blumeops/argocd/manifests/tailscale-operator/README.md
Erich Blume a8f4d00294 K8s Migration Phase 1: Infrastructure Setup (#29)
## Summary
- Split k8s migration plan into phases folder for easier navigation
- Added `tag:k8s` to Pulumi ACLs for Kubernetes workloads
- Phase 1 work in progress

## Phase 1 Goals
- Tailscale Kubernetes Operator
- CloudNativePG Operator
- PostgreSQL cluster for future app migrations

## Deployment and Testing
- [ ] Review Phase 1 plan
- [ ] `mise run tailnet-preview` to verify ACL changes
- [ ] `mise run tailnet-up` to apply ACL changes
- [ ] Create Tailscale OAuth client (manual)
- [ ] Deploy operators and PostgreSQL cluster

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Reviewed-on: https://forge.tail8d86e.ts.net/eblume/blumeops/pulls/29
2026-01-19 09:49:52 -08:00

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# Tailscale Kubernetes Operator
Manifests for the Tailscale Kubernetes Operator, managed via ArgoCD.
## Source
- `operator.yaml` - Static manifest from https://github.com/tailscale/tailscale/tree/main/cmd/k8s-operator/deploy/manifests
- Secret block removed from `operator.yaml` - managed separately via `secret.yaml.tpl`
- Image reference changed to fully-qualified `docker.io/tailscale/k8s-operator:stable` for CRI-O compatibility
## Prerequisites
1. OAuth client in Tailscale admin console with:
- Devices: Core (Read & Write) - tag: `tag:k8s-operator`
- Auth Keys: Read & Write
- Services: Write
2. ACL with `tag:k8s-operator` owning `tag:k8s` (so operator can tag resources it creates)
## Manual Bootstrap (Before ArgoCD)
Tailscale operator must be deployed before ArgoCD since ArgoCD uses Tailscale for ingress.
```bash
# 1. Create namespace
kubectl create namespace tailscale
# 2. Apply OAuth secret (uses 1Password)
op inject -i argocd/manifests/tailscale-operator/secret.yaml.tpl | kubectl apply -f -
# 3. Apply manifests via kustomize
kubectl apply -k argocd/manifests/tailscale-operator/
```
## Ongoing Management (After ArgoCD)
Once ArgoCD is running, the operator is managed by the `tailscale-operator` ArgoCD Application.
ArgoCD pulls manifests from forge and applies them automatically.
## ArgoCD CLI Commands
```bash
# Check application status
argocd app get tailscale-operator
# Trigger a sync (pull latest from forge and apply)
argocd app sync tailscale-operator
# Preview what would change without applying
argocd app diff tailscale-operator
# View deployment history
argocd app history tailscale-operator
# Hard refresh (clear cache and re-fetch from git)
argocd app get tailscale-operator --hard-refresh
```
## Verification
```bash
# Check operator pod is running
kubectl get pods -n tailscale
# Check operator logs
kubectl logs -n tailscale -l app.kubernetes.io/name=operator
```
## Files
| File | Description |
|------|-------------|
| `kustomization.yaml` | Kustomize configuration for all manifests |
| `operator.yaml` | Operator deployment, CRDs, RBAC (secret removed) |
| `proxyclass.yaml` | ProxyClass with fully-qualified images for CRI-O |
| `dnsconfig.yaml` | DNSConfig for cluster-to-tailnet name resolution |
| `egress-forge.yaml` | Egress proxy for accessing forge on indri |
| `secret.yaml.tpl` | 1Password template for OAuth credentials (manual) |
| `README.md` | This file |
## Notes
- **TODO:** The OAuth secret (`operator-oauth`) is not managed by ArgoCD and must be applied
manually. Future improvement: integrate with a secrets operator (e.g., External Secrets).
- Services using the Tailscale LoadBalancer must reference the ProxyClass:
```yaml
annotations:
tailscale.com/proxy-class: "crio-compat"
```
- The egress proxy for forge targets `indri.tail8d86e.ts.net` directly (not `forge.tail8d86e.ts.net`)
because Tailscale Serve hostnames are virtual and only work via the Tailscale client.