feat(k8s): add istio system

k8s/istio-system/gateway.yaml

@@ -0,0 +1,15 @@
+apiVersion: networking.istio.io/v1beta1
+kind: Gateway
+metadata:
+  name: public-gateway
+  namespace: istio-system
+spec:
+  selector:
+    istio: gateway
+  servers:
+    - port:
+        number: 80
+        name: http
+        protocol: HTTP
+      hosts:
+        - "*"

k8s/istio-system/istio-version.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: istio-version
+  namespace: flux-system
+  annotations:
+    kustomize.toolkit.fluxcd.io/ssa: merge
+data:
+  version: 1.19.3

k8s/istio-system/istio.yaml

@@ -0,0 +1,96 @@
+apiVersion: source.toolkit.fluxcd.io/v1beta1
+kind: HelmRepository
+metadata:
+  name: istio
+  namespace: istio-system
+  labels:
+    app.kubernetes.io/part-of: istio
+spec:
+  interval: 1h0m0s
+  url: https://istio-release.storage.googleapis.com/charts
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: istio-base
+  namespace: istio-system
+  labels:
+    app.kubernetes.io/part-of: istio
+spec:
+  releaseName: istio-base
+  install:
+    crds: Create
+  upgrade:
+    crds: CreateReplace
+  chart:
+    spec:
+      version: "${version}"
+      chart: base
+      sourceRef:
+        kind: HelmRepository
+        name: istio
+  interval: 1h0m0s
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: istiod
+  namespace: istio-system
+  labels:
+    app.kubernetes.io/part-of: istio
+spec:
+  releaseName: istiod
+  dependsOn:
+    - name: istio-base
+  chart:
+    spec:
+      version: "${version}"
+      chart: istiod
+      sourceRef:
+        kind: HelmRepository
+        name: istio
+  interval: 1h0m0s
+  values:
+    global:
+      istioNamespace: istio-system
+      proxy:
+        resources:
+          requests:
+            cpu: 10m
+            memory: 16Mi
+    pilot:
+      autoscaleEnabled: false
+      resources:
+        requests:
+          cpu: 100m
+          memory: 128Mi
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: istio-gateway
+  namespace: istio-system
+  labels:
+    app.kubernetes.io/part-of: istio
+spec:
+  releaseName: istio-gateway
+  dependsOn:
+    - name: istio-base
+    - name: istiod
+  chart:
+    spec:
+      version: "${version}"
+      chart: gateway
+      sourceRef:
+        kind: HelmRepository
+        name: istio
+  interval: 1h0m0s
+  values:
+    autoscaling:
+      enabled: false
+    resources:
+      requests:
+        cpu: 10m
+        memory: 128Mi
+    service:
+      type: "${service:=LoadBalancer}"

k8s/istio-system/kustomization.yaml

@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ./ns.yaml
+- ./istio-version.yaml
+- ./istio.yaml
+- ./gateway.yaml

k8s/istio-system/ns.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: istio-system

k8s/istio-system/sync.yaml

@@ -0,0 +1,17 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1beta2
+kind: Kustomization
+metadata:
+  name: istio-system
+  namespace: flux-system
+spec:
+  interval: 10m0s
+  path: ./k8s/istio-system
+  prune: true
+  wait: true
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  postBuild:
+    substituteFrom:
+      - kind: ConfigMap
+        name: istio-version