## Summary
Add external-dns as a standalone self-managed application in
`packages/extra/external-dns/`, allowing tenants to deploy and configure
their own DNS management directly from the dashboard.
## Motivation
Tenants need the ability to manage their own DNS domains with their own
provider. Following the [developers
guide](https://github.com/cozystack/website/pull/413), this is
implemented as an extra package (like `ingress` and `seaweedfs`) using
the HelmRelease-based pattern, rather than embedding it in the tenant
chart.
This enables multi-tenant scenarios where:
- Tenant A uses Cloudflare for `domain-a.com`
- Tenant B uses AWS Route53 for `domain-b.com`
- Each tenant deploys and manages external-dns independently from the
dashboard
## Changes
- **New package**: `packages/extra/external-dns/` — standalone
HelmRelease-based application
- **New PackageSource**:
`packages/core/platform/sources/external-dns-application.yaml` —
references `system/external-dns` and `extra/external-dns` components
- **Cleaned tenant chart**: removed the previously embedded
`externalDns` block from `packages/apps/tenant/`
## Features
- Support for 9 DNS providers: cloudflare, aws, azure, google,
digitalocean, linode, ovh, exoscale, godaddy
- Per-provider credential configuration with full JSON schema validation
- Domain filtering via `domainFilters`
- Configurable sync policy (`sync` or `upsert-only`)
- Namespaced operation (`namespaced: true`) for tenant isolation
- Unique `txtOwnerId` per namespace to prevent DNS record conflicts
- Resource sizing via presets or explicit CPU/memory
## Usage Example
Deploy from the dashboard, or via values:
```yaml
# Cloudflare
provider: cloudflare
domainFilters:
- example.com
cloudflare:
apiToken: "your-cloudflare-api-token"
```
```yaml
# AWS Route53
provider: aws
domainFilters:
- example.org
aws:
accessKeyId: "AKIAXXXXXXXX"
secretAccessKey: "your-secret-key"
region: "us-east-1"
```
## Test plan
- [ ] `helm template external-dns packages/extra/external-dns/ --set
provider=cloudflare --set cloudflare.apiToken=test` renders correctly
- [ ] `helm template external-dns packages/extra/external-dns/` fails
(provider required)
- [ ] `helm template wrong-name packages/extra/external-dns/ --set
provider=cloudflare` fails (release name check)
- [ ] Deploy external-dns from tenant dashboard
- [ ] Verify HelmRelease is created in tenant namespace with namespaced
RBAC
- [ ] Create an Ingress and verify DNS record is created
- [ ] Verify no conflict with global external-dns instance
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added an External DNS package for automatic DNS record management.
* Support for 9 DNS providers: Cloudflare, AWS, Azure, Google,
DigitalOcean, Linode, OVH, Exoscale, GoDaddy.
* Helm-based deployment with namespaced/system variants and release
configuration options.
* Configurable synchronization policies, domain filtering, provider
credentials, extra args, and resource presets.
* **Documentation**
* New README and schema-driven values documentation for installation and
configuration.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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