Chart.

charts/kubecache/.helmignore

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+# 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/

charts/kubecache/Chart.yaml

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+apiVersion: v2
+name: kubecache
+description: Helm chart to install kubecache on 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: 0.0.0
+
+# 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: "0.0.0"
+
+# Optional fields
+
+#icon: https://.../icon.svg
+
+sources:
+ - https://github.com/udhos/kubecache

charts/kubecache/templates/NOTES.txt

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

charts/kubecache/templates/_helpers.tpl

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

charts/kubecache/templates/_tplvalues.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Renders a value that contains template.
+Usage:
+{{ include "common.tplvalues.render" ( dict "value" .Values.path.to.the.Value "context" $) }}
+
+From: https://raw.githubusercontent.com/bitnami/charts/main/bitnami/common/templates/_tplvalues.tpl
+
+See: https://stackoverflow.com/questions/72816925/helm-templating-in-configmap-for-values-yaml
+*/}}
+{{- define "common.tplvalues.render" -}}
+ {{- if typeIs "string" .value }}
+ {{- tpl .value .context }}
+ {{- else }}
+ {{- tpl (.value | toYaml) .context }}
+ {{- end }}
+{{- end -}}

charts/kubecache/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+data:
+ {{- if .Values.configMapProperties }}
+ {{- include "common.tplvalues.render" ( dict "value" .Values.configMapProperties "context" $ ) | nindent 2 }}
+ {{- end }}
+

charts/kubecache/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+ labels:
+ {{- include "kubecache.labels" . | nindent 4 }}
+spec:
+ {{- if not .Values.autoscaling.enabled }}
+ replicas: {{ .Values.replicaCount }}
+ {{- end }}
+ selector:
+ matchLabels:
+ {{- include "kubecache.selectorLabels" . | nindent 6 }}
+ template:
+ metadata:
+ {{- if or .Values.podAnnotations (or (eq .Values.redeploy "always") (eq .Values.redeploy "reconfig")) }}
+ annotations:
+ {{- end }}
+ {{- if eq .Values.redeploy "always" }}
+ rollme: {{ randAlphaNum 5 | quote }}
+ {{- end }}
+ {{- if eq .Values.redeploy "reconfig" }}
+ checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+ {{- end }}
+ {{- with .Values.podAnnotations }}
+ {{- toYaml . | nindent 8 }}
+ {{- end }}
+ labels:
+ {{- include "kubecache.selectorLabels" . | nindent 8 }}
+ {{- if .Values.customLabels }}
+ {{- include "common.tplvalues.render" ( dict "value" .Values.customLabels "context" $ ) | nindent 8 }}
+ {{- end }}
+ spec:
+ topologySpreadConstraints:
+ - maxSkew: 1
+ topologyKey: topology.kubernetes.io/zone
+ whenUnsatisfiable: ScheduleAnyway
+ labelSelector:
+ matchLabels:
+ app.kubernetes.io/instance: {{ .Release.Name }}
+ - maxSkew: 1
+ topologyKey: kubernetes.io/hostname
+ whenUnsatisfiable: ScheduleAnyway
+ labelSelector:
+ matchLabels:
+ app.kubernetes.io/instance: {{ .Release.Name }}
+ {{- with .Values.imagePullSecrets }}
+ imagePullSecrets:
+ {{- toYaml . | nindent 8 }}
+ {{- end }}
+ serviceAccountName: {{ include "kubecache.serviceAccountName" . }}
+ securityContext:
+ {{- toYaml .Values.podSecurityContext | nindent 8 }}
+ dnsPolicy: ClusterFirst
+ restartPolicy: Always
+ containers:
+ - name: {{ .Release.Name }}
+ securityContext:
+ {{- toYaml .Values.securityContext | nindent 12 }}
+ image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+ imagePullPolicy: {{ .Values.image.pullPolicy }}
+ ports:
+ - name: http
+ containerPort: {{ .Values.service.port }}
+ protocol: TCP
+ envFrom:
+ - configMapRef:
+ name: {{ include "kubecache.fullname" . }}
+ startupProbe:
+ # must initialize within 3*100=300 seconds
+ httpGet:
+ path: {{ .Values.podHealthCheck.path }}
+ port: {{ .Values.podHealthCheck.port }}
+ periodSeconds: 3
+ failureThreshold: 100
+ readinessProbe:
+ # not ready after 10*6=60 seconds without success
+ httpGet:
+ path: {{ .Values.podHealthCheck.path }}
+ port: {{ .Values.podHealthCheck.port }}
+ scheme: HTTP
+ periodSeconds: 10
+ failureThreshold: 6
+ successThreshold: 1
+ timeoutSeconds: 5
+ livenessProbe:
+ # kill after 20*6=120 seconds without success
+ httpGet:
+ path: {{ .Values.podHealthCheck.path }}
+ port: {{ .Values.podHealthCheck.port }}
+ scheme: HTTP
+ periodSeconds: 20
+ failureThreshold: 6
+ successThreshold: 1
+ timeoutSeconds: 10 
+ resources:
+ {{- toYaml .Values.resources | nindent 12 }}
+ {{- with .Values.nodeSelector }}
+ nodeSelector:
+ {{- toYaml . | nindent 8 }}
+ {{- end }}
+ {{- with .Values.affinity }}
+ affinity:
+ {{- toYaml . | nindent 8 }}
+ {{- end }}
+ {{- with .Values.tolerations }}
+ tolerations:
+ {{- toYaml . | nindent 8 }}
+ {{- end }}

