPER_CONNECT=192.168.0.105:2181KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.0.105:9092KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092#KAFKA_ZOOKEEPER_CONNECT  配置的是zookeeper的地址，可以单节点配置，也可以配置zookeeper集群多节点，用逗号隔开

注：容器操作辅助指令：

查看目前有哪些容器：docker container ls

暂停容器：docker container stop XXXXXXXXXXX #容器编号

删除容器：docker container rm XXXXXXXXXXX

二、配置中心项目pom.xml 引入kafka自动装配jar包：


        
     
      org.springframework.cloud
         
     
      spring-cloud-starter-bus-kafka

三、修改application.yml,引入kafka地址配置：

spring:  application:    name: spring-cloud-config-server-9091  cloud:    config:      server:        git:          uri: XXXXXX.git          username: XXXXXX          password: XXXXXX    bus:      enabled: true      trace:        enabled: true      refresh:        enabled: true  kafka:    bootstrap-servers: 192.168.0.105:9092    consumer:      group-id: config-serverserver:  port: 9091eureka:  client:    service-url:      defaultZone: http://localhost:9090/eurekamanagement:  endpoints:    web:      exposure:        exclude: bus-refresh

服务的消费者，同样需要引入上面的kafka配置

四、启动Spring-Config-Server

启动日志如下：

2020-07-17 23:47:42.669  INFO 6392 --- [           main] j.s.s.SpringCloudConfigServerApplication : No active profile set, falling back to default profiles: default2020-07-17 23:47:43.801  WARN 6392 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'bus-env' contains invalid characters, please migrate to a valid format.2020-07-17 23:47:44.114  WARN 6392 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'bus-refresh' contains invalid characters, please migrate to a valid format.2020-07-17 23:47:44.204  WARN 6392 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.2020-07-17 23:47:44.484  INFO 6392 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=61cdd14d-e26e-3416-a945-6a6c14a92ba92020-07-17 23:47:44.604  INFO 6392 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created.2020-07-17 23:47:44.611  INFO 6392 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'taskScheduler' has been explicitly defined. Therefore, a default ThreadPoolTaskScheduler will be created.2020-07-17 23:47:44.616  INFO 6392 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created.2020-07-17 23:47:44.739  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationChannelResolver' of type [org.springframework.integration.support.channel.BeanFactoryChannelResolver] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:44.741  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationDisposableAutoCreatedBeans' of type [org.springframework.integration.config.annotation.Disposables] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:44.761  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:44.766  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration$IntegrationJmxConfiguration' of type [org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration$IntegrationJmxConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:44.781  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration' of type [org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:44.786  INFO 6392 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'mbeanServer' of type [com.sun.jmx.mbeanserver.JmxMBeanServer] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2020-07-17 23:47:45.729  INFO 6392 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 9091 (http)2020-07-17 23:47:45.869  INFO 6392 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]2020-07-17 23:47:45.871  INFO 6392 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.35]2020-07-17 23:47:46.051  INFO 6392 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext2020-07-17 23:47:46.051  INFO 6392 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3360 ms2020-07-17 23:47:46.181  WARN 6392 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.2020-07-17 23:47:46.181  INFO 6392 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.2020-07-17 23:47:46.196  INFO 6392 --- [           main] c.netflix.config.DynamicPropertyFactory  : DynamicPropertyFactory is initialized with configuration sources: com.netflix.config.ConcurrentCompositeConfiguration@37854b342020-07-17 23:47:46.374  WARN 6392 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.2020-07-17 23:47:46.374  INFO 6392 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.2020-07-17 23:47:46.617  INFO 6392 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'2020-07-17 23:47:47.839  INFO 6392 --- [           main] o.s.s.c.ThreadPoolTaskScheduler          : Initializing ExecutorService 'taskScheduler'2020-07-17 23:47:47.867  INFO 6392 --- [           main] onConfiguration$FunctionBindingRegistrar : Functional binding is disabled due to the presense of @EnableBinding annotation in your configuration2020-07-17 23:47:49.584  WARN 6392 --- [           main] ockingLoadBalancerClientRibbonWarnLogger : You already have RibbonLoadBalancerClient on your classpath. It will be used by default. As Spring Cloud Ribbon is in maintenance mode. We recommend switching to BlockingLoadBalancerClient instead. In order to use it, set the value of `spring.cloud.loadbalancer.ribbon.enabled` to `false` or remove spring-cloud-starter-netflix-ribbon from your project.2020-07-17 23:47:50.214  INFO 6392 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 2 endpoint(s) beneath base path '/actuator'2020-07-17 23:47:50.938  INFO 6392 --- [           main] o.s.c.s.m.DirectWithAttributesChannel    : Channel 'application-1.springCloudBusInput' has 1 subscriber(s).2020-07-17 23:47:51.123  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel errorChannel2020-07-17 23:47:51.253  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel springCloudBusInput2020-07-17 23:47:51.295  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel nullChannel2020-07-17 23:47:51.318  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel springCloudBusOutput2020-07-17 23:47:51.335  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageHandler org.springframework.cloud.stream.binding.StreamListenerMessageHandler@3e9beef22020-07-17 23:47:51.418  INFO 6392 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageHandler errorLogger2020-07-17 23:47:51.456  INFO 6392 --- [           main] o.s.i.endpoint.EventDrivenConsumer       : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel2020-07-17 23:47:51.460  INFO 6392 --- [           main] o.s.i.channel.PublishSubscribeChannel    : Channel 'application-1.errorChannel' has 1 subscriber(s).2020-07-17 23:47:51.461  INFO 6392 --- [           main] o.s.i.endpoint.EventDrivenConsumer       : started bean '_org.springframework.integration.errorLogger'2020-07-17 23:47:51.891  WARN 6392 --- [           main] b.k.p.KafkaBinderConfigurationProperties : Ignoring provided value(s) for 'group.id'. Use spring.cloud.stream.default.group or spring.cloud.stream.binding.
   
