PyCon 9: Continuous Delivery starts at your Development Dnvironment
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The document presents an overview of continuous delivery, emphasizing its principles and practices that enable faster software development and deployment. Key topics include the importance of automation, testing, and maintaining consistent environments to enhance deployment efficiency and reliability. It also highlights tools and methodologies that can help streamline setup and infrastructure management for development teams.
PyCon 9: Continuous Delivery starts at your Development Dnvironment
- 1. Continuous DeliveryContinuous Delivery starts at yourstarts at your DevelopmentDevelopment EnvironmentEnvironment PyCon 9, 2018PyCon 9, 2018 live slides @ tinyurl.com/py9dev
- 2. Peter BittnerPeter Bittner Developer (of people, companies, code) Co-founder Painless Software @peterbittner, django@bittner.it behave-django codeship-yaml sentrylogsdjango-apptemplates djangocms-maps
- 3. AgendaAgenda 1. Continuous Delivery Intro 2. More Than Just Servers 3. Demo: Setup Automation 4. Demo: Infrastructure Automation
- 5. Continuous DeliveryContinuous Delivery “ ... a set of practices and principles ... building, testing, and releasing software, faster and more frequently “ ... put release schedule in the hands of the business - not IT Source: https://painless.software/continuous-delivery “ .
- 6. Development ProcessDevelopment Process Automation, pipelines & DevOps. push code open PR/MR approve build review feature production system branch server system
- 7. TDD, BDD, SeleniumTDD, BDD, Selenium Tests are fundamental for build pipeline. No automated verification w/o tests No safeguarding against regression No safety net against deployments that would take the site down TDD good practice BDD helpful for acceptance Selenium / performance !!risk!!
- 8. Envs & ContainersEnvs & Containers Containers make process easier. Feature parity across environments Develop, Staging, Production identical Simplify deployments, no builds on hosts Simplify rollbacks Optional, but makes it easier Container images built by pipeline Push complete system
- 9. It's Agile (Ever Since)It's Agile (Ever Since) Source: http://agilemanifesto.org/principles.html “ Satisfy the customer!
- 10. Why Do It?Why Do It? Move FasterMove Faster release more often faster ROI less dependencies eliminate frictions Improve ConfidenceImprove Confidence high probability of success broken things can be fixed fast / easily sustainable corrections "it's worth investing" (time + effort)
- 11. CD in a NutshellCD in a Nutshell Concept Patterns Techniques Pipeline CI, automatic feedback, continuous deployment, feature toggles Empower sponsor review apps, self-service deployment, zero-downtime, canary + b/g releases Prove feature completeness BDD, TDD, automatic tests (regression, performance, penetration) Error prevention environment parity, locked-down envs, transient envs, automatic provisioning Visibility version control, dashboards, monitoring Speed fast tests, resilient / self-healing envs
- 13. What Did We Do?What Did We Do? 1. deployment 2. testing 3. environments “ Big picture Fix things we first neglect
- 14. Make It BiggerMake It Bigger We're neglecting dev infra on-boarding developers takes days no tool parity across dev PCs can't wipe PC when it behaves weird everyone asks you (how do I?) "projects" for switching technologies or introducing new tools
- 15. What's Wrong?What's Wrong? CD Pattern Anti-Pattern Automate environment config Manual setup, "work of art" Scripted setup Notes, documentation of setup Single command builds Comprehensive instructions Fix broken environments first Ignore errors, postpone fixes TDD, automate tests Manual verification + fixes Fully version controlled Parts not version controlled Visibility, dashboards, sharing Geeky "secret configurations"
- 16. Solution (part #1)Solution (part #1) Automate your setup configuration management treat your dev env like a container resist manual changes version control backup + restore your data
- 18. Solution (part #2)Solution (part #2) Automate your infrastructure fully automatic setup: desktops & servers infrastructure monitoring & mgmt complete tool chain: infra as code automatic backups (offsite) user data synchronization (offline)
- 20. Thank you!Thank you! for your precious timefor your precious time Painless SoftwarePainless Software Less pain, more fun.