问题描述

启动需要连接kafka服务的项目，报如下错误

09:57:01.336 [http-nio-8085-exec-3] WARN  org.apache.kafka.clients.NetworkClient - [Consumer clientId=consumer-group-1, groupId=XX-group] Error connecting to node MY_HOST_NAME:9092 (id: 0 rack: null)
java.net.UnknownHostException: MY_HOST_NAME
	at java.net.InetAddress.getAllByName0(InetAddress.java:1281)
	at java.net.InetAddress.getAllByName(InetAddress.java:1193)
	at java.net.InetAddress.getAllByName(InetAddress.java:1127)
	... ...

解决方案

配置：centos下单hosts文件

vi /etc/hosts
   127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
   ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
   #未知主机 MY_HOST_NAME 和 真实kafka服务器地址的映射
   172.16.10.102 MY_HOST_NAME