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README.md

ansible-hadoop-ubuntu

Description

ansible-hadoop-ubuntu is a simple Ansible role for installing Hadoop on an Ubuntu machine.

Usage

SSH

Hadoop uses SSH keys to securely communicate between the components. The SSH key should be created on the control machine and then securely uploaded to the target machines. For example, to create a SSH key, run ssh-keygen -P '' and then use hadoop_id_rsa as the name when prompted. The HADOOP_ID_RSA variable should be the path to this newly created key. Be sure to exclude this key with .gitignore, .dockerignore, or save it outside of your playbook repo. By default the variable points to secret/hadoop_id_rsa and Ansible will test the path directly under the playbook file.

Playbook

If installing a unified Hadoop instance for Accumulo or other big data applications, be sure to provision Zookeeper first. Many big data applications don't package their own Zookeeper JARs and require zookeeper to be installed on every node, even if zookeeper is disabled. For example, your playbook should look something like this:

...
roles:
  - ansible-java-ubuntu
  - ansible-zookeeper-ubuntu
  - ansible-hadoop-ubuntu
...

Contributing

Spatial Current, Inc. is currently accepting pull requests for this repository. We'd love to have your contributions! Please see Contributing.md for how to get started.

License

This work is distributed under the MIT License. See LICENSE file.

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