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@weaveworks/backstage-plugin-flux

Flux plugin for Backstage

The Flux plugin for Backstage provides views of Flux resources available in Kubernetes clusters.

Content

• FluxHelmReleaseCard - displays the state of HelmReleases for the Entity.

Prerequisite

The Kubernetes plugins including @backstage/plugin-kubernetes and @backstage/plugin-kubernetes-backend are installed and configured by following the installation and configuration guides.

The Kubernetes plugin is configured and connects to the cluster using a ServiceAccount.

You will need to bind the ServiceAccount to the helmrelease-viewer-role that comes with Flux.

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: backstage-cluster-view-rolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: helmrelease-viewer-role
subjects:
- kind: ServiceAccount
  name: backstage # replace with the name of the SA that your Backstage runs as
  namespace: flux-system

Installation

Install the plugin dependency in your Backstage app package:

# From your Backstage root directory
yarn add --cwd packages/app @weaveworks/backstage-plugin-flux

Configuration

1. Add the card to your app EntityPage.tsx

// In packages/app/src/components/catalog/EntityPage.tsx
import { FluxHelmReleaseCard } from '@weaveworks/backstage-plugin-flux';

// You can add the tab to any number of pages, the service page is shown as an
// example here
const overviewContent = (
  <Grid container spacing={3} alignItems="stretch">
    // ...
    <Grid item md={4} xs={12}>
      <FluxHelmReleaseCard />
    </Grid>
    // ...
  </Grid>
);

2. Add the backstage.io/kubernetes-id to your Backstage entity.

apiVersion: backstage.io/v1alpha1
kind: Component
metadata:
  name: carts-service
  description: A microservices-demo service that provides shopping carts for users
  tags:
    - java
  annotations:
    backstage.io/kubernetes-id: carts-service
spec:
  type: service
  lifecycle: production
  owner: sockshop-team
  system: carts

3. Label your Flux HelmRelease with the correct label:

apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: carts-nginx
  namespace: carts
  labels:
    backstage.io/kubernetes-id: carts-service
spec:
  chart:
    spec:
      chart: nginx
      reconcileStrategy: ChartVersion
      sourceRef:
        kind: HelmRepository
        name: podinfo
  interval: 1m0s

4. Configure your app-config.yaml

# app.config.yaml

gitops:
  baseUrl: https://wego.example.com/