Add helm charts for 'dex' and 'dex-k8s-authenticator', add README, ge…

…t Docker to ignore the charts folder

.dockerignore

@@ -1 +1,2 @@
-*~
+charts
+examples

.gitignore

@@ -1 +1,3 @@
 *~
+bin
+vendor

charts/README.md

@@ -0,0 +1,32 @@
+# Helm charts for installing `dex` with `dex-k8s-authenticator`
+
+The charts in this folder install [`dex`](https://github.com/coreos/dex) 
+with [`dex-k8s-authenticator`](https://github.com/mintel/dex-k8s-authenticator)
+
+`dex-k8s-authenticator` is a helper application for `dex`. `dex` lets you use external 
+Identify Providers (like Google, Microsoft, GitHUb, LDAP) to authenticate access to Kubernetes cluster
+(e.g. for `kubectl`). This helper makes it easy to provide a web UI for one or more clusters.
+It give uses the information and commands to configure `kubectl` to work with the credentials `dex` provides.
+
+Each install of `dex` and/or `dex-k8s-authenticator` can support multiple Kubernetes clusters.
+So you can install one of each for all your clusters, one in each cluster, or any combination.
+
+```
+git clone [email protected]:mintel/dex-k8s-authenticator.git
+helm inspect values charts/dex > dex.yaml
+helm inspect values charts/dex-k8s-authenticator > dex-k8s-authenticator.yaml
+```
+Edit the values files for your environment and requirements (`dex.yaml` and `dex-k8s-authenticator.yaml`). 
+
+Create the DNS names for your `dex` (e.g. 'dex.example.com') and `dex-k8s-authenticator` (e.g. 'login.example.com')
+pointed at the ingress controller you are using. Be sure to enable HTTPS. You can install 
+[`cert-manager`](https://github.com/jetstack/cert-manager) to automatically issue Lets Encrypt certificates.
+
+You also need to configure each Kubernetes cluster to use `dex` at e.g. 'dex.example.com' by [setting the OIDC parameters
+for the Kubernetes API server](https://kubernetes.io/docs/admin/authentication/#openid-connect-tokens). 
+This is easy using [`kube-aws` installer](https://github.com/kubernetes-incubator/kube-aws/tree/master/contrib/dex).
+
+```
+helm install --namespace dex --values dex.yaml charts/dex
+helm install --namespace dex --values dex-k8s-authenticator charts/dex-k8s-authenticator
+```

charts/dex-k8s-authenticator/.helmignore

@@ -0,0 +1,21 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

charts/dex-k8s-authenticator/Chart.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "0.1"
+description: "Authenticator for using Dex with Kubernetes"
+name: dex-k8s-authenticator
+version: 0.1.0

charts/dex-k8s-authenticator/README.md

@@ -0,0 +1,76 @@
+# Helm chart for dex-k8s-authenticator
+
+This chart installs [`dex-k8s-authenticator`](https://github.com/mintel/dex-k8s-authenticator) in a Kubernetes cluster. 
+`dex-k8s-authenticator` is a helper application for [`dex`](https://github.com/coreos/dex). `dex` lets you use external 
+Identify Providers (like Google, Microsoft, GitHUb, LDAP) to authenticate access to Kubernetes cluster
+(e.g. for `kubectl`). This helper makes it easy to provide a web UI for one or more clusters.
+It give uses the information and commands to configure `kubectl` to work with the credentials `dex` provides.
+
+You can configure one or more clusters in this chart configuration, for the one or more `dex` installs you may have.
+
+```
+# Default values for dex-k8s-authenticator.
+
+# Deploy environment label, e.g. dev, test, prod
+global:
+  deployEnv: dev
+
+replicaCount: 1
+
+image:
+  repository: 212381861325.dkr.ecr.ap-southeast-2.amazonaws.com/kube/dex-k8s-authenticator
+  tag: latest
+  pullPolicy: Always
+
+dexK8sAuthenticator:
+  port: 5555
+  debug: false
+  #logoUrl: http://<path-to-your-logo.png>
+  #tlsCert: /path/to/dex-client.crt
+  #tlsKey: /path/to/dex-client.key
+  clusters:
+  - name: my-cluster
+    short_description: "My Cluster"
+    description: "Example Cluster Long Description..."
+    client_secret: ZXhhbXBsZS1hcHAtc2VjcmV0
+    issuer: https://dex.example.com
+    k8s_master_uri: https://my-cluster.example.com
+    client_id: my-cluster
+    redirect_uri: https://login.example.com/callback/my-cluster
+    k8s_ca_uri: https://url-to-your-ca.crt
+
+service:
+  type: ClusterIP
+  port: 5555
+
+ingress:
+  enabled: false
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  path: /
+  hosts:
+    - chart-example.local
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #  cpu: 100m
+  #  memory: 128Mi
+  # requests:
+  #  cpu: 100m
+  #  memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+```

charts/dex-k8s-authenticator/templates/NOTES.txt

@@ -0,0 +1,19 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range .Values.ingress.hosts }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ . }}{{ $.Values.ingress.path }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "dex-k8s-authenticator.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get svc -w {{ template "dex-k8s-authenticator.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "dex-k8s-authenticator.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "dex-k8s-authenticator.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl port-forward $POD_NAME 8080:80
+{{- end }}

charts/dex-k8s-authenticator/templates/_helpers.tpl

@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "dex-k8s-authenticator.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 "dex-k8s-authenticator.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 "dex-k8s-authenticator.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

charts/dex-k8s-authenticator/templates/configmap.yaml

@@ -0,0 +1,26 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "dex-k8s-authenticator.fullname" . }}
+  labels:
+    app: {{ template "dex-k8s-authenticator.fullname" . }}
+    env: {{ default "dev" .Values.global.deployEnv }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+data:
+  config.yaml: |-
+    {{- with .Values.dexK8sAuthenticator }}
+    listen: http://0.0.0.0:{{ default "5555" .port }}
+    debug: {{ default "false" .debug }}
+    {{- if .logoUrl }}
+    logo_uri: {{ .logoUrl }}
+    {{- end }}
+    {{- if and .tlsCert .tlsKey }} 
+    tls_cert: "{{ .tlsCert }}"
+    tls_key: "{{ .tlsKey }}"
+    {{- end }}
+    clusters:
+{{ toYaml .clusters | indent 4 }}
+    {{- end }}
+

charts/dex-k8s-authenticator/templates/deployment.yaml

@@ -0,0 +1,63 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: {{ template "dex-k8s-authenticator.fullname" . }}
+  labels:
+    app: {{ template "dex-k8s-authenticator.name" . }}
+    env: {{ default "dev" .Values.global.deployEnv }}
+    chart: {{ template "dex-k8s-authenticator.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ template "dex-k8s-authenticator.name" . }}
+      env: {{ default "dev" .Values.global.deployEnv }}
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "dex-k8s-authenticator.name" . }}
+        env: {{ default "dev" .Values.global.deployEnv }}
+        release: {{ .Release.Name }}
+    spec:
+      containers:
+      - name: {{ .Chart.Name }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        args: [ "--config", "config.yaml" ]
+        ports:
+        - name: http
+          containerPort: {{ default "5555" .Values.dexK8sAuthenticator.port }}
+          protocol: TCP
+        livenessProbe:
+          httpGet:
+            path: /
+            port: http
+        readinessProbe:
+          httpGet:
+            path: /
+            port: http
+        volumeMounts:
+        - name: config
+          subPath: config.yaml
+          mountPath: /app/config.yaml
+        resources:
+{{ toYaml .Values.resources | indent 10 }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 6 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 6 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 6 }}
+    {{- end }}
+      volumes:
+      - name: config
+        configMap:
+          name: {{ template "dex-k8s-authenticator.name" . }}

charts/dex-k8s-authenticator/templates/ingress.yaml

@@ -0,0 +1,40 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "dex-k8s-authenticator.fullname" . -}}
+{{- $servicePort := .Values.service.port -}}
+{{- $ingressPath := .Values.ingress.path -}}
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    app: {{ template "dex-k8s-authenticator.name" . }}
+    env: {{ default "dev" .Values.global.deployEnv }}
+    chart: {{ template "dex-k8s-authenticator.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+{{- with .Values.ingress.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+{{- if .Values.ingress.tls }}
+  tls:
+  {{- range .Values.ingress.tls }}
+  - hosts:
+    {{- range .hosts }}
+    - {{ . }}
+    {{- end }}
+    secretName: {{ .secretName }}
+  {{- end }}
+{{- end }}
+  rules:
+  {{- range .Values.ingress.hosts }}
+  - host: {{ . }}
+    http:
+      paths:
+      - path: {{ $ingressPath }}
+        backend:
+          serviceName: {{ $fullName }}
+          servicePort: http
+  {{- end }}
+{{- end }}

charts/dex-k8s-authenticator/templates/service.yaml

@@ -0,0 +1,20 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "dex-k8s-authenticator.fullname" . }}
+  labels:
+    app: {{ template "dex-k8s-authenticator.name" . }}
+    env: {{ default "dev" .Values.global.deployEnv }}
+    chart: {{ template "dex-k8s-authenticator.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: {{ template "dex-k8s-authenticator.name" . }}
+    release: {{ .Release.Name }}