Quadratisch. Praktisch. Gut. K8s-native Quality Assurance mit Testkube @ JCON22

Continuous Delivery ist allgegenwärtig. Wirklich? Viele Teams straucheln immer noch dabei regelmäßig gut getestete Produktinkremente zu liefern. Normalerweise mit der gleichen alten Ausrede: die (nicht)-funktionalen Tests seien zu aufwändig und zu teuer umzusetzen. Doch genau das Gegenteil ist der Fall! In diesem Vortrag gehen wir kurz auf die Bedeutung früher und regelmäßiger (nicht)-funktionale Tests von Cloud-nativen Anwendungen ein und erläutern warum monolithische CI Pipelines eine Sackgasse sind. Anschließend zeigen wir, wie einfach es ist, kontinuierliche Integrations, Performance, Security und Akzeptanz-Tests mit Hilfe von Testkube zu integrieren und direkt im Kubernetes Cluster auszuführen. #qaware #cloudnativenerd #testkube

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1. qaware.de Quadratisch. Praktisch. Gut. K8s-native Quality Assurance mit Testkube Mario-Leander Reimer mario-leander.reimer@qaware.de @LeanderReimer
2. 2 Mario-Leander Reimer Principal Software Architect @LeanderReimer #cloudnativenerd #qaware #gernperDude
3. Holistic Continuous Delivery is not so easy! QAware | 3 Continuous Delivery Low Risk Releases Less Rework Fast Time to Market Better Products Lower Costs Happier Teams Happier Users Loosely Coupled Architectures Maintainable Code Empowered Teams Continuous Security from Day 1 Test Automation Continuous Integration GitOps Deployment Automation Monitoring and Alerting
4. Holistic Software Product Quality is a lot of work! QAware | 4 Software Product Quality (ISO 25010) • Modularity • Reusability • Analysability • Modifiability • Testability Maintainability • Confidentiality • Integrity • Non-repudiation • Authenticity • Accountability Security • Adaptability • Installability • Replaceability Portability • Co-existence • Interoperability Compatibility • Maturity • Availability • Fault Tolerance • Recoverability Reliability • Time Behaviour • Resource Utilization • Capacity Efficiency • Completeness • Correctness • Appropriateness Functional Suitability • Operability • Learnability • UI Aesthetics • Accessibility Usability
5. Product Assembly Line
6. Monolithic, linear CI/CD pipelines are suboptimal and will result in delayed feedback and long release cycles. QAware | 6 Usually delayed until the end of sprint or the release. Which one first? Functionality vs. Performance vs. Security?
7. A microservice architecture with many downstream dependencies is complex and really hard to test. QAware | 7 Cluster Microservice A Microservice B Microservice C External System X External System Y Team A Team C Team B Unknown
8. Why not run (non)-functional tests against a cloud-native microservice architecture continuously or triggered on the cluster itself?
9. Core Principles and Concepts of a Product Assembly Line ▪ Separation of Concerns – Do one thing, and do one thing well. – Separate and explicitly model distinct development lifecycle phases: Build, CI, Deploy, E2E Test, … ▪ Choreography over Orchestration – Codified or configured downstream dependencies in the pipelines and triggers must be avoided. – The product assembly line (PAL) is event-driven: time-based, commit based, deployment-based, release-based, on-demand ▪ Hollywood Principle: Don’t call us. We call you! – Loose coupling. Tests and Suites do not need knowledge about components or environments – Instead the individual application build / deployment pipelines trigger the tests via events ▪ GitOps Principles – All e2e product tests as well as all components are GitOps managed. Auditable. Versioned. Easy Time Travel (e.g. revert to previous version) – Current BOM (Bill of Material) can be determined via individual state repositories ▪ Holistic Quality – Single source of (quality) truth. All relevant quality attributes are aggregated. QAware | 9
10. Conceptual PAL Architecture QAware | 10 Packages Package publish update Run deploy watch Deploy watch Dev GitOps Build push Checkout Build Test Quality Package Dev Test (E2E, NFA) trigger test Tests
11. Hello Testkube. Your friendly cloud-native testing framework for Kubernetes QAware | 11 ▪ Testkube natively integrates test orchestration and execution into Kubernetes and your CI/CD or GitOps pipeline ▪ Avoids vendor lock-in for test orchestration and execution in CI/CD pipelines ▪ Makes it possible to decouple test execution from build processes; test engineers should be able to run specific tests whenever needed ▪ Makes it easy to run any kind of tests - functional, load/performance, security, compliance, etc. in your clusters, without having to wrap them in docker-images or providing network access ▪ Provides a modular architecture for adding new types of tests and executors ▪ https://github.com/kubeshop/testkube
12. Testkube Architecture and Concepts QAware | 12 https://kubeshop.github.io/testkube/architecture
13. kubeshop/testkube lreimer/hands-on-testkube
14. Architectural fitness functions continuously validate the (non)-functional requirements of a system. QAware | 14 https://www.thoughtworks.com/de/radar/techniques/architectural-fitness-function
15. Some Architectural Fitness Function Examples QAware | 15 https://www.thoughtworks.com/de/insights/articles/fitness-function-driven-development describe "Performance" do it "completes a transaction in under 2 seconds" do expect(k6.check_transaction_round_trip_time()).to < 2 end it "has less than 10% error rate for 10000 transactions" do expect(k6.check_error_rate_for_transactions(10000)).to < .1 end end describe "Security" do describe “Static Analysis” do it "should not have plaintext secrets in codebase" do expect(code.has_secrets_in_codebase()).to_not be(true) end end describe “Dynamic Analysis” do it "should not have any of the OWASP Top 10" do expect(zap.has_owasp_top_10_vulnerabilities()).to be(false) end end end
16. Conceptual PAL Architecture QAware | 16 Packages Package publish update Run deploy watch Deploy watch Dev GitOps Build push Checkout Build Test Quality Package Dev Test (E2E, NFA) trigger test Tests Quality Cockpit report PO report Build Status Code Quality Test Results fitness promote ?
17. qaware.de QAware GmbH Aschauer Straße 32 81549 München Tel. +49 89 232315-0 info@qaware.de twitter.com/qaware linkedin.com/company/qaware-gmbh xing.com/companies/qawaregmbh slideshare.net/qaware github.com/qaware