1、启动kafka的脚本程序报如下所示的错误：
1 [hadoop@slaver1 script_hadoop]$ kafka- [hadoop@slaver
阅读背景：
WARN Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn) java.net.ConnectException: Connection refused
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