ce7cb702218693d08ea6d83464d2457c9250027c

vendor/infrastructure/cert-manager/config/issuers.yaml

@@ -0,0 +1,35 @@
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: vault-internal
+spec:
+  vault:
+    path: pki_int/sign/cert-manager
+    server: https://vault-active-tls.vault.svc.cluster.local:443
+    serverName: vault-active-direct.vault.svc.cluster.local
+    caBundleSecretRef:
+      name: vault-root-ca
+      key: ca.crt
+    auth:
+      kubernetes:
+        role: cert-manager
+        mountPath: /v1/auth/kubernetes
+        serviceAccountRef:
+          name: cert-manager
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    email: [email protected]
+    privateKeySecretRef:
+      name: letsencrypt-account-key
+    solvers:
+      - dns01:
+          cloudflare:
+            apiTokenSecretRef:
+              name: cloudflare-api-token
+              key: api-token

vendor/infrastructure/cert-manager/config/kustomization.yaml

@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - vault-root-ca.yaml
+  - vso.yaml
+  - vault-auth.yaml
+  - issuers.yaml

vendor/infrastructure/cert-manager/config/vault-auth.yaml

@@ -0,0 +1,24 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: vault-auth
+  namespace: cert-manager
+rules:
+  - apiGroups: [""]
+    resources: [serviceaccounts/token]
+    resourceNames: [cert-manager]
+    verbs: [create]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: vault-auth
+  namespace: cert-manager
+subjects:
+  - kind: ServiceAccount
+    name: cert-manager
+    namespace: cert-manager
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: vault-auth

vendor/infrastructure/cert-manager/config/vault-root-ca.yaml

@@ -0,0 +1,20 @@
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultDynamicSecret
+metadata:
+  name: vault-root-ca
+  namespace: cert-manager
+spec:
+  vaultAuthRef: kv
+  mount: pki
+  path: cert/ca
+  requestHTTPMethod: GET
+  refreshAfter: 1h
+  destination:
+    create: true
+    overwrite: true
+    name: vault-root-ca
+    transformation:
+      excludeRaw: true
+      templates:
+        ca.crt:
+          text: '{{ get .Secrets "certificate" }}'

vendor/infrastructure/cert-manager/config/vso.yaml

@@ -0,0 +1,31 @@
+---
+# VSO syncs the Cloudflare API token from Vault KV -> cert-manager namespace
+# so the letsencrypt ClusterIssuer can use it for DNS-01 challenges.
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultAuth
+metadata:
+  name: kv
+  namespace: cert-manager
+spec:
+  method: kubernetes
+  mount: kubernetes
+  kubernetes:
+    role: cert-manager-kv
+    serviceAccount: cert-manager
+  vaultConnectionRef: vault/vault
+---
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultStaticSecret
+metadata:
+  name: cloudflare-api-token
+  namespace: cert-manager
+spec:
+  type: kv-v2
+  mount: secret
+  path: cloudflare/cert-manager-dns01
+  destination:
+    name: cloudflare-api-token
+    create: true
+    overwrite: true
+  refreshAfter: 1h
+  vaultAuthRef: kv

vendor/infrastructure/cert-manager/helm-release.yaml

@@ -0,0 +1,45 @@
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  interval: 15m
+  releaseName: cert-manager
+  targetNamespace: cert-manager
+  chart:
+    spec:
+      chart: cert-manager
+      version: v1.21.3
+      sourceRef:
+        kind: HelmRepository
+        name: jetstack-oci
+        namespace: flux-system
+  install:
+    createNamespace: true
+    remediation:
+      retries: 3
+  upgrade:
+    remediation:
+      retries: 3
+  values:
+    crds:
+      enabled: true
+    replicaCount: 2
+    webhook:
+      replicaCount: 2
+      podDisruptionBudget:
+        enabled: true
+    cainjector:
+      replicaCount: 2
+      podDisruptionBudget:
+        enabled: true
+    podDisruptionBudget:
+      enabled: true
+    extraArgs:
+      - --dns01-recursive-nameservers-only
+      - --dns01-recursive-nameservers=1.1.1.1:53,1.0.0.1:53
+    resources:
+      requests:
+        cpu: 10m
+        memory: 32Mi

vendor/infrastructure/cert-manager/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - namespace.yaml
+  - helm-release.yaml
+  - network-policies.yaml

vendor/infrastructure/cert-manager/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: cert-manager

vendor/infrastructure/cert-manager/network-policies.yaml

@@ -0,0 +1,145 @@
+---
+# cert-manager controller: metrics from host (9403), apiserver.
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/component: controller
+  ingress:
+    - fromEntities:
+        - host
+      toPorts:
+        - ports:
+            - port: "9403"
+              protocol: TCP
+  egress:
+    - toEntities:
+        - kube-apiserver
+      toPorts:
+        - ports:
+            - port: "6443"
+              protocol: TCP
+    - toEntities:
+        - world
+      toPorts:
+        - ports:
+            - port: "80"
+              protocol: TCP
+            - port: "443"
+              protocol: TCP
+            - port: "53"
+              protocol: UDP
+            - port: "53"
+              protocol: TCP
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: kube-system
+            k8s-app: kube-dns
+      toPorts:
+        - ports:
+            - port: "53"
+              protocol: UDP
+            - port: "53"
+              protocol: TCP
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: vault
+            app.kubernetes.io/name: vault
+            component: server
+      toPorts:
+        - ports:
+            - port: "8200"
+              protocol: TCP
+---
+# cert-manager webhook: called by kube-apiserver on 6080, also needs apiserver.
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: cert-manager-webhook
+  namespace: cert-manager
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/component: webhook
+  ingress:
+    - fromEntities:
+        - kube-apiserver
+        - host
+        - remote-node
+      toPorts:
+        - ports:
+            - port: "6080"
+              protocol: TCP
+            - port: "10250"
+              protocol: TCP
+  egress:
+    - toEntities:
+        - kube-apiserver
+      toPorts:
+        - ports:
+            - port: "6443"
+              protocol: TCP
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: kube-system
+            k8s-app: kube-dns
+      toPorts:
+        - ports:
+            - port: "53"
+              protocol: UDP
+            - port: "53"
+              protocol: TCP
+---
+# Host egress to cert-manager pods (webhook, metrics).
+apiVersion: cilium.io/v2
+kind: CiliumClusterwideNetworkPolicy
+metadata:
+  name: host-egress-cert-manager
+spec:
+  nodeSelector: {}
+  egress:
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: cert-manager
+      toPorts:
+        - ports:
+            - port: "6080"
+              protocol: TCP
+            - port: "9403"
+              protocol: TCP
+            - port: "10250"
+              protocol: TCP
+
+---
+# cert-manager cainjector: only needs apiserver.
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: cert-manager-cainjector
+  namespace: cert-manager
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/component: cainjector
+  ingress: []
+  egress:
+    - toEntities:
+        - kube-apiserver
+      toPorts:
+        - ports:
+            - port: "6443"
+              protocol: TCP
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: kube-system
+            k8s-app: kube-dns
+      toPorts:
+        - ports:
+            - port: "53"
+              protocol: UDP
+            - port: "53"
+              protocol: TCP