docs: add blog post for multi-stage delivery

.github/actions/spelling/expect.txt

@@ -40,6 +40,7 @@ appcreationrequest
 APPNAME
 appv
 appversion
+applicationdeployment
 aquasecurity
 architecting
 ARCHS
@@ -205,6 +206,7 @@ ghtoken
 ginkgotypes
 giscus
 Gitlab
+gitops
 gke
 glasskube
 gms
@@ -387,6 +389,7 @@ linenums
 linkedin
 linkedtrace
 livenessprobe
+loadtests
 LOCALBIN
 logf
 logr

docs/blog/posts/multi-stage-delivery-using-gitops/argo-apps.yaml

@@ -0,0 +1,49 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: simple-go-app-context
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: 'https://github.com/bacherfl/keptn-analysis-demo'
+    path: simple-app/chart-dev
+    targetRevision: HEAD
+    helm:
+      parameters:
+        - name: "commitID"
+          value: "$ARGOCD_APP_REVISION"
+  destination:
+    server: 'https://kubernetes.default.svc'
+    namespace: simple-go
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: simple-go-app-context-prod
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: 'https://github.com/bacherfl/keptn-analysis-demo'
+    path: simple-app/chart-prod
+    targetRevision: HEAD
+    helm:
+      parameters:
+        - name: "commitID"
+          value: "$ARGOCD_APP_REVISION"
+  destination:
+    server: 'https://kubernetes.default.svc'
+    namespace: simple-go
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

docs/blog/posts/multi-stage-delivery-using-gitops/deployment.yaml

@@ -0,0 +1,26 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: simple-go-service
+  namespace: simple-go
+spec:
+  selector:
+    matchLabels:
+      app: simple-go-service
+  template:
+    metadata:
+      labels:
+        app: simple-go-service
+        app.kubernetes.io/name: simple-go-service
+        app.kubernetes.io/part-of: simple-go
+        app.kubernetes.io/version: {{.Values.serviceVersion}}
+        keptn.sh/post-deployment-tasks: wait-for-monitoring
+    spec:
+      containers:
+        - image: bacherfl/simple-go-service:{{.Values.serviceVersion}}
+          imagePullPolicy: Always
+          name: simple-go-service
+          ports:
+            - containerPort: 9000
+              name: http
+              protocol: TCP

docs/blog/posts/multi-stage-delivery-using-gitops/keptnappcontext-prod.yaml

@@ -0,0 +1,16 @@
+apiVersion: lifecycle.keptn.sh/v1beta1
+kind: KeptnAppContext
+metadata:
+  name: simple-go-prod
+  namespace: simple-go-prod
+spec:
+
+  preDeploymentTasks:
+    - wait-for-prometheus
+  postDeploymentTasks:
+    - post-deployment-loadtests
+    - post-deployment-loadtests-backend
+  spanLinks:
+    - {{.Values.traceParent}}
+  metadata:
+    commitID: {{.Values.commitID}}

docs/blog/posts/multi-stage-delivery-using-gitops/keptnappcontext.yaml

@@ -0,0 +1,17 @@
+apiVersion: lifecycle.keptn.sh/v1beta1
+kind: KeptnAppContext
+metadata:
+  name: simple-go
+  namespace: simple-go
+spec:
+  preDeploymentTasks:
+    - wait-for-prometheus
+  postDeploymentTasks:
+    - post-deployment-loadtests
+    - post-deployment-loadtests-backend
+  postDeploymentEvaluations:
+    - response-time
+  promotionTasks:
+    - promote
+  metadata:
+    commitID: {{.Values.commitID}}

docs/blog/posts/multi-stage-delivery-using-gitops/promote.yaml

@@ -0,0 +1,46 @@
+name: promote
+
+on:
+  workflow_dispatch:
+    inputs:
+      traceParent:
+        description: 'OTEL parent trace'
+        required: false
+        type: string
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  promote:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: |
+          # configure git client
+          git config --global user.email "<email address>"
+          git config --global user.name "<name>"
+
+          # create a new branch
+          git switch -c production/${{ github.sha }}
+
+          # promote the change
+          cp dev/values.yaml production/values.yaml
+
+          echo "traceParent: $TRACE_PARENT" >> production/values.yaml
+
+          # push the change to the new branch
+          git add production/values.yaml
+          git commit -m "Promote dev to production"
+          git push -u origin production/${{ github.sha }}
+        env:
+          TRACE_PARENT: ${{ inputs.traceParent }}
+      - run: |
+          gh pr create \
+            -B main \
+            -H production/${{ github.sha }} \
+            --title "Promote dev to production" \
+            --body "Automatically created by GHA"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

docs/blog/posts/multi-stage-delivery-using-gitops/values-dev.yaml

@@ -0,0 +1,4 @@
+serviceVersion: v1
+backendServiceVersion: v1
+targetResponseTime: "0.50"
+commitID: ""

docs/blog/posts/multi-stage-delivery-using-gitops/values-prod.yaml

@@ -0,0 +1,5 @@
+serviceVersion: v1
+backendServiceVersion: v1
+targetResponseRate: "0.50"
+commitID: ""
+traceParent: ""