Added Helm chart for KillBill, Kaui, and MariaDB

docker/README.adoc

@@ -10,7 +10,7 @@ toc::[]
 [[available-images]]
 ## Available images
 
-* `killbill/base:latest`: Shared base image with Tomcat and KPM inside Ubuntu 20.04 LTS. It also contains Ansible and our playbooks from https://github.com/killbill/killbill-cloud. It starts Tomcat on startup.
+* `killbill/base:latest`: Shared base image with Tomcat and KPM inside Ubuntu 24.04 LTS. It also contains Ansible and our playbooks from https://github.com/killbill/killbill-cloud. It starts Tomcat on startup.
 * `killbill/killbill:latest`: Empty base Kill Bill image. Includes the `killbill-flyway` utility. It runs `kpm install` on startup. If no custom `kpm.yml` file is specified, the latest version of Kill Bill is downloaded.
 * `killbill/killbill:0.X.Y`: Image with a specific version of Kill Bill installed.
 * `killbill/kaui:latest`: Empty base Kaui image. It runs `kpm install` on startup. If no custom `kpm.yml` file is specified, the latest version of Kaui is downloaded.

docker/templates/build/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 LABEL maintainer="killbilling-users@googlegroups.com"
 
 USER root

docker/templates/killbill/latest/killbill.sh

@@ -7,13 +7,15 @@ echo "Installing plugins..."
 # Run both the main playbook and the one enabling structured logging
 $KPM_INSTALL_CMD $KILLBILL_CLOUD_ANSIBLE_ROLES/killbill_json_logging.yml
 
-until mysql --protocol=TCP -h127.0.0.1 -P3306 -uroot -pkillbill -e "SELECT 1"; do
+DB_HOST="${DB_HOST:-127.0.0.1}"
+
+until mysql --protocol=TCP -h"$DB_HOST" -P3306 -uroot -pkillbill -e "SELECT 1"; do
   echo "Waiting for DB..."
   sleep 5
 done
 
 INSTALL_PLUGINS_CMD="$INSTALL_PLUGINS_CMD \
-  -e db_config_address=127.0.0.1 \
+  -e db_config_address=$DB_HOST \
   -e db_config_port=3306 \
   -e db_config_username=$KILLBILL_DAO_USER \
   -e db_config_password=$KILLBILL_DAO_PASSWORD \

helm/killbill/.helmignore

@@ -0,0 +1,23 @@
+# 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
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

helm/killbill/Chart.yaml

@@ -0,0 +1,24 @@
+apiVersion: v2
+name: killbill
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

helm/killbill/templates/NOTES.txt

@@ -0,0 +1,35 @@
+1. Get the application URL by running these commands:
+{{- if .Values.httpRoute.enabled }}
+{{- if .Values.httpRoute.hostnames }}
+    export APP_HOSTNAME={{ .Values.httpRoute.hostnames | first }}
+{{- else }}
+    export APP_HOSTNAME=$(kubectl get --namespace {{(first .Values.httpRoute.parentRefs).namespace | default .Release.Namespace }} gateway/{{ (first .Values.httpRoute.parentRefs).name }} -o jsonpath="{.spec.listeners[0].hostname}")
+  {{- end }}
+{{- if and .Values.httpRoute.rules (first .Values.httpRoute.rules).matches (first (first .Values.httpRoute.rules).matches).path.value }}
+    echo "Visit http://$APP_HOSTNAME{{ (first (first .Values.httpRoute.rules).matches).path.value }} to use your application"
+
+    NOTE: Your HTTPRoute depends on the listener configuration of your gateway and your HTTPRoute rules.
+    The rules can be set for path, method, header and query parameters.
+    You can check the gateway configuration with 'kubectl get --namespace {{(first .Values.httpRoute.parentRefs).namespace | default .Release.Namespace }} gateway/{{ (first .Values.httpRoute.parentRefs).name }} -o yaml'
+{{- end }}
+{{- else if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "killbill.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "killbill.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "killbill.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  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.kubernetes.io/name={{ include "killbill.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

