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cloudsyslab

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1. ▌
   Hadoop 121 Config · cloudsyslab

   Use this skill when configuring Apache Hadoop 1.2.1 files for a two-VM instructional cluster. This skill prepares Hadoop configuration files and verifies that the current user's SSH public key is present in ~/.ssh/authorized_keys. It must not start Hadoop daemons, stop Hadoop daemons, or format the NameNode unless the user explicitly requests that after cloning and verification are complete.
   5 installs
2. ▌
   Hadoop 121 Post Clone Startup · cloudsyslab

   Use this skill after the Hadoop 1.2.1 VM has been cloned into a two-VM instructional cluster and /etc/hosts has been updated on both VMs. This skill verifies hostname resolution, firewall ports, passwordless SSH, NameNode formatting status, Hadoop daemon startup, and daemon process status. It may run firewall, SSH test, NameNode format, startup, and verification commands only when the student explicitly asks it to run them, and it must check whether each step was already completed before running potentially destructive or duplicate commands.
   5 installs