Failed to acquire lock on file .lock in /tmp/kafka-logs. A Kafka instance in another process or thread is using this directory.

1. 问题现象

　　启动 kafka 时报错：Failed to acquire lock on file .lock in /tmp/kafka-logs. A Kafka instance in another process or thread is using this directory.

2. 解决方案

2.1 方案一

　　删除 /tmp/kafka-logs 目录，然后重启 kafka；

2.2 方案二

　　修改配置的日志文件目录

　　在 config/server.properties 中修改 log.dirs 的参数值。