Centrlized argo app chart

Introduction

This is a centrlized Apps of apps chart.

It asssumes a single repo with the directory structure

(root)
|
|----- helm
|       |----- charts
|       |        |----- chart-a
|       |        |----- chart-b
|       |
|       |----- values
|                |----- values-a
|                |----- values-b

Example

3 tier app

Value

global:
  defaultProject: default
  defaultCommit: head
  defaultRepo: default
  paths:
    dirValues: ../../values
    dirCharts: helm/charts
  servers:
    default: https://kubernetes.default.svc
    qa-test: test-server
  repos:
    default: "git@github.com:MyOrg/infra/prod.git"
    qa-test: test repo

helmApplicationList:
  - name: postgresql
    source: {}
    destination: {}
    syncPolicy:
      automated: {}
      syncOptions:
        - CreateNamespace=true

  - name: be
    source: {}
    destination: {}
    syncPolicy:
      automated: {}
      syncOptions:
        - CreateNamespace=true

  - name: fe
    source: {}
    destination: {}
    syncPolicy:
      automated: {}
      syncOptions:
        - CreateNamespace=true

Result

---
# Source: argoprojects/templates/argoproject.yaml
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: postgresql
spec:
  project: default
  source:
    repoURL: "git@github.com:MyOrg/infra/prod.git"
    targetRevision: "head"
    path: "helm/charts/postgresql"
    helm:
      valueFiles:
      - "../../values/postgresql"
  destination:
    server: "https://kubernetes.default.svc"
    namespace: postgresql
  syncPolicy:
    automated: {}
    syncOptions:
    - CreateNamespace=true
---
# Source: argoprojects/templates/argoproject.yaml
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: be
spec:
  project: default
  source:
    repoURL: "git@github.com:MyOrg/infra/prod.git"
    targetRevision: "head"
    path: "helm/charts/be"
    helm:
      valueFiles:
      - "../../values/be"
  destination:
    server: "https://kubernetes.default.svc"
    namespace: be
  syncPolicy:
    automated: {}
    syncOptions:
    - CreateNamespace=true
---
# Source: argoprojects/templates/argoproject.yaml
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: fe
spec:
  project: default
  source:
    repoURL: "git@github.com:MyOrg/infra/prod.git"
    targetRevision: "head"
    path: "helm/charts/fe"
    helm:
      valueFiles:
      - "../../values/fe"
  destination:
    server: "https://kubernetes.default.svc"
    namespace: fe
  syncPolicy:
    automated: {}
    syncOptions:
    - CreateNamespace=true

Value file structure

Overview

global:
  defaultProject: default
  defaultCommit: head
  defaultRepo: default
  paths:
    dirValues: ../../values
    dirCharts: helm/charts
  servers:
    default: https://kubernetes.default.svc
    <additional server>: "<additional server url>"
  repos:
    default: "<Your default repo>"
    <additional repo>: "<additional repo url>"

helmApplicationList:
  - name: example
    # Override the default application argoproject
    overrideProject: myapp
    source: {}
      # Overrride the default repo based on the global.repos (default is default)
      # overrideRepo: "" # infra
      # # override the default target commit
      # overrideCommit: ""
      # # override the soruce path(default assumes <global.paths.dirCharts>/<app name>)
      # overrideSourcePath: ""
      # values:
      #   enable: true
      #   # fully override the source values list
      #   overrideSourceValuesList: []
      #   # add extravalues
      #   extraValuesList: []
    destination: {}
      # overrides the target namespace (default app name)
      # overrideNamespace: ""
      # override the default server based ont eh global.servers (default: default server)
      # overrideServer: ""
    syncPolicy:
      automated: {}
      syncOptions:
        - CreateNamespace=true

Global

Key	Format	Description
defaultProject	String	The default project name
defaultCommit	String	The default targetCommitRef
defaultRepo	String	The default repo key
paths.dirValues	String	The default value folder path
paths.dirCharts	String	The default chart folder path
servers	Dictionary	Dictionary of the servers
repos	Dictionary	Dictionary of the repositories

helmApplicationList

Key	Format	Description
name	String	Application name
overrideProject	String	Overrides the application project
source.overrideRepo	String	Overrides the source repository key
source.overrideCommit	String	Overrides the commitTargetRef
source.overrideSourcePath	String	Overrides the chart path
source.values.enable	bool	Enables custom value folder (Default true)
source.values.overrideSourceValuesList	List	Overrides the sources values list
source.values.extraValuesList	List	Adds extra value files to the default option
destination.overrideNamespace	String	Overrides the target namespace
destination.overrideServer	String	Overrides the target server key
syncPolicy	YAML Object	Sync policy yaml object