Initial scaffold: Go service, Helm chart, Kustomize overlays

k8s/base/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+helmCharts:
+  - name: hello-svc
+    releaseName: hello-svc
+    localChartPath: ../../helm/hello-svc
+    valuesFile: values.yaml

k8s/base/values.yaml

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+# Base Helm values — overlays patch on top of this via strategic merge.
+replicaCount: 1
+
+image:
+  repository: git.samidare.dev/rod/hello-svc
+  pullPolicy: Always
+  tag: "latest"
+
+env:
+  APP_ENV: production
+  LOG_LEVEL: info
+  APP_VERSION: unknown
+
+resources:
+  requests:
+    cpu: 100m
+    memory: 64Mi
+  limits:
+    cpu: 500m
+    memory: 128Mi
+
+serviceMonitor:
+  enabled: true
+  interval: 30s

k8s/overlays/dev/deployment-patch.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hello-svc
+spec:
+  replicas: 1
+  template:
+    spec:
+      containers:
+        - name: hello-svc
+          env:
+            - name: APP_ENV
+              value: dev
+            - name: LOG_LEVEL
+              value: debug
+          resources:
+            requests:
+              cpu: 50m
+              memory: 32Mi
+            limits:
+              cpu: 100m
+              memory: 64Mi

k8s/overlays/dev/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: dev
+
+resources:
+  - ../../base
+  - namespace.yaml
+
+patches:
+  - path: deployment-patch.yaml

k8s/overlays/dev/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: dev

k8s/overlays/prod/deployment-patch.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hello-svc
+spec:
+  replicas: 3
+  template:
+    spec:
+      containers:
+        - name: hello-svc
+          env:
+            - name: APP_ENV
+              value: prod
+            - name: LOG_LEVEL
+              value: info
+          resources:
+            requests:
+              cpu: 100m
+              memory: 64Mi
+            limits:
+              cpu: 500m
+              memory: 128Mi

k8s/overlays/prod/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: prod
+
+resources:
+  - ../../base
+  - namespace.yaml
+
+patches:
+  - path: deployment-patch.yaml

k8s/overlays/prod/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: prod