Add basic functionality for hetzner wildcard certificates

This commit is contained in:
Dennis Schmalacker
2020-05-28 17:11:45 +02:00
parent 51552df7e2
commit a9e521d3ec
16 changed files with 249 additions and 31 deletions
@@ -1,48 +0,0 @@
{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "example-webhook.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "example-webhook.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Create chart name and version as used by the chart label.
*/}}
{{- define "example-webhook.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- define "example-webhook.selfSignedIssuer" -}}
{{ printf "%s-selfsign" (include "example-webhook.fullname" .) }}
{{- end -}}
{{- define "example-webhook.rootCAIssuer" -}}
{{ printf "%s-ca" (include "example-webhook.fullname" .) }}
{{- end -}}
{{- define "example-webhook.rootCACertificate" -}}
{{ printf "%s-ca" (include "example-webhook.fullname" .) }}
{{- end -}}
{{- define "example-webhook.servingCertificate" -}}
{{ printf "%s-webhook-tls" (include "example-webhook.fullname" .) }}
{{- end -}}
@@ -1,19 +0,0 @@
apiVersion: apiregistration.k8s.io/v1beta1
kind: APIService
metadata:
name: v1alpha1.{{ .Values.groupName }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
annotations:
certmanager.k8s.io/inject-ca-from: "{{ .Release.Namespace }}/{{ include "example-webhook.servingCertificate" . }}"
spec:
group: {{ .Values.groupName }}
groupPriorityMinimum: 1000
versionPriority: 15
service:
name: {{ include "example-webhook.fullname" . }}
namespace: {{ .Release.Namespace }}
version: v1alpha1
@@ -1,68 +0,0 @@
apiVersion: apps/v1beta2
kind: Deployment
metadata:
name: {{ include "example-webhook.fullname" . }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
replicas: {{ .Values.replicaCount }}
selector:
matchLabels:
app: {{ include "example-webhook.name" . }}
release: {{ .Release.Name }}
template:
metadata:
labels:
app: {{ include "example-webhook.name" . }}
release: {{ .Release.Name }}
spec:
serviceAccountName: {{ include "example-webhook.fullname" . }}
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
args:
- --tls-cert-file=/tls/tls.crt
- --tls-private-key-file=/tls/tls.key
env:
- name: GROUP_NAME
value: {{ .Values.groupName | quote }}
ports:
- name: https
containerPort: 443
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTPS
path: /healthz
port: https
readinessProbe:
httpGet:
scheme: HTTPS
path: /healthz
port: https
volumeMounts:
- name: certs
mountPath: /tls
readOnly: true
resources:
{{ toYaml .Values.resources | indent 12 }}
volumes:
- name: certs
secret:
secretName: {{ include "example-webhook.servingCertificate" . }}
{{- with .Values.nodeSelector }}
nodeSelector:
{{ toYaml . | indent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{ toYaml . | indent 8 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{ toYaml . | indent 8 }}
{{- end }}
-76
View File
@@ -1,76 +0,0 @@
---
# Create a selfsigned Issuer, in order to create a root CA certificate for
# signing webhook serving certificates
apiVersion: certmanager.k8s.io/v1alpha1
kind: Issuer
metadata:
name: {{ include "example-webhook.selfSignedIssuer" . }}
namespace: {{ .Release.Namespace | quote }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
selfSigned: {}
---
# Generate a CA Certificate used to sign certificates for the webhook
apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
name: {{ include "example-webhook.rootCACertificate" . }}
namespace: {{ .Release.Namespace | quote }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
secretName: {{ include "example-webhook.rootCACertificate" . }}
duration: 43800h # 5y
issuerRef:
name: {{ include "example-webhook.selfSignedIssuer" . }}
commonName: "ca.example-webhook.cert-manager"
isCA: true
---
# Create an Issuer that uses the above generated CA certificate to issue certs
apiVersion: certmanager.k8s.io/v1alpha1
kind: Issuer
metadata:
name: {{ include "example-webhook.rootCAIssuer" . }}
namespace: {{ .Release.Namespace | quote }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
ca:
secretName: {{ include "example-webhook.rootCACertificate" . }}
---
# Finally, generate a serving certificate for the webhook to use
apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
name: {{ include "example-webhook.servingCertificate" . }}
namespace: {{ .Release.Namespace | quote }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
secretName: {{ include "example-webhook.servingCertificate" . }}
duration: 8760h # 1y
issuerRef:
name: {{ include "example-webhook.rootCAIssuer" . }}
dnsNames:
- {{ include "example-webhook.fullname" . }}
- {{ include "example-webhook.fullname" . }}.{{ .Release.Namespace }}
- {{ include "example-webhook.fullname" . }}.{{ .Release.Namespace }}.svc
@@ -1,90 +0,0 @@
apiVersion: v1
kind: ServiceAccount
metadata:
name: {{ include "example-webhook.fullname" . }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
---
# 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/v1beta1
kind: RoleBinding
metadata:
name: {{ include "example-webhook.fullname" . }}:webhook-authentication-reader
namespace: kube-system
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: extension-apiserver-authentication-reader
subjects:
- apiGroup: ""
kind: ServiceAccount
name: {{ include "example-webhook.fullname" . }}
namespace: {{ .Release.Namespace }}
---
# apiserver gets the auth-delegator role to delegate auth decisions to
# the core apiserver
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: {{ include "example-webhook.fullname" . }}:auth-delegator
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:auth-delegator
subjects:
- apiGroup: ""
kind: ServiceAccount
name: {{ include "example-webhook.fullname" . }}
namespace: {{ .Release.Namespace }}
---
# Grant cert-manager permission to validate using our apiserver
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
name: {{ include "example-webhook.fullname" . }}:domain-solver
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
rules:
- apiGroups:
- {{ .Values.groupName }}
resources:
- '*'
verbs:
- 'create'
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: {{ include "example-webhook.fullname" . }}:domain-solver
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: {{ include "example-webhook.fullname" . }}:domain-solver
subjects:
- apiGroup: ""
kind: ServiceAccount
name: {{ .Values.certManager.serviceAccountName }}
namespace: {{ .Values.certManager.namespace }}
@@ -1,19 +0,0 @@
apiVersion: v1
kind: Service
metadata:
name: {{ include "example-webhook.fullname" . }}
labels:
app: {{ include "example-webhook.name" . }}
chart: {{ include "example-webhook.chart" . }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
spec:
type: {{ .Values.service.type }}
ports:
- port: {{ .Values.service.port }}
targetPort: https
protocol: TCP
name: https
selector:
app: {{ include "example-webhook.name" . }}
release: {{ .Release.Name }}