backstage-custom-resource（后台自定义资源）

Purpose

Create and modify Backstage Custom Resources (CR) for the rhdh-operator. The rhdh-operator manages Red Hat Developer Hub (RHDH) deployments on Kubernetes/OpenShift using these CRs.

API Versions

Ask the user which version they need if not specified:

Consult references/v1alpha3-spec.md, references/v1alpha4-spec.md, or references/v1alpha5-spec.md for complete Go struct definitions and field documentation.

Workflow

1. Determine API version - Ask user or default to v1alpha5
2. Identify requirements - Database (local/external), Route, plugins, monitoring
3. Consult reference - Read the appropriate version spec from references/
4. Generate CR - Create valid YAML based on spec
5. Validate - Ensure referenced ConfigMaps/Secrets exist

Minimal CR

apiVersion: rhdh.redhat.com/v1alpha5
kind: Backstage
metadata:
  name: my-rhdh
  namespace: rhdh
spec:
  application: {}

Creates RHDH with local PostgreSQL, Route enabled, single replica.

Key Configuration Areas

Application

• appConfig.configMaps - App-config YAML files
• dynamicPluginsConfigMapName - Dynamic plugins ConfigMap
• extraEnvs - Environment variables from ConfigMaps/Secrets
• extraFiles - Files from ConfigMaps/Secrets/PVCs
• route - OpenShift Route with TLS

Database

• enableLocalDb: true - Operator-managed PostgreSQL (default)
• enableLocalDb: false + authSecretName - External database

Monitoring (v1alpha4+)

• monitoring.enabled: true - Prometheus metrics

Deployment

• deployment.kind - Deployment or StatefulSet (v1alpha5)
• deployment.patch - Strategic merge patch for workload

Reference Files

Consult these for complete field definitions:

• references/v1alpha3-spec.md - v1alpha3 Go structs and YAML mapping
• references/v1alpha4-spec.md - v1alpha4 with Monitoring
• references/v1alpha5-spec.md - v1alpha5 with Deployment kind

Example Files

• examples/backstage-cr.yaml - Common configuration patterns

External Resources

• rhdh-operator Repository
• RHDH Documentation