kafka命令行生产者报错，无法启动命令行生产者报错！

报错信息如下

org.apache.kafka.common.KafkaException: Failed to construct kafka producer at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:431) at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:301) at kafka.tools.ConsoleProducer$.main(ConsoleProducer.scala:45) at kafka.tools.ConsoleProducer.main(ConsoleProducer.scala) Caused by: org.apache.kafka.common.KafkaException: java.lang.IllegalArgumentException: Conflicting serviceName values found in JAAS and Kafka configs value in JAAS file impala, value in Kafka config kafka at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:153) at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:140) at org.apache.kafka.common.network.ChannelBuilders.clientChannelBuilder(ChannelBuilders.java:65) at org.apache.kafka.clients.ClientUtils.createChannelBuilder(ClientUtils.java:108) at org.apache.kafka.clients.producer.KafkaProducer.newSender(KafkaProducer.java:439) at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:420) … 3 more Caused by: java.lang.IllegalArgumentException: Conflicting serviceName values found in JAAS and Kafka configs value in JAAS file impala, value in Kafka config kafka at org.apache.kafka.common.security.kerberos.KerberosLogin.getServiceName(KerberosLogin.java:293) at org.apache.kafka.common.security.kerberos.KerberosLogin.configure(KerberosLogin.java:92) at org.apache.kafka.common.security.authenticator.LoginManager.(LoginManager.java:60) at org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:111) at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:142)

报错原因

因为配置了两个环境变量且两个环境变量配置的不一致！ export KAFKA_OPTS="$KAFKA_OPTS -Djava.security.krb5.conf=/etc/krb5.conf -Djava.security.auth.login.config=/opt/flink-1.8.1/conf/jaas.conf"

第一个配置，在命令行生产者脚本中。 kafka-console-producer.sh 第二个配置，配置在系统环境中，系统环境存在三种配置，以下只是其中一种。（https://www.cnblogs.com/jpfss/p/11107080.html） /etc/profile

解决办法

删除脚本kafka-console-producer.sh中的相同配置