Hadoop Distributed File System (HDFS) provides a distributed file system for managing and storing large-scale data. After the Hadoop cluster is successfully started, the status and information of HDFS can be accessed and monitored through the Web interface. The access port of HDFS is 50070 by default. Type http://:50070 in the browser to open the Web interface of HDFS, and view the overall status of the file system, the distribution of blocks, the health status of nodes, etc.