Kafka连接服务器出现:Connection to node 1 (localhost/127.0.0.1:9092) could not be established

Kafka连接服务器出现:Connection to node 1 (localhost/127.0.0.1:9092) could not be established

1.安全组是否开放&防火墙是否拦截请求
2.登陆服务器查看Kafka broker是否可用
3.查看Kafka运行日志