What You'll Learn

• Create an OVHcloud Object Storage container
• Package Helm charts
• Upload them using the S3-compatible API
• Use the repo privately with Helm

Prerequisites

• OVHcloud account with Public Cloud enabled
• A project with Object Storage activated
• helm, awscli, and optionally s3cmd installed
• Your Object Storage S3 credentials

Create an Object Storage Container

• Go to your OVHcloud Control Panel
• Navigate to: Public Cloud → Object Storage
• Click Create Container
• Name: helm-repo
• Region: (e.g., GRA, BHS, etc.)
• Type: Private or Public (we’ll go with private here)

Get Your S3-Compatible Credentials

• In the OVHcloud panel: Users & Roles → OpenStack User
• Generate an OpenStack user with S3 credentials
• Save the:
• Access Key
• Secret Key
• Endpoint (e.g., s3.gra.io.cloud.ovh.net)

Configure AWS CLI

aws configure --profile ovh-helm

• Access Key: (paste yours)
• Secret Key: (paste yours)
• Region: gra
• Output format: json

Set the endpoint manually in each command using --endpoint-url.

Create and Package a Helm Chart

helm create my-app
helm package my-app

This creates my-app-0.1.0.tgz

Generate index.yaml

helm repo index . --url https://s3.gra.io.cloud.ovh.net/helm-repo

This will generate index.yaml compatible with Helm.

Upload to OVHcloud Object Storage

aws s3 cp my-app-0.1.0.tgz s3://helm-repo/ --profile ovh-helm --endpoint-url https://s3.gra.io.cloud.ovh.net
aws s3 cp index.yaml s3://helm-repo/ --profile ovh-helm --endpoint-url https://s3.gra.io.cloud.ovh.net

To list contents:

aws s3 ls s3://helm-repo/ --profile ovh-helm --endpoint-url https://s3.gra.io.cloud.ovh.net

Access the Repo Privately

Helm can’t use S3 directly yet, so we use tools like:

Option A: Use ChartMuseum (self-hosted)

You can proxy your OVH storage with ChartMuseum running in Kubernetes or locally.

Option B: Use s3 with helm-s3 plugin

Install:

helm plugin install https://github.com/hypnoglow/helm-s3.git

Configure:

export AWS_ACCESS_KEY_ID=your_key
export AWS_SECRET_ACCESS_KEY=your_secret
export AWS_REGION=gra
export HELM_S3_ENDPOINT=https://s3.gra.io.cloud.ovh.net

Add the repo:

helm repo add ovh-s3-repo s3://helm-repo
helm repo update

Install:

helm install myapp ovh-s3-repo/my-app

Automate with GitHub Actions

Optionally, automate chart packaging and upload with a GitHub workflow:

name: Upload Helm Chart

on:
  push:
    paths:
      - 'charts/**'

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Helm
        uses: azure/setup-helm@v3

      - name: Package Chart
        run: |
          helm package charts/my-app
          helm repo index . --url https://s3.gra.io.cloud.ovh.net/helm-repo

      - name: Upload to OVH S3
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        run: |
          aws s3 cp my-app-*.tgz s3://helm-repo/ --endpoint-url https://s3.gra.io.cloud.ovh.net
          aws s3 cp index.yaml s3://helm-repo/ --endpoint-url https://s3.gra.io.cloud.ovh.net