Jenkins to Github Action
Improved speed
🔥 Problems with Jenkins:
~Frequent plugin compatibility issues during Jenkins upgrades
~Complex Jenkinsfile syntax and lack of native support for matrix builds
~Hard to manage secrets securely, had to rely on external plugins
~Jenkins master-slave setup required manual scaling and maintenance
~Slow feedback loop due to shared agent bottlenecks
~Difficult to onboard new devs due to self-hosted Jenkins setup
~Limited integration with GitHub PRs, requiring custom webhooks and scripts
~Poor pipeline portability across environments (staging/prod differences)
🛠️ Solutions using GitHub Actions:
✅ Migrated CI/CD workflows into declarative YAML files within each repo
✅ Used GitHub-hosted runners, eliminating the need for managing Jenkins agents
✅ Leveraged matrix builds and reusable workflows for modular pipelines
✅ Implemented GitHub Actions Secrets for secure and versioned secret management
✅ Integrated status checks on PRs, enabling auto-merge only on success
✅ Used GitHub Environments with approval gates for production deployments
✅ Reduced infra complexity — no need to maintain Jenkins server or EC2 agents
✅ Standardized pipelines across all microservices — improved code visibility
✅ Here’s a summary of what we achieved:
✅ ~40% faster builds due to GitHub-hosted runners and parallel matrix jobs
✅ Zero maintenance overhead — no Jenkins server, plugin updates, or scaling issues
✅ Improved developer velocity — easy to debug and modify YAML workflows
✅ Tighter GitHub integration — PR status, environments, reviewers, and secrets
✅ Onboarded new projects faster with templated reusable workflows
✅ Enhanced security — secrets managed natively, no third-party plugin dependency
✅ Better visibility — audit logs and commit-to-deploy traceability within GitHub
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