新闻资讯

当我们使用python的hdfs包进行上传和下载文件的时候，总会出现如下问题 requests.packages.urllib3.exceptions.NewConnectionError:<requests.packages.urllib3.connection.HTTPConnection object at 0x7fe87cc37c50>: Failed to establish a new connection: [Errno -2] Name or service not known  其实这主要是由于没有将各个集群节点的ip映射到/etc/hosts文件中 修改/etc/hosts文件，将各个集群节点ip映射加上即可，如博主所示 
vim /etc/hosts 192.168.20.174  hadoop04 192.168.20.173  hadoop03 192.168.20.172  hadoop02 192.168.20.171  hadoop01