FATAL Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer) kafka.common.KafkaException: Failed to acquire lock on file .lock in /var/log/kafka-logs. A Kafka instance in another process or thread is using this directory. at kafka.log.LogManager$$anonfun$lockLogDirs$1.apply(LogManager.scala:100) at kafka.log.LogManager$$anonfun$lockLogDirs$1.apply(LogManager.scala:97) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33) at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.AbstractTraversable.map(Traversable.scala:104) at kafka.log.LogManager.lockLogDirs(LogManager.scala:97) at kafka.log.LogManager.(LogManager.scala:59) at kafka.server.KafkaServer.createLogManager(KafkaServer.scala:609) at kafka.server.KafkaServer.startup(KafkaServer.scala:183) at io.confluent.support.metrics.SupportedServerStartable.startup(SupportedServerStartable.java:100) at io.confluent.support.metrics.SupportedKafka.main(SupportedKafka.java:49)