Hi Team,

I am trying to stream data from kafkaconsumer using:
https://ci.apache.org/projects/flink/flink-docs-stable/dev/connectors/kafka.html

Here my KAFKA is Kerberos secured and SSL enabled.

I am running my Flink streaming in yarn-cluster on EMR 5.31.

I have tried to pass keytab/principal in following *2 Ways*:

1) Passing as JVM property in Flink run Command.

/usr/lib/flink/bin/flink run
   -yt ${app_install_path}/conf/
      \

> -Dsecurity.kerberos.login.use-ticket-cache=false
>    \
> -yDsecurity.kerberos.login.use-ticket-cache=false
>     \
> -Dsecurity.kerberos.login.keytab=${app_install_path}/conf/keytab  \
> -yDsecurity.kerberos.login.keytab=${app_install_path}/conf/.keytab \
> -Djava.security.krb5.conf=${app_install_path}/conf/krb5.conf
>    \
> -yDjava.security.krb5.conf=${app_install_path}/conf/krb5.conf
>     \
> -Dsecurity.kerberos.login.principal=x...@xx.net                 \
> -yDsecurity.kerberos.login.principal= x...@xx.net                \
> -Dsecurity.kerberos.login.contexts=Client,KafkaClient
>     \
> -yDsecurity.kerberos.login.contexts=Client,KafkaClient
>

*Here, I am getting the following Error, it seems like KEYTAB Was not
transported to the run environment and probably not found.*


*org.apache.kafka.common.KafkaException: Failed to construct kafka
consumerCaused by: java.lang.IllegalArgumentException: Could not find a
'KafkaClient' entry in the JAAS configuration. System property
'java.security.auth.login.config'*

2) Passing from flink config:  * /usr/lib/flink/conf/flink-conf.yaml*

security.kerberos.login.use-ticket-cache: false
security.kerberos.login.keytab:  ${app_install_path}/conf/keytab
security.kerberos.login.principal:  x...@xx.net
security.kerberos.login.contexts: Client,KafkaClient

*Here, I am getting the following Error, *


*org.apache.kafka.common.KafkaException: Failed to construct kafka
consumerCaused by: org.apache.kafka.common.KafkaException:
java.lang.IllegalArgumentException: No serviceName defined in either JAAS
or Kafka config*


Could you please help find, what are probable causes and resolution?

Regards,
Vijay

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