Next-gen CI/CD with Gitops and Progressive Delivery

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@kevindubois Next-gen CI/CD with Gitops and Progressive Delivery Kevin Dubois Principal Developer Advocate, Red Hat @kevindubois

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@kevindubois Kevin Dubois ★ Java Champion ★ Principal Developer Advocate at Red Hat ★ Based in Belgium 󰎐 ★ Speak English, Dutch, French, Italian ★ Open Source Contributor (Quarkus, Camel, Knative, ..) ★ Community Organizer (BeJUG, BeCNCF) @[email protected] youtube.com/@thekevindubois linkedin.com/in/kevindubois github.com/kdubois @kevindubois.com

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@kevindubois How it started…

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@kevindubois

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@kevindubois

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@kevindubois CI / CD

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@kevindubois CI / CD Build Test Security Checks Release Deploy Stage Deploy Prod Continuous Integration Continuous Delivery Manual

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@kevindubois Every 4 months Every week/day/hour

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@kevindubois Continuous Developer Flow Outer loop Inner loop Pull/Merge Request Production Build / Package Code Push Debug Code Review Build Deploy Security Tests Compliance Inner loop Outer loop Developer Test

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@kevindubois CI - CD - CD Build Test Security Checks Release Deploy Stage Deploy Prod Continuous Integration Continuous Delivery Continuous Deployment Manual Auto

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@kevindubois Let’s play a little game :)

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@kevindubois The application Push to give energy windmill Kafka Topic 2.Sends the interaction Dashboard: Green Energy Nickname Team Push/Tap to generate energy Cars that need energy Two teams competing (top 5 players) First wins

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@kevindubois Architecture 3: Generate power (REST) Game Dashboard 1: Assign player Name & Team (REST) 6: Update dashboard (SSE) 2: Increment player cluster counter 4: Send power event 5: Receive power events

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@kevindubois 14 Team Köttbullar

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@kevindubois vs … 15

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@kevindubois Team Surströmming

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@kevindubois YOU PLAY! Scan the QR Code with your phone to play

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@kevindubois What if we added a new feature?

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@kevindubois Dev Ops Friday | 4:45 PM Wall of confusion

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@kevindubois Live Coding

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@kevindubois

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@kevindubois Developer Flow Outer loop Inner loop Pull/Merge Request Production Build / Package Code Push Debug Code Review Build Deploy Security Tests Compliance Inner loop Outer loop Developer Test

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@kevindubois Serverless CI Containers Built for container apps and runs on Kubernetes Designed with microservices and distributed teams in mind DevOps Serverless Runs serverless with no CI/CD engine to manage and maintain

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@kevindubois Why Cloud-Native CI/CD? Traditional CI/CD Cloud-Native CI/CD Designed for Virtual Machines Designed for Containers and Kubernetes Require IT Ops for CI engine maintenance Pipeline as a service with no Ops overhead Plugins shared across CI engine Pipelines fully isolated from each other Plugin dependencies with undefined update cycles Everything lifecycled as container images No interoperability with Kubernetes resources Native Kubernetes resources Admin manages persistence Platform manages persistence Config baked into CI engine container Configured via Kubernetes ConfigMaps Declarative !

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@kevindubois Tekton is a Graduated Continuous Delivery Foundation project and follows the OpenSSF best practices. Contributions from Google, Red Hat, Cloudbees, IBM, Elastic, Puppet, and many more An open-source project for providing a set of shared and standard components for building Kubernetes-style CI/CD systems https://tekton.dev

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@kevindubois Step • Runs commands within container(builder image) • Mounts volumes, uses env vars • Eg. ‘mvn test’ or ‘git clone’ Task • A list of steps that are executed in sequential order • Takes inputs, outputs parameters Task Run • Runs a individual Task Pipeline • List of tasks defined to run in a certain order • Takes inputs, outputs parameters Pipeline Run • Runs a Pipeline Typed Decoupled Cloud Native Declarative Tekton Concepts

