Hi Diego, I think the problem is here:
security.kerberos.login.contexts: Client, KafkaClient The space between “Client,” and “KafkaClient” is causing the problem. Removing it should fix your issue. Cheers, Gordon On April 11, 2017 at 3:24:20 AM, Diego Fustes Villadóniga (dfus...@oesia.com) wrote: Hi all, I’m trying to connect to a kerberized Kafka cluster from Flink 1.2.0. I’ve configured Flink correctly following instructions to get the credentials from a given keytab. Here is the configuration: security.kerberos.login.keytab: /home/biguardian/biguardian.keytab security.kerberos.login.principal: biguardian security.kerberos.login.use-ticket-cache: false security.kerberos.login.contexts: Client, KafkaClient However, I get this error: org.apache.kafka.common.KafkaException: java.lang.IllegalArgumentException: Could not find a 'KafkaClient' entry in `/tmp/jaas-522055201249067191.conf` Indeed, the JAAS file is empty. Do yon know what may be happening? Diego Fustes Villadóniga, Arquitecto Big Data, CCIM