Emr Bootstrap Actions

Overview

Amazon EMR Bootstrap Actions provide a unique way to customize your cluster setup by allowing you to execute shell scripts on each node of your cluster during the boot process. This is particularly useful for pre-configuring your environment or installing applications before your actual workload begins. However, users should note that this repository is currently undergoing updates and modernization.

The flexibility of bootstrap actions makes them a powerful tool for anyone looking to optimize their Amazon EMR experience. While they provide a straightforward method for customizing clusters, users are advised to thoroughly inspect the code samples provided, as they are primarily instructional and not intended for production use.

Features

• Shell Script Execution: Bootstrap actions run shell scripts stored in Amazon S3 on every node in the cluster after boot, ensuring a consistent setup across your environment.

• Default User Privileges: By default, commands are executed as the hadoop user, simplifying the configuration for common tasks.

• Root Privileges with sudo: For more advanced setups, users can execute commands with root privileges by incorporating sudo within their scripts.

• AWS CLI Integration: Easily reference bootstrap actions using the EMR create-cluster command from the AWS CLI, streamlining the cluster creation process.

• Illustrative Code Samples: The repository provides code samples aimed at helping users set up popular applications on Amazon EMR, serving as a valuable starting point for customization.

• Cautionary Advice: Users are reminded that the code samples are not production-ready and should be inspected closely before implementation to avoid potential issues.

• Ongoing Modernization: The repository is under continuous update, meaning users can expect improvements and new features over time.