Initial commit - working through the Flux D1 reference architecture@

README.md

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+Repo for storing the home lab's K8s GitOps setup. WIP...

components/admission/config/base/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - sync-configmaps.yaml
+  - sync-git-token.yaml

components/admission/config/base/sync-configmaps.yaml

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+apiVersion: kyverno.io/v1
+kind: ClusterPolicy
+metadata:
+  name: sync-flux-configmaps
+  annotations:
+    kustomize.toolkit.fluxcd.io/force: "Enabled"
+spec:
+  validationFailureAction: Enforce
+  background: false
+  generateExisting: true
+  rules:
+    # This rule ensures that all namespaces
+    # have a copy of the flux-runtime-info configmap from the flux-system namespace.
+    - name: sync-configmaps
+      match:
+        any:
+          - resources:
+              kinds:
+                - v1/Namespace
+      generate:
+        namespace: "{{request.object.metadata.name}}"
+        synchronize: true
+        cloneList:
+          namespace: flux-system
+          kinds:
+            - v1/ConfigMap
+          selector:
+            matchLabels:
+              toolkit.fluxcd.io/runtime: "true"

components/admission/config/base/sync-git-token.yaml

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+apiVersion: kyverno.io/v1
+kind: ClusterPolicy
+metadata:
+  name: sync-git-token
+spec:
+  mutateExistingOnPolicyUpdate: true
+  rules:
+    - name: copy-token-from-password
+      match:
+        any:
+          - resources:
+              kinds:
+                - Secret
+              names:
+                - flux-system
+              namespaces:
+                - flux-system
+      mutate:
+        targets:
+          - apiVersion: v1
+            kind: Secret
+            name: flux-system
+            namespace: flux-system
+        patchesJson6902: |-
+          - op: add
+            path: "/data/token"
+            value: "{{ request.object.data.password }}" 

components/admission/controllers/base/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - namespace.yaml
+  - rbac.yaml
+  - kyverno.yaml

components/admission/controllers/base/kyverno.yaml

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+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: kyverno
+  namespace: kyverno
+spec:
+  interval: 12h
+  type: oci
+  url: oci://ghcr.io/kyverno/charts
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: kyverno
+  namespace: kyverno
+spec:
+  serviceAccountName: flux
+  interval: 1h
+  chart:
+    spec:
+      version: "3.6.0" # {"$imagepolicy": "flux-system:kyverno:tag"}
+      chart: kyverno
+      sourceRef:
+        kind: HelmRepository
+        name: kyverno
+      interval: 12h
+  install:
+    crds: Create
+    timeout: 9m
+  upgrade:
+    crds: CreateReplace
+    timeout: 9m
+  values:
+    admissionController:
+      serviceMonitor:
+        enabled: true
+      rbac:
+        clusterRole:
+          extraResources:
+          - apiGroups: [""]
+            resources: [secrets]
+            verbs: [get, list]
+    backgroundController:
+      serviceMonitor:
+        enabled: true
+      rbac:
+        clusterRole:
+          extraResources:
+          - apiGroups: [""]
+            resources: [secrets]
+            verbs: [get, list, create, update, delete]

components/admission/controllers/base/namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: kyverno
+  labels:
+    app.kubernetes.io/component: admission
+    toolkit.fluxcd.io/tenant: platform-team
+    pod-security.kubernetes.io/enforce: baseline

components/admission/controllers/base/rbac.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/component: admission
+    toolkit.fluxcd.io/tenant: platform-team
+  name: flux-admission
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cluster-admin
+subjects:
+  - kind: ServiceAccount
+    name: flux
+    namespace: kyverno
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: flux
+  namespace: kyverno
+  labels:
+    app.kubernetes.io/component: admission
+    toolkit.fluxcd.io/tenant: platform-team

components/admission/controllers/dev-amd64/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../base

components/admission/controllers/dev-arm64/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../base

update/automation.yaml

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+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImageUpdateAutomation
+metadata:
+  name: flux-infra
+spec:
+  interval: 30m
+  sourceRef:
+    kind: GitRepository
+    name: flux-infra
+  git:
+    checkout:
+      ref:
+        branch: ${GIT_BRANCH}
+    commit:
+      author:
+        email: home-lab-fluxcd-bot@users.noreply.home.lab
+        name: home-lab-fluxcd-bot
+      messageTemplate: |
+        Automated image update
+
+        Files:
+        {{ range $filename, $_ := .Changed.FileChanges -}}
+        - {{ $filename }}
+        {{ end -}}
+
+        Objects:
+        {{ range $resource, $changes := .Changed.Objects -}}
+        - {{ $resource.Kind }} {{ $resource.Name }}
+          Changes:
+        {{- range $_, $change := $changes }}
+            - {{ $change.OldValue }} -> {{ $change.NewValue }}
+        {{ end -}}
+        {{ end -}}
+    push:
+      branch: ${GIT_BRANCH}
+  update:
+    path: "./components"
+    strategy: Setters

update/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: flux-system
+resources:
+  - sync.yaml
+  - automation.yaml
+labels:
+  - pairs:
+      toolkit.fluxcd.io/tenant: infra
+      toolkit.fluxcd.io/role: automation

update/sync.yaml

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+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: flux-infra-update-policies
+spec:
+  serviceAccountName: flux-infra
+  interval: 12h
+  retryInterval: 3m
+  path: ./update
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: flux-infra