No serviceName defined in either JAAS or Kafka config

Kafka Connect
1

Has anyone seen below error?

org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
        at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:820)
        at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:631)
       at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:612)
        at org.apache.kafka.connect.runtime.Worker.buildWorkerTask(Worker.java:536)
        at org.apache.kafka.connect.runtime.Worker.startTask(Worker.java:467)
        at org.apache.kafka.connect.runtime.standalone.StandaloneHerder.createConnectorTasks(StandaloneHerder.java:313)
        at org.apache.kafka.connect.runtime.standalone.StandaloneHerder.updateConnectorTasks(StandaloneHerder.java:339)
        at org.apache.kafka.connect.runtime.standalone.StandaloneHerder.putConnectorConfig(StandaloneHerder.java:216)
        at org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone.java:115)
Caused by: org.apache.kafka.common.KafkaException: java.lang.IllegalArgumentException: No serviceName defined in either JAAS or Kafka config
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:158)
        at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:146)
        at org.apache.kafka.common.network.ChannelBuilders.clientChannelBuilder(ChannelBuilders.java:67)
        at org.apache.kafka.clients.ClientUtils.createChannelBuilder(ClientUtils.java:99)
        at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:741)
        ... 8 more
Caused by: java.lang.IllegalArgumentException: No serviceName defined in either JAAS or Kafka config
        at org.apache.kafka.common.security.kerberos.KerberosLogin.getServiceName(KerberosLogin.java:301)
        at org.apache.kafka.common.security.kerberos.KerberosLogin.configure(KerberosLogin.java:92)
        at org.apache.kafka.common.security.authenticator.LoginManager.<init>(LoginManager.java:61)
        at org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:112)
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:147)
        ... 12 more
[2021-05-11 19:08:33,221] INFO Created connector mongo-sink (org.apache.kafka.connect.cli.ConnectStandalone:112)
2

Hi @Natarajan77, can you give a bit more detail please?
Where are you seeing this error? Which component (Kafka Connect?)? How are you deploying it? What configuration are you using?