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@kevindubois apiVersion: tekton.dev/v1beta1 kind: Pipeline metadata: name: wind-turbine-pipeline spec: params: - name: MANIFESTS_GIT_REPO type: string tasks: - name: git-clone params: - name: url value: $(params.GIT_REPO) workspaces: - name: output workspace: source workspaces: - name: source

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@kevindubois Tekton Hub Search, discover and install Tekton Tasks hub.tekton.dev

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@kevindubois Tekton CLI(tkn) •List and Describe • Pipeline • Resource • Task • Task Run • Pipeline Run •View logs • Task Run • Pipeline Run •https://github.com/tektoncd/cli

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@kevindubois Gitops

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@kevindubois What is GitOps? Treat everything as code Git is the single source of truth Operations through Git workflows

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@kevindubois CI/CD Engines Jenkins Spinnaker Tekton Concourse CI …... CI/CD versus GitOps Desired State Cluster State Observe State Take Action GitOps Engines ACM, ArgoCD, FluxCD Razee, Faros Desired State Cluster State

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@kevindubois ArgoCD Sync Monitor Detect drift Take action Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Cluster and application configuration versioned in Git Automatically syncs configuration from Git to clusters Drift detection, visualization and correction

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@kevindubois Source Git Repository Image Registry CI GitOps Application Delivery Model

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@kevindubois Source Git Repository Image Registry CI Config Git Repository Kubernetes CD Pull Request / Commit Push Pull GitOps Application Delivery Model

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@kevindubois GitOps Application Delivery Model Push Pull Pull Request Source Git Repository Image Registry Config Git Repository Kubernetes Deploy Monitor Detect drift CD Take action

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@kevindubois V2 Scan the QR Code with your phone to play

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@kevindubois By default: a big bang / all or nothing release

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@kevindubois Progressive Delivery

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@kevindubois What is Progressive Delivery? ● No Big Bang ● Deploy != Release ● Metrics ● Subset of Users

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@kevindubois Why Progressive Delivery? ● Decreases Downtime ● Limits the Tragedy ● Deploy & Release to Production faster ● Less mocking or setting up unreliable ‘fake’ services

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@kevindubois Delivery Techniques

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@kevindubois Blue Green Deployment ● All Or Nothing ● Quick Rollback 45

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@kevindubois Canary Releases ● Small Percentage ● Increase depending on metrics 46

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@kevindubois Dark Launches ● Mirroring Traffic ● Dark Canaries ● Feature Flags 47

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@kevindubois The New Pyramid? 49

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@kevindubois How to accomplish Progressive Delivery 50

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@kevindubois Accomplishing Progressive Delivery with 51

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@kevindubois Blue - Green apiVersion: v1 kind: Service metadata: name: my-service labels: app: mystuff spec: ports: - name: http port: 8000 selector: inservice: mypods type: LoadBalancer apiVersion: apps/v1 kind: Deployment metadata: name: mynode-deployment spec: replicas: 1 selector: matchLabels: app: mynode template: metadata: labels: app: mynode spec: containers: - name: mynode image: quay.io/rhdevelopers/mynode:v1 ports: - containerPort : 8000 kubectl label pod -l app=mynode inservice=mypods 52

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@kevindubois Canary Releases kubectl scale deployment myapp-v1 --replicas=3 kubectl scale deployment myapp-v2 --replicas=1 53

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@kevindubois

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@kevindubois Controlling Microservices with a Service Mesh Code Independent (Polyglot) • Intelligent Routing and Load-Balancing • Smarter Canary Releases • Dark Launch • Chaos: Fault Injection • Resilience: Circuit Breakers • Observability & Telemetry: Metrics and Tracing • Security: Encryption & Authorization • Fleet wide policy enforcement 55

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@kevindubois Istio Architecture Control Plane The data plane is composed of a set of intelligent proxies (Envoy) deployed as sidecars. These proxies mediate and control all network communication between microservices. They also collect and report telemetry on all mesh traffic. The control plane manages and conﬁgures the proxies to route traffic. Data Plane

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@kevindubois Pod Container JVM Service A Sidecar Container Pod Container JVM Service C Sidecar Container Pod Container JVM Service B Sidecar Container The sidecar intercepts all network traffic 57

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@kevindubois Canary Release apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: recommendation spec: hosts: - recommendation http: - route: - destination: host: recommendation subset: version-v1 weight: 75 - destination: host: recommendation subset: version-v2 weight: 25 58

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@kevindubois Shadowing Traffic apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: recommendation spec: hosts: - recommendation http: - route: - destination: host: recommendation subset: version-v1 mirror: host: recommendation subset: version-v2 59

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@kevindubois Dark Canary apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: recommendation spec: hosts: - recommendation http: - match: - headers: end-user: exact: Alexandra route: - destination: host: recommendation subset: version-v2 - route: - destination: host: recommendation subset: version-v1 60

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@kevindubois Automated Progressive Delivery 61

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@kevindubois Argo Rollouts 62

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@kevindubois Argo Rollouts ArgoCD detects change rollout Monitors Data 63

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@kevindubois Rolling out automatically apiVersion: argoproj.io/v1alpha1 kind: Rollout metadata: name: rollouts-demo labels: app: rollouts-demo spec: strategy: canary: steps: - setWeight: 20 - pause: duration: "1m" - setWeight: 50 - pause: duration: "2m" canaryService: rollouts-demo-canary stableService: rollouts-demo-backend trafficRouting: istio: virtualService: name: rollout-vsvc routes: - primary … 64

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@kevindubois “Smart” Progressive Delivery Based on Metrics 65

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@kevindubois Metrics Based Rollouts strategy: canary: analysis: args: - name: service-name value: rollouts-demo-canary.canary.svc.cluster.local templates: - templateName: success-rate canaryService: rollouts-demo-canary stableService: rollouts-demo-stable trafficRouting: istio: virtualService: name: rollout-vsvc routes: - primary steps: - setWeight: 30 - pause: { duration: 20s } - setWeight: 40 - pause: { duration: 10s } - setWeight: 60 - pause: { duration: 10s } - setWeight: 80 - pause: { duration: 5s } - setWeight: 90 - pause: { duration: 5s } - setWeight: 100 - pause: { duration: 5s } 66

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@kevindubois apiVersion: argoproj.io/v1alpha1 kind: AnalysisTemplate metadata: name: success-rate spec: args: - name: service-name metrics: - name: success-rate interval: 10s successCondition: len(result) == 0 || result[0] >= 0.95 failureLimit: 2 provider: prometheus: address: https://internal:[email protected]:9090 query: | sum(irate(istio_requests_total{ reporter="source", destination_service=~"{{args.service-name}}", response_code!~"5.*"}[30s]) ) Metrics Based Rollouts 67

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@kevindubois Progressive Delivery Demo @kevindubois 68 🚀🚀🚀

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@kevindubois Final Notes ● State is always hard ○ start with stateless; work with features; non-destructive schema changes; event-driven architectures (use eg. Debezium to work with ‘classic’ DBs). ● Step by Step ● Embrace GitOps ● If you haven’t automatically destroyed something by mistake, you aren’t automating enough ● Demos ○ https://dn.dev/istio-tutorial ○ https://github.com/kdubois/progressive-delivery ○ https://github.com/redhat-developer-demos/bubbles-progressive-delivery ○ github.com/redhat-developer-demos/quinoa-wind-turbine 69

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@kevindubois Free Developer e-Books! https://developers.redhat.com/eventtutorials

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@kevindubois Start exploring in the OpenShift Sandbox. Learn containers, Kubernetes, and OpenShift in your browser. developers.redhat.com/developer-sandbox Try Red Hat's products and technologies without setup or configuration.

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@kevindubois Thank you! @[email protected] youtube.com/@thekevindubois linkedin.com/in/kevindubois github.com/kdubois @kevindubois.com

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@kevindubois Join Red Hat Developer. Build here. Go anywhere. facebook.com/RedHatDeveloper youtube.com/RedHatDevelopers twitter.com/rhdevelopers linkedin.com/showcase/red-hat-developer Thank you!