FATAL Fatal error during KafkaServerStable startup. Prepare to shutdown (kafka.server.KafkaServerStartable) java.io.FileNotFoundException: /tmp/kafka-logs/.lock (Permission denied)

1、启动kafka的时候，报错如下所示：

 [-- ::,] INFO zookeeper state changed (SyncConnected) (org.I0Itec.zkclient.ZkClient)

 [-- ::,] FATAL Fatal error during KafkaServerStable startup. Prepare to shutdown (kafka.server.KafkaServerStartable)

 java.io.FileNotFoundException: /tmp/kafka-logs/.lock (Permission denied)

     at java.io.RandomAccessFile.open(Native Method)

     at java.io.RandomAccessFile.<init>(RandomAccessFile.java:)

     at kafka.utils.FileLock.<init>(FileLock.scala:)

     at kafka.log.LogManager$$anonfun$lockLogDirs$.apply(LogManager.scala:)

     at kafka.log.LogManager$$anonfun$lockLogDirs$.apply(LogManager.scala:)

     at scala.collection.TraversableLike$$anonfun$map$.apply(TraversableLike.scala:)

     at scala.collection.TraversableLike$$anonfun$map$.apply(TraversableLike.scala:)

     at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:)

     at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:)

     at scala.collection.TraversableLike$class.map(TraversableLike.scala:)

     at scala.collection.mutable.WrappedArray.map(WrappedArray.scala:)

     at kafka.log.LogManager.lockLogDirs(LogManager.scala:)

     at kafka.log.LogManager.<init>(LogManager.scala:)

     at kafka.server.KafkaServer.createLogManager(KafkaServer.scala:)

     at kafka.server.KafkaServer.startup(KafkaServer.scala:)

     at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:)

     at kafka.Kafka$.main(Kafka.scala:)

     at kafka.Kafka.main(Kafka.scala)

 [-- ::,] INFO [Kafka Server ], shutting down (kafka.server.KafkaServer)

 [-- ::,] INFO Terminate ZkClient event thread. (org.I0Itec.zkclient.ZkEventThread)

 [-- ::,] INFO Session: 0x262f744ac470001 closed (org.apache.zookeeper.ZooKeeper)

 [-- ::,] INFO [Kafka Server ], shut down completed (kafka.server.KafkaServer)

 [-- ::,] INFO EventThread shut down (org.apache.zookeeper.ClientCnxn)

 [-- ::,] INFO [Kafka Server ], shutting down (kafka.server.KafkaServer)

2、原因分析，主要是自己是hadoop用户操作，期间无意登陆到root权限，启动了kafka,且启动成功了，创建了如下所示的目录，而且权限是root权限的，当我切换到hadoop用户的时候，启动kafka直接报如下所示的错误：

3、可以看到目录如下所示，解决方法，可以直接将这个目录删除，重启启动kafka，然后重新生成这个目录即可：

FATAL Fatal error during KafkaServerStable startup. Prepare to shutdown (kafka.server.KafkaServerStartable) java.io.FileNotFoundException: /tmp/kafka-logs/.lock (Permission denied)