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In my property file I have
spring.kafka.ssl.key-store-location=${javax.net.ssl.keyStore:}

Operations confirmed that -Djavax.net.ssl.keyStore=/opt/app/config/keystore.jks is being called to start Tomcat.

Just to verify I added

@Value('${javax.net.ssl.keyStore:}')
String keystore
@Value('${spring.kafka.ssl.key-store-location:}')
String springKeystore

to one of my components and confirmed that the values are /opt/app/config/keystore.jks But the app errors out with

 org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exception is org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
 Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
 Caused by: org.apache.kafka.common.KafkaException: Failed to load SSL keystore /opt/app/webapps/ROOT/opt/app/config/keystore.jks of type JKS
 Caused by: java.nio.file.NoSuchFileException: /opt/app/webapps/ROOT/opt/app/config/keystore.jks

I confirmed that /opt/app/webapps/ROOT is where the war is exploded. So I am confused as to why the war file location is being prefixed to the keystore location when autoconfiguring the Kafka client.

Cory Wandling
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1 Answers1

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Turns out you have to add "file:" as in
spring.kafka.consumer.ssl.key-store-location=file:${javax.net.ssl.keyStore}

Cory Wandling
  • 85
  • 6