charts/kubecache/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: {{ .Values.autoscaling.apiVersion }}
+kind: HorizontalPodAutoscaler
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+ labels:
+ {{- include "kubecache.labels" . | nindent 4 }}
+spec:
+ scaleTargetRef:
+ apiVersion: apps/v1
+ kind: Deployment
+ name: {{ include "kubecache.fullname" . }}
+ minReplicas: {{ .Values.autoscaling.minReplicas }}
+ maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+ {{- if eq .Values.autoscaling.apiVersion "autoscaling/v1" }}
+ targetCPUUtilizationPercentage: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+ {{- else }}
+ {{- /*
+ defaults to autoscaling/v2
+ */}}
+ metrics:
+ - type: Resource
+ resource:
+ name: cpu
+ target:
+ averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+ type: Utilization
+ {{- end }}
+{{- end }}

charts/kubecache/templates/role.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+rules:
+- apiGroups:
+ - ""
+ resources:
+ - 'pods'
+ verbs:
+ - 'get'
+ - 'list'
+ - 'watch'

charts/kubecache/templates/rolebinding.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+roleRef:
+ apiGroup: rbac.authorization.k8s.io
+ kind: Role
+ name: {{ include "kubecache.fullname" . }}
+subjects:
+- kind: ServiceAccount
+ name: {{ include "kubecache.serviceAccountName" . }}
+ namespace: {{ .Release.Namespace }}

charts/kubecache/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+ name: {{ include "kubecache.fullname" . }}
+ labels:
+ {{- include "kubecache.labels" . | nindent 4 }}
+spec:
+ type: {{ .Values.service.type }}
+ ports:
+ - port: {{ .Values.service.port }}
+ targetPort: {{ .Values.service.port }}
+ protocol: TCP
+ name: http
+ selector:
+ {{- include "kubecache.selectorLabels" . | nindent 4 }}

charts/kubecache/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+ name: {{ include "kubecache.serviceAccountName" . }}
+ labels:
+ {{- include "kubecache.labels" . | nindent 4 }}
+ {{- with .Values.serviceAccount.annotations }}
+ annotations:
+ {{- toYaml . | nindent 4 }}
+ {{- end }}
+{{- end }}

charts/kubecache/templates/tests/test-connection.yaml

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