Accessing the Logs of Hadoop Components

Here are the log locations of Hadoop components:

• The logs of ResourceManager/NodeManager are saved in /media/ephemeral0/logs/yarn.
• The logs of NameNode/DataNode are saved in /media/ephemeral0/logs/hdfs.
• The logs of the EBS upscaling are saved in /media/ephemeral0/logs/others/disk_check_daemon.log.
• The logs written by the node bootstrap script are saved in /media/ephemeral0/logs/others/node_bootstrap.log.
• The logs of the autoscaling-nodes are saved in /media/ephemeral0/logs/yarn/autoscaling.log or /media/ephemeral0/logs/yarn/scaling.log.

Hadoop Logs Location provides the location of YARN logs, daemon logs, and the MapReduce history files.