Ms helper tpl

charts/microservice/Chart.yaml

@@ -1,7 +1,9 @@
+---
 apiVersion: v2
 name: microservice
 description: A Helm chart for a microservice in Kubernetes
-
 type: application
-version: 0.1.0
-appVersion: "1.0"
+version: 0.1.2
+appVersion: "0.1.2"
+maintainers:
+  - name: Opstree Solutions

charts/microservice/templates/_helpers.tpl

@@ -0,0 +1,60 @@
+{{/* vim: set filetype=mustache: */}}
+
+{{/*
+Create  a defautl fully qualified app name
+It will use the release name to give the app name
+*/}}
+
+{{- define "app.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 60 | 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 "app.tempname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 60 | 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 }}
+
+{{- define "app.fullname" -}}
+{{- printf "%s-%s" ( include "app.tempname" . ) "app" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "app.labels" -}}
+app: {{ include "app.tempname" . }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "app.selectorLabels" -}}
+app: {{ include "app.tempname" . }}
+{{- end }}%
+
+{{/*
+service name
+*/}}
+{{- define "app.servicename" -}}
+{{- printf "%s-%s" ( include "app.tempname" . ) "svc" | trunc 63 | trimSuffix "-" }}
+{{- end }}%
+
+{{/*
+configmap name
+*/}}
+{{- define "app.configmapname" -}}
+{{- printf "%s-%s" ( include "app.tempname" . ) "cm" | trunc 63 | trimSuffix "-" }}
+{{- end }}%

charts/microservice/templates/deployment.yaml

@@ -1,18 +1,18 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: {{ include "microservice.fullname" . }}
+  name: {{ include "app.fullname" . }}
   labels:
-    {{- include "microservice.labels" . | nindent 4 }}
+    {{- include "app.labels" . | nindent 4 }}
 spec:
   replicas: {{ .Values.replicaCount }}
   selector:
     matchLabels:
-      {{- include "microservice.selectorLabels" . | nindent 6 }}
+      {{- include "app.selectorLabels" . | nindent 6 }}
   template:
     metadata:
       labels:
-        {{- include "microservice.selectorLabels" . | nindent 8 }}
+        {{- include "app.selectorLabels" . | nindent 8 }}
     spec:
       containers:
         - name: {{ .Chart.Name }}

charts/microservice/templates/service.yaml

@@ -1,9 +1,9 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: {{ include "microservice.fullname" . }}
+  name: {{ include "app.servicename" . }}
   labels:
-    {{- include "microservice.labels" . | nindent 4 }}
+    {{- include "app.labels" . | nindent 4 }}
 spec:
   type: {{ .Values.service.type }}
   ports:
@@ -12,4 +12,4 @@ spec:
       protocol: TCP
       name: http
   selector:
-    {{- include "microservice.selectorLabels" . | nindent 4 }}
+    {{- include "app.selectorLabels" . | nindent 4 }}

charts/microservice/values.yaml

@@ -1,9 +1,11 @@
 replicaCount: 1
 
+fullnameOverride: "nginx"
+nameOverride: ""
 image:
-  repository: nginx # your microservice image name 
+  repository: nginx
   pullPolicy: IfNotPresent
-  tag: "latest"     # your microservice image tag
+  tag: "latest"
 
 service:
   type: ClusterIP