Tool Decision Guides

This section provides practical decision trees and migration guides to help DevOps engineers select and transition between tools.

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Decision Trees

Infrastructure as Code: Terraform vs. Pulumi

graph TD
    A[Do you want to use general-purpose programming languages?] -->|Yes| B[Pulumi]
    A -->|No| C[Terraform]
    B --> D{Multi-cloud support needed?}
    C --> D
    D -->|Yes| E[Both are suitable]
    D -->|No| F[Choose based on team skills]

Quick Reference Table

Criteria	Terraform	Pulumi
Language	HCL	Python, TS, Go
Ecosystem	Mature	Growing
Learning Curve	Medium	Medium-High
Multi-cloud	Yes	Yes
Policy as Code	Sentinel	Open Policy Agent
Community	Large	Growing

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Migration Guides

Jenkins to GitHub Actions

Step-by-Step Migration:

1. Inventory Jenkins Jobs: List all jobs, triggers, and plugins in use.

2. Map Plugins to Actions: Find equivalent GitHub Actions or Marketplace actions.

3. Convert Pipelines:

   • Jenkinsfile → .github/workflows/*.yml

   • Example:

     name: CI
     on: [push]
     jobs:
       build:
         runs-on: ubuntu-latest
         steps:
           - uses: actions/checkout@v4
           - name: Run tests
             run: ./gradlew test

4. Secrets & Credentials: Move credentials to GitHub Secrets.

5. Test & Validate: Run workflows, compare outputs, and iterate.

6. Decommission Jenkins: After successful migration and validation.

Common Pitfalls:

• Missing plugin equivalents

• Environment differences (self-hosted vs. GitHub runners)

• Secret management changes

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See Also

• DevOps Tool Comparison 2025