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Explain the Terraform lifecycle for deploying a new cluster on AWS

Cloud/Toolseasy0.2 min read

Lifecycle: init (providers, backend) → plan (diff) → apply (create/update) → destroy (optional). For EMR: Define aws_emr_cluster, instance groups, security groups, IAM. Variables for sizing. Why: Reproducible; versioned....

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Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
JP Morgan

Why This Question Matters

This easy-level Cloud/Tools question appears frequently in data engineering interviews at companies like JP Morgan. While less common, it tests deeper understanding that distinguishes strong candidates.

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Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.

Expert Answer
42 words

Lifecycle: init (providers, backend) → plan (diff) → apply (create/update) → destroy (optional). For EMR: Define aws_emr_cluster, instance groups, security groups, IAM. Variables for sizing. Why: Reproducible; versioned. Best practice: Remote state (S3 + DynamoDB); plan in CI; workspaces for envs; validate.

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