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53 lab-nfs

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53 lab-nfs

  1. 1. LAB: NFS July 2012LAB: NFSGoalIn these exercises you will transfer data to and from your cluster via two separatemethods to understand the differences between each of these processes.Exercise: hadoopfs Connect to your node via ssh Create a text file in the pwd of your local filesystem o touch test.txt List the contents of your local pwd o ls List the contents of your volume on the cluster o hadoopfs -ls /<your_volume> Create a directory within your volume on the cluster o hadoopfs -mkdir /<your_volume>/<some_dir> Copy the local text file you created in the previous step to the directory within your volume on the cluster o hadoopfs -put test.txt /<your_volume>/<some_dir> List the contents of the directory within your volume on the cluster to verify that the copy was successful o hadoopfs –ls /<your_volume>/<some_dir>Exercise: Mount the Cluster to Itself and Copy a File Connect to your node via ssh List the NFS shares currently exported on the node sudoshowmount -e <your_node_hostname> Set up a mount point for the NFS share sudomkdir /<cluster_mount_point> Mount the cluster via NFS sudo mount –o nolock<your_node_hostname>:/<cluster_mount_point> Copy a file from your local node filesystem to the cluster sudocp /tmp/test.txt/<cluster_mount_point>/<cluster_name>/< your_volume>/<some_dir>/ Verify that the file is now in the cluster with hadoopfs hadoopfs -ls /<your_volume>/<some_dir>© 2012 by MapR Technologies Page 1 of 1

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