Adding DNSimple cert-manager dns01 webhook.

kubernetes/apps/cert-manager/kustomization.yaml

@@ -7,3 +7,4 @@ resources:
   - ./namespace.yaml
   # Flux-Kustomizations
   - ./cert-manager/ks.yaml
+  - ./webhook-dnsimple/ks.yaml

kubernetes/apps/cert-manager/webhook-dnsimple/app/apiservice.yaml

@@ -0,0 +1,16 @@
+apiVersion: apiregistration.k8s.io/v1
+kind: APIService
+metadata:
+  name: v1alpha1.acme.hsn.dev
+  labels:
+    app: cert-manager-webhook-dnsimple
+  annotations:
+    cert-manager.io/inject-ca-from: "cert-manager/webhook-dnsimple-webhook-tls"
+spec:
+  group: acme.hsn.dev
+  groupPriorityMinimum: 1000
+  versionPriority: 15
+  service:
+    name: webhook-dnsimple
+    namespace: cert-manager
+  version: v1alpha1

kubernetes/apps/cert-manager/webhook-dnsimple/app/helmrelease.yaml

@@ -0,0 +1,59 @@
+---
+# yaml-language-server: $schema=https://raw.githubusercontent.com/bjw-s/helm-charts/main/charts/other/app-template/schemas/helmrelease-helm-v2beta2.schema.json
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: webhook-dnsimple
+spec:
+  chart:
+    spec:
+      chart: app-template
+      version: 3.0.4
+      interval: 30m
+      sourceRef:
+        kind: HelmRepository
+        name: bjw-s
+        namespace: flux-system
+  interval: 30m
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    cleanupOnFail: true
+    remediation:
+      retries: 3
+      strategy: rollback
+  values:
+    controllers:
+      webhook-dnsimple:
+        strategy: RollingUpdate
+        annotations:
+          reloader.stakater.com/auto: "true"
+        containers:
+          app:
+            image:
+              repository: git.hsn.dev/jahanson/cert-manager-webhook-dnsimple
+              tag: v0.0.1
+            args:
+              - --secure-port=8443
+              - --tls-cert-file=/tls/tls.crt
+              - --tls-private-key-file=/tls/tls.key
+            env:
+              - name: GROUP_NAME
+                value: "acme.hsn.dev"
+            resources:
+              requests:
+                cpu: 23m
+                memory: 249M
+            probes:
+              liveness:
+                enabled: true
+              readiness:
+                enabled: true
+    persistence:
+      certs:
+        type: secret
+        name: webhook-dnsimple-webhook-tls
+        globalMounts:
+          - path: /tls
+            readOnly: true

kubernetes/apps/cert-manager/webhook-dnsimple/app/kustomization.yaml

@@ -0,0 +1,9 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization.json
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: cert-manager
+resources:
+  - ./apiservice.yaml
+  - ./helmrelease.yaml
+  - ./pki.yaml

kubernetes/apps/cert-manager/webhook-dnsimple/app/pki.yaml

@@ -0,0 +1,62 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/cert-manager.io/issuer_v1.json
+# Create a selfsigned Issuer, in order to create a root CA certificate for
+# signing webhook serving certificates
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: webhook-dnsimple-selfsign
+  namespace: "cert-manager"
+  labels:
+    app: cert-manager-webhook-dnsimple
+spec:
+  selfSigned: {}
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/cert-manager.io/issuer_v1.json
+# Create an Issuer that uses the above generated CA certificate to issue certs
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: webhook-dnsimple-ca
+  namespace: "cert-manager"
+  labels:
+    app: cert-manager-webhook-dnsimple
+spec:
+  ca:
+    secretName: webhook-dnsimple-ca
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/cert-manager.io/certificate_v1.json
+# Generate a CA Certificate used to sign certificates for the webhook
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: webhook-dnsimple-ca
+  namespace: "cert-manager"
+  labels:
+    app: cert-manager-webhook-dnsimple
+spec:
+  secretName: webhook-dnsimple-ca
+  duration: 43800h # 5y
+  issuerRef:
+    name: webhook-dnsimple-selfsign
+  commonName: "ca.dnsimple-webhook.cert-manager"
+  isCA: true
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/cert-manager.io/certificate_v1.json
+# Finally, generate a serving certificate for the webhook to use
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: webhook-dnsimple-webhook-tls
+  namespace: "cert-manager"
+  labels:
+    app: cert-manager-webhook-dnsimple
+spec:
+  secretName: webhook-dnsimple-webhook-tls
+  duration: 8760h # 1y
+  issuerRef:
+    name: webhook-dnsimple-ca
+  dnsNames:
+  - webhook-dnsimple
+  - webhook-dnsimple.cert-manager
+  - webhook-dnsimple.cert-manager.svc

kubernetes/apps/cert-manager/webhook-dnsimple/app/rbac.yaml

@@ -0,0 +1,101 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: webhook-dnsimple
+  namespace: "cert-manager"
+  labels:
+    app: cert-manager-webhook-dnsimple
+---
+# Grant cert-manager permission to validate using our apiserver
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: webhook-dnsimple:domain-solver
+  labels:
+    app: cert-manager-webhook-dnsimple
+rules:
+  - apiGroups:
+      - acme.hsn.dev
+    resources:
+      - '*'
+    verbs:
+      - 'create'
+---
+# apiserver gets the auth-delegator role to delegate auth decisions to the core apiserver
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: webhook-dnsimple:auth-delegator
+  labels:
+    app: cert-manager-webhook-dnsimple
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+  - apiGroup: ""
+    kind: ServiceAccount
+    name: webhook-dnsimple
+    namespace: cert-manager
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: webhook-dnsimple:domain-solver
+  labels:
+    app: cert-manager-webhook-dnsimple
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: webhook-dnsimple:domain-solver
+subjects:
+  - apiGroup: ""
+    kind: ServiceAccount
+    name: cert-manager
+    namespace: cert-manager
+---
+# Grant the webhook permission to read the api-token Secret in the specified namespace.
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+ namespace: "cert-manager"
+ name: webhook-dnsimple:access-secret
+rules:
+- apiGroups: [""]
+  resources: ["secrets"]
+  verbs: ["get", "watch"]
+---
+kind: RoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+ name: webhook-dnsimple:access-secret
+ namespace: "cert-manager"
+subjects:
+- kind: ServiceAccount
+  name: webhook-dnsimple
+  namespace: "cert-manager"
+roleRef:
+ kind: Role
+ name: webhook-dnsimple:access-secret
+ apiGroup: rbac.authorization.k8s.io
+---
+# Grant the webhook permission to read the ConfigMap containing the Kubernetes
+# apiserver's requestheader-ca-certificate.
+# This ConfigMap is automatically created by the Kubernetes apiserver.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: webhook-dnsimple:webhook-authentication-reader
+  namespace: kube-system
+  labels:
+    app: cert-manager-webhook-dnsimple
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+  - apiGroup: ""
+    kind: ServiceAccount
+    name: webhook-dnsimple
+    namespace: cert-manager

kubernetes/apps/cert-manager/webhook-dnsimple/ks.yaml

@@ -0,0 +1,15 @@
+---
+# yaml-language-server: $schema=https://raw.githubusercontent.com/fluxcd-community/flux2-schemas/main/kustomization-kustomize-v1.json
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: cert-manager-webhook-dnsimple
+  namespace: flux-system
+spec:
+  interval: 10m
+  path: "./kubernetes/apps/cert-manager/webhook-dnsimple/app"
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: homelab
+  wait: true