docs: Add comprehensive deployment and variables reference

Add detailed documentation to enable autonomous deployment by other AI agents.

New files:
- DEPLOYMENT.md: Complete step-by-step deployment guide
  - Prerequisites checklist
  - Required vs optional variables clearly marked
  - All configuration variables documented with examples
  - Troubleshooting section
  - Quick deploy example with all values
  - Configuration summary table

- VARIABLES.md: Complete variables reference
  - All variables listed with file, line, type, description
  - Required variables clearly marked
  - Optional variables with defaults
  - Variables grouped by use case
  - Quick copy templates
  - Environment variables reference

Updated README.md:
- Add links to new documentation files
- Clear pointer to DEPLOYMENT.md for deployment

These docs enable another Claude Code instance to:
1. Identify all required configuration variables
2. Know where to find/set each variable
3. Understand what values are valid
4. Deploy successfully without human intervention

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
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# Deployment Guide
This guide provides step-by-step instructions for deploying the Antigravity Dev Container to Kubernetes.
## Prerequisites
- Kubernetes cluster with Gateway API support
- `kubectl` configured to access your cluster
- ReadWriteMany storage class available (e.g., `ceph-filesystem`, `nfs-client`, `efs-sc`)
- Sealed Secrets controller installed (for secret encryption)
- GitHub Container Registry access (images are public)
## Required Configuration Variables
Before deploying, you need to provide the following configuration:
### 1. Storage Configuration
**Variable:** `storageClassName`
**Location:** `k8s/statefulset.yaml` (line ~117)
**Description:** The ReadWriteMany storage class name in your cluster
**Example values:**
- `ceph-filesystem` (Rook-Ceph)
- `nfs-client` (NFS)
- `efs-sc` (AWS EFS)
- `azurefile` (Azure Files)
- `filestore` (GCP Filestore)
**How to find your storage class:**
```bash
kubectl get storageclass
```
Look for a storage class that supports `ReadWriteMany` access mode.
### 2. GitHub Repository (Required)
**Variable:** `github-repo`
**Location:** `k8s/configmap.yaml` (line ~9)
**Description:** The GitHub repository URL to clone on container startup
**Format:** `https://github.com/username/repository`
**Example:** `https://github.com/cpfarhood/my-project`
### 3. GitHub Token (Optional, for private repos)
**Variable:** `github-token`
**Location:** `k8s/secrets-example.yaml` (sealed secret)
**Description:** GitHub Personal Access Token for cloning private repositories
**Format:** `ghp_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`
**Required:** Only if cloning a private repository
**How to create a GitHub token:**
1. Go to https://github.com/settings/tokens
2. Click "Generate new token (classic)"
3. Select scopes: `repo` (for private repos)
4. Generate and copy the token
### 4. VNC Password (Optional)
**Variable:** `vnc-password`
**Location:** `k8s/secrets-example.yaml` (sealed secret)
**Description:** Password for accessing the VNC web interface
**Format:** Any string (recommend 12+ characters)
**Required:** Optional, but recommended for security
### 5. Gateway Configuration (Required for external access)
**Variables:**
- `parentRefs.name` - Your Gateway resource name
- `parentRefs.namespace` - Namespace where Gateway is deployed
- `hostnames` - Domain name for accessing the container
**Location:** `k8s/httproute.yaml`
**Example:**
```yaml
parentRefs:
- name: cilium-gateway # Your Gateway name
namespace: kube-system # Your Gateway namespace
hostnames:
- "devcontainer.example.com" # Your domain
```
### 6. Namespace (Optional)
**Variable:** `namespace`
**Location:** `k8s/kustomization.yaml` (line ~5)
**Description:** Kubernetes namespace to deploy into
**Default:** `default`
**Example:** `devcontainer`, `development`, `team-workspaces`
### 7. Container Image (Optional)
**Variable:** `image`
**Location:** `k8s/statefulset.yaml` (line ~32)
**Description:** Docker image to use
**Default:** `ghcr.io/cpfarhood/devcontainer:latest`
**Format:** `registry/repository:tag`
### 8. Resource Limits (Optional)
**Variables:**
- `resources.requests.memory` (default: `2Gi`)
- `resources.requests.cpu` (default: `1000m`)
- `resources.limits.memory` (default: `8Gi`)
- `resources.limits.cpu` (default: `4000m`)
**Location:** `k8s/statefulset.yaml` (lines ~98-103)
### 9. Happy Coder Configuration (Optional)
**Variables:**
- `happy-server-url` - Custom Happy server URL
- `happy-webapp-url` - Custom Happy webapp URL
**Location:** `k8s/configmap.yaml` (lines ~12-13, commented out)
**Default:** Uses Happy's default servers
**When to set:** Only if using a self-hosted Happy instance
## Deployment Steps
### Step 1: Clone the Repository
```bash
git clone https://github.com/cpfarhood/devcontainer.git
cd devcontainer
```
### Step 2: Configure Storage Class
Edit `k8s/statefulset.yaml` and find the `volumeClaimTemplates` section (around line 117):
```bash
# Find your storage class
kubectl get storageclass
# Edit the file
vi k8s/statefulset.yaml
```
Change `storageClassName` to match your cluster:
```yaml
volumeClaimTemplates:
- metadata:
name: userhome
spec:
accessModes: [ "ReadWriteMany" ]
storageClassName: "ceph-filesystem" # ← Change this
resources:
requests:
storage: 10Gi
```
### Step 3: Configure GitHub Repository
Edit `k8s/configmap.yaml`:
```bash
vi k8s/configmap.yaml
```
Set your repository URL:
```yaml
data:
github-repo: "https://github.com/yourusername/yourrepo"
```
### Step 4: Configure Gateway (HTTPRoute)
Edit `k8s/httproute.yaml`:
```bash
# Find your Gateway
kubectl get gateway -A
# Edit the file
vi k8s/httproute.yaml
```
Update with your Gateway details:
```yaml
spec:
parentRefs:
- name: your-gateway-name # ← Change this
namespace: your-gateway-namespace # ← Change this
hostnames:
- "devcontainer.yourdomain.com" # ← Change this
```
### Step 5: Create Secrets
Create the secrets for GitHub token and VNC password:
```bash
# Create the secret
kubectl create secret generic antigravity-secrets \
--from-literal=github-token='ghp_your_token_here' \
--from-literal=vnc-password='your_vnc_password' \
--dry-run=client -o yaml | \
kubeseal --format=yaml > k8s/sealedsecrets.yaml
# Verify the sealed secret was created
cat k8s/sealedsecrets.yaml
```
**If you don't have Sealed Secrets controller:**
Option 1: Install Sealed Secrets
```bash
kubectl apply -f https://github.com/bitnami-labs/sealed-secrets/releases/download/v0.24.0/controller.yaml
```
Option 2: Use plain secrets (not recommended for production)
```bash
kubectl create secret generic antigravity-secrets \
--from-literal=github-token='ghp_your_token_here' \
--from-literal=vnc-password='your_vnc_password'
```
### Step 6: Review Configuration (Optional)
Review and adjust optional settings:
**Namespace:**
```bash
vi k8s/kustomization.yaml
# Change line 5: namespace: default
```
**Resource limits:**
```bash
vi k8s/statefulset.yaml
# Adjust lines 98-103 for your needs
```
### Step 7: Deploy to Kubernetes
```bash
# Deploy everything
kubectl apply -k k8s/
# Or if you changed the namespace
kubectl apply -k k8s/ -n your-namespace
```
### Step 8: Verify Deployment
```bash
# Check StatefulSet
kubectl get statefulset antigravity
# Check Pod
kubectl get pods -l app=antigravity
# Check PVC
kubectl get pvc -l app=antigravity
# Check HTTPRoute
kubectl get httproