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add kubernetes setup
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‎README.md

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@@ -76,3 +76,37 @@ To simulate the migration yourself, follow these steps:
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If all goes well, you should see the migration complete without any issues.
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![telemetry](./public/img/telemetry.png)
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## Kubernetes
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To run the ToggleShop in a Kind cluster:
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Create the cluster with the supplied definition:
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```sh
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kind create cluster --config kubernetes/cluster.yaml
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```
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Install cert manager in the cluster (required for the OpenFeature operator):
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```sh
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kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.13.2/cert-manager.yaml && kubectl wait --timeout=60s --for condition=Available=True deploy --all -n 'cert-manager'
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```
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Install the nginx controller:
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```sh
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kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/kind/deploy.yaml && kubectl wait --timeout=60s --for condition=Available=True deploy --all -n 'ingress-nginx'
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```
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Install the OpenFeature operator:
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```sh
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helm repo add openfeature https://open-feature.github.io/open-feature-operator/ && helm repo update && helm upgrade --install open-feature-operator openfeature/open-feature-operator
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```
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Deploy the ToggleShop and supporting infrastructure:
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```sh
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kubectl -n default apply -f kubernetes/toggle-shop.yaml && kubectl wait --timeout=60s deployment --for condition=Available=True -l 'app=toggle-shop' -n 'default'
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```

‎kubernetes/cluster.yaml

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apiVersion: kind.x-k8s.io/v1alpha4
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kind: Cluster
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nodes:
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- role: control-plane
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kubeadmConfigPatches:
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- |
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kind: InitConfiguration
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nodeRegistration:
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kubeletExtraArgs:
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node-labels: "ingress-ready=true"
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extraPortMappings:
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- containerPort: 80
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hostPort: 80
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protocol: TCP
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- role: worker
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- role: worker
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- role: worker

‎kubernetes/toggle-shop.yaml

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# Flags for our UI
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apiVersion: core.openfeature.dev/v1beta1
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kind: FeatureFlag
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metadata:
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name: ui-flags
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labels:
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app: toggle-shop
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spec:
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flagSpec:
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flags:
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offer-free-shipping:
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state: ENABLED
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variants:
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'on': true
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'off': false
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defaultVariant: 'on'
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---
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# Flags for our backend application
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apiVersion: core.openfeature.dev/v1beta1
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kind: FeatureFlag
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metadata:
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name: app-flags
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labels:
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app: toggle-shop
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spec:
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flagSpec:
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flags:
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use-distributed-db:
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state: ENABLED
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variants:
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'on': true
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'off': false
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defaultVariant: 'off'
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use-secure-protocol:
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state: ENABLED
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variants:
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'on': true
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'off': false
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defaultVariant: 'off'
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---
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# Feature flag source custom resource, configuring flagd to source flags from FeatureFlag CRDs
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apiVersion: core.openfeature.dev/v1beta1
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kind: FeatureFlagSource
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metadata:
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name: ui-flag-source
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labels:
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app: toggle-shop
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spec:
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sources:
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- source: ui-flags
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provider: kubernetes
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---
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# Feature flag source custom resource, configuring flagd to source flags from FeatureFlag CRDs
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apiVersion: core.openfeature.dev/v1beta1
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kind: FeatureFlagSource
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metadata:
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name: app-flag-source
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labels:
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app: toggle-shop
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spec:
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sources:
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- source: app-flags
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provider: kubernetes
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---
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# Standalone flagd for serving UI
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apiVersion: core.openfeature.dev/v1beta1
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kind: Flagd
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metadata:
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name: flagd-ui
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spec:
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replicas: 1
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serviceAccountName: default
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featureFlagSource: ui-flag-source
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ingress:
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enabled: true
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annotations:
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nginx.ingress.kubernetes.io/use-regex: 'true'
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nginx.ingress.kubernetes.io/rewrite-target: /ofrep/$1
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nginx.ingress.kubernetes.io/force-ssl-redirect: 'false'
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hosts:
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- localhost
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- ''
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ingressClassName: nginx
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pathType: ImplementationSpecific
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ofrepPath: /api/ofrep/(.*)
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---
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# Standalone flagd for serving in-process provider
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apiVersion: core.openfeature.dev/v1beta1
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kind: Flagd
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metadata:
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name: flagd-in-process
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spec:
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replicas: 1
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serviceType: ClusterIP
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serviceAccountName: default
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featureFlagSource: app-flag-source
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---
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# In-process provider configuration
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apiVersion: core.openfeature.dev/v1beta1
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kind: InProcessConfiguration
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metadata:
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name: in-process-config
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spec:
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host: flagd-in-process
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---
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# Deployment of a demo-app using our custom resources
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: toggle-shop-deployment
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labels:
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app: toggle-shop
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: toggle-shop
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template:
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metadata:
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labels:
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app: toggle-shop
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annotations:
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openfeature.dev/enabled: 'true'
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openfeature.dev/inprocessconfiguration: 'in-process-config'
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spec:
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containers:
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- name: toggle-shop
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image: ghcr.io/open-feature/toggle-shop:main # x-release-please-version
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ports:
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- containerPort: 3000
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name: demo-port
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env:
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- name: FLAGD_HOST
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value: flagd-in-process
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---
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# Service to expose our application
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apiVersion: v1
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kind: Service
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metadata:
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name: toggle-shop-app-service
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labels:
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app: toggle-shop
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spec:
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type: NodePort
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selector:
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app: toggle-shop
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ports:
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- port: 3000
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targetPort: demo-port
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nodePort: 30000
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---
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# Ingress for our application
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: toggle-shop-ingress
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spec:
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ingressClassName: nginx
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rules:
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- host: localhost
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http:
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paths:
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- pathType: Prefix
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path: /
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backend:
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service:
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name: toggle-shop-app-service
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port:
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number: 3000

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