Example solution

Jenkinsfile

@@ -38,13 +38,36 @@ pipeline {
                 }
             }
         }
+        stage('CanaryDeploy') {
+            when {
+                branch 'master'
+            }
+            environment { 
+                CANARY_REPLICAS = 1
+            }
+            steps {
+                kubernetesDeploy(
+                    kubeconfigId: 'kubeconfig',
+                    configs: 'train-schedule-kube-canary.yml',
+                    enableConfigSubstitution: true
+                )
+            }
+        }
         stage('DeployToProduction') {
             when {
                 branch 'master'
             }
+            environment { 
+                CANARY_REPLICAS = 0
+            }
             steps {
                 input 'Deploy to Production?'
                 milestone(1)
+                kubernetesDeploy(
+                    kubeconfigId: 'kubeconfig',
+                    configs: 'train-schedule-kube-canary.yml',
+                    enableConfigSubstitution: true
+                )
                 kubernetesDeploy(
                     kubeconfigId: 'kubeconfig',
                     configs: 'train-schedule-kube.yml',

train-schedule-kube-canary.yml

@@ -0,0 +1,49 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: train-schedule-service-canary
+spec:
+  type: NodePort
+  selector:
+    app: train-schedule
+    track: canary
+  ports:
+  - protocol: TCP
+    port: 8080
+    nodePort: 8081
+
+---
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: train-schedule-deployment-canary
+  labels:
+    app: train-schedule
+spec:
+  replicas: $CANARY_REPLICAS
+  selector:
+    matchLabels:
+      app: train-schedule
+      track: canary
+  template:
+    metadata:
+      labels:
+        app: train-schedule
+        track: canary
+    spec:
+      containers:
+      - name: train-schedule
+        image: $DOCKER_IMAGE_NAME:$BUILD_NUMBER
+        ports:
+        - containerPort: 8080
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 8080
+          initialDelaySeconds: 15
+          timeoutSeconds: 1
+          periodSeconds: 10
+        resources:
+          requests:
+            cpu: 200m