Take over the project

I've decided to maintain the project myself now, so I've forked it and
create a drone pipeline to push image to my registry

helm/templates/NOTES.txt

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+1. Get the application URL by running these commands:

helm/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "openvpn-chart.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 "openvpn-chart.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 "openvpn-chart.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "openvpn-chart.labels" -}}
+helm.sh/chart: {{ include "openvpn-chart.chart" . }}
+{{ include "openvpn-chart.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "openvpn-chart.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "openvpn-chart.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "openvpn-chart.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "openvpn-chart.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

helm/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "openvpn-chart.fullname" . }}
+  labels:
+    {{- include "openvpn-chart.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "openvpn-chart.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "openvpn-chart.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      volumes:
+        - name: pvc-openvpn
+          persistentVolumeClaim:
+            claimName: {{ include "openvpn-chart.fullname" . }}
+        - name: pki-scripts
+          configMap:
+            name: {{ include "openvpn-chart.fullname" . }}-pki-scripts
+      securityContext:
+          sysctls:
+            - name: net.ipv4.ip_forward
+              value: "1"
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - mountPath: "/etc/openvpn"
+              name: pvc-openvpn
+            - mountPath: /scripts
+              name: pki-scripts
+          env:
+          - name: OVPN_SERVER
+            value: "{{ .Values.openvpn.proto }}://{{ .Values.openvpn.host }}:{{ .Values.openvpn.port }}"
+          securityContext:
+            capabilities:
+              add:
+                - NET_ADMIN
+      initContainers:
+        # ----------------------------------------------------------------------
+        # -- This init container is generating the basic configuration
+        # ----------------------------------------------------------------------
+        - name: 0-ovpn-genconfig
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          volumeMounts:
+            - mountPath: "/etc/openvpn"
+              name: pvc-openvpn
+          env:
+            - name: OVPN_SERVER_URL
+              value: "{{ .Values.openvpn.proto }}://{{ .Values.openvpn.host }}:{{ .Values.openvpn.port }}"
+            - name: OVPN_DATA
+              value: "/etc/openvpn" 
+          command: 
+            - sh
+            - -c 
+            - 'if ! [ -f "/etc/openvpn/ovpn_env.sh" ]; then ovpn_genconfig -u $OVPN_SERVER_URL && touch /etc/openvpn/.init; fi'
+        - name: 1-ovpn-initpki
+          env:
+            - name: OVPN_DATA
+              value: /etc/openvpn
+            - name: EASYRSA_REQ_CN
+              value: {{ .Values.easyrsa.cn }}
+            - name: EASYRSA_REQ_COUNTRY
+              value: {{ .Values.easyrsa.country }}
+            - name: EASYRSA_REQ_PROVINCE
+              value: {{ .Values.easyrsa.province }}
+            - name: EASYRSA_REQ_CITY
+              value: {{ .Values.easyrsa.city }}
+            - name: EASYRSA_REQ_ORG
+              value: {{ .Values.easyrsa.org }}
+            - name: EASYRSA_REQ_EMAIL
+              value: {{ .Values.easyrsa.email }}
+            - name: EASYRSA_REQ_OU
+              value: {{ .Values.easyrsa.ou }}
+            - name: EASYRSA_ALGO
+              value: {{ .Values.easyrsa.algo }}
+            - name: EASYRSA_DIGEST
+              value: {{ .Values.easyrsa.digest }}
+            - name: EASYRSA_BATCH
+              value: "yes" 
+            - name: OVPN_SERVER_URL
+              value: "{{ .Values.openvpn.proto }}://{{ .Values.openvpn.host }}:{{ .Values.openvpn.port }}"
+          volumeMounts:
+            - mountPath: "/etc/openvpn"
+              name: pvc-openvpn
+            - mountPath: /scripts
+              name: pki-scripts
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          command: 
+            - bash
+            - /scripts/init_pki.sh
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

helm/templates/pki-generate-scripts.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "openvpn-chart.fullname" . }}-pki-scripts
+  labels:
+    {{- include "openvpn-chart.labels" . | nindent 4 }}
+data:
+  init_pki.sh: |
+    if [ ! -d /etc/openvpn/pki ]; then
+      source "$OPENVPN/ovpn_env.sh"
+      OVPN_DIR=/etc/openvpn
+      PKI_DIR=$OVPN_DIR/pki
+      cd $OVPN_DIR
+      export EASYRSA_BATCH=yes
+      unset EASYRSA_VARS_FILE
+      /usr/share/easy-rsa/easyrsa init-pki
+      /usr/share/easy-rsa/easyrsa build-ca nopass
+      /usr/share/easy-rsa/easyrsa build-server-full {{ .Values.openvpn.host }} nopass
+      /usr/share/easy-rsa/easyrsa gen-dh
+      cd $PKI_DIR
+      openvpn --genkey tls-crypt-v2-server private/{{ .Values.openvpn.host }}.pem
+      openvpn --genkey secret > ta.key
+    fi
+  gen_client.sh: |
+    source "$OPENVPN/ovpn_env.sh"
+    CLIENTNAME=$1
+    PASSWORD=$2
+    OVPN_DIR=/etc/openvpn
+    cd $OVPN_DIR
+    /usr/share/easy-rsa/easyrsa build-client-full $CLIENTNAME $PASSWORD

helm/templates/pvc.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "openvpn-chart.fullname" . }}
+  labels:
+    {{- include "openvpn-chart.labels" . | nindent 4 }}
+spec:
+  storageClassName: {{ .Values.storage.class }}
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: {{ .Values.storage.size }}

helm/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "openvpn-chart.fullname" . }}
+  labels:
+    {{- include "openvpn-chart.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      {{- if .Values.service.nodePort }}
+      nodePort: {{ int .Values.service.nodePort }}
+      {{- end}}
+      targetPort: {{ .Values.service.port | default 1194 }}
+      protocol: {{ .Values.service.protocol | default "UDP" | quote }}
+      name: openvpn
+  selector:
+    {{- include "openvpn-chart.selectorLabels" . | nindent 4 }}

helm/templates/tests/test-connection.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "openvpn-chart.fullname" . }}-test-connection"
+  labels:
+    {{- include "openvpn-chart.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "openvpn-chart.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never