    .group to specify the group instead of group.id2020-07-17 23:47:51.983  INFO 6392 --- [           main] o.s.c.s.b.k.p.KafkaTopicProvisioner      : Using kafka topic for outbound: springCloudBus2020-07-17 23:47:51.988  INFO 6392 --- [           main] o.a.k.clients.admin.AdminClientConfig    : AdminClientConfig values: 	bootstrap.servers = [192.168.0.105:9092]	client.dns.lookup = default	client.id = 	connections.max.idle.ms = 300000	default.api.timeout.ms = 60000	metadata.max.age.ms = 300000	metric.reporters = []	metrics.num.samples = 2	metrics.recording.level = INFO	metrics.sample.window.ms = 30000	receive.buffer.bytes = 65536	reconnect.backoff.max.ms = 1000	reconnect.backoff.ms = 50	request.timeout.ms = 30000	retries = 2147483647	retry.backoff.ms = 100	sasl.client.callback.handler.class = null	sasl.jaas.config = null	sasl.kerberos.kinit.cmd = /usr/bin/kinit	sasl.kerberos.min.time.before.relogin = 60000	sasl.kerberos.service.name = null	sasl.kerberos.ticket.renew.jitter = 0.05	sasl.kerberos.ticket.renew.window.factor = 0.8	sasl.login.callback.handler.class = null	sasl.login.class = null	sasl.login.refresh.buffer.seconds = 300	sasl.login.refresh.min.period.seconds = 60	sasl.login.refresh.window.factor = 0.8	sasl.login.refresh.window.jitter = 0.05	sasl.mechanism = GSSAPI	security.protocol = PLAINTEXT	security.providers = null	send.buffer.bytes = 131072	ssl.cipher.suites = null	ssl.enabled.protocols = [TLSv1.2]	ssl.endpoint.identification.algorithm = https	ssl.key.password = null	ssl.keymanager.algorithm = SunX509	ssl.keystore.location = null	ssl.keystore.password = null	ssl.keystore.type = JKS	ssl.protocol = TLSv1.2	ssl.provider = null	ssl.secure.random.implementation = null	ssl.trustmanager.algorithm = PKIX	ssl.truststore.location = null	ssl.truststore.password = null	ssl.truststore.type = JKS2020-07-17 23:47:52.073  INFO 6392 --- [           main] o.a.kafka.common.utils.AppInfoParser     : Kafka version: 2.5.02020-07-17 23:47:52.076  INFO 6392 --- [           main] o.a.kafka.common.utils.AppInfoParser     : Kafka commitId: 66563e712b0b9f842020-07-17 23:47:52.076  INFO 6392 --- [           main] o.a.kafka.common.utils.AppInfoParser     : Kafka startTimeMs: 1595000872073

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