helm/killbill/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "killbill.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 "killbill.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 "killbill.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "killbill.labels" -}}
+helm.sh/chart: {{ include "killbill.chart" . }}
+{{ include "killbill.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "killbill.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "killbill.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "killbill.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "killbill.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

helm/killbill/templates/hpa.yaml

@@ -0,0 +1,32 @@
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "killbill.fullname" . }}
+  labels:
+    {{- include "killbill.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "killbill.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}

helm/killbill/templates/httproute.yaml

@@ -0,0 +1,38 @@
+{{- if .Values.httpRoute.enabled -}}
+{{- $fullName := include "killbill.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "killbill.labels" . | nindent 4 }}
+  {{- with .Values.httpRoute.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  parentRefs:
+    {{- with .Values.httpRoute.parentRefs }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- with .Values.httpRoute.hostnames }}
+  hostnames:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  rules:
+    {{- range .Values.httpRoute.rules }}
+    {{- with .matches }}
+    - matches:
+      {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .filters }}
+      filters:
+      {{- toYaml . | nindent 8 }}
+    {{- end }}
+      backendRefs:
+        - name: {{ $fullName }}
+          port: {{ $svcPort }}
+          weight: 1
+    {{- end }}
+{{- end }}

helm/killbill/templates/kaui-deployment.yaml

@@ -0,0 +1,39 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: kaui
+spec:
+  replicas: {{ .Values.kaui.replicaCount }}
+
+  selector:
+    matchLabels:
+      app: kaui
+
+  template:
+    metadata:
+      labels:
+        app: kaui
+
+    spec:
+      containers:
+        - name: kaui
+          image: "{{ .Values.kaui.image.repository }}:{{ .Values.kaui.image.tag }}"
+          imagePullPolicy: IfNotPresent
+
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+
+          env:
+            - name: KAUI_CONFIG_DAO_USER
+              value: root
+
+            - name: KAUI_CONFIG_DAO_PASSWORD
+              value: killbill
+
+            - name: KAUI_CONFIG_DAO_URL
+              value: jdbc:mysql://mariadb:3306/kaui
+
+            - name: KAUI_KILLBILL_URL
+              value: http://killbill:8080

helm/killbill/templates/kaui-service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: kaui
+spec:
+  type: ClusterIP
+
+  ports:
+    - port: {{ .Values.kaui.service.port }}
+      targetPort: 9090
+      protocol: TCP
+      name: http
+
+  selector:
+    app: kaui

helm/killbill/templates/killbill-deployment.yaml

@@ -0,0 +1,55 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: killbill
+spec:
+  replicas: {{ .Values.killbill.replicaCount }}
+
+  selector:
+    matchLabels:
+      app: killbill
+
+  template:
+    metadata:
+      labels:
+        app: killbill
+
+    spec:
+      containers:
+        - name: killbill
+          image: "{{ .Values.killbill.image.repository }}:{{ .Values.killbill.image.tag }}"
+          imagePullPolicy: IfNotPresent
+
+          ports:
+            - name: http
+              containerPort: 8080
+
+          env:
+            - name: DB_HOST
+              value: mariadb
+
+            - name: KILLBILL_ADMIN_PASSWORD
+              value: password
+
+            - name: KILLBILL_DAO_USER
+              value: root
+
+            - name: KILLBILL_DAO_PASSWORD
+              value: killbill
+
+            - name: KILLBILL_DAO_URL
+              value: jdbc:mysql://mariadb:3306/killbill
+
+          readinessProbe:
+            httpGet:
+              path: /1.0/healthcheck
+              port: 8080
+            initialDelaySeconds: 30
+            periodSeconds: 10
+
+          livenessProbe:
+            httpGet:
+              path: /1.0/healthcheck
+              port: 8080
+            initialDelaySeconds: 60
+            periodSeconds: 20

helm/killbill/templates/killbill-service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: killbill
+spec:
+  type: ClusterIP
+
+  ports:
+    - port: {{ .Values.killbill.service.port }}
+      targetPort: 8080
+      protocol: TCP
+      name: http
+
+  selector:
+    app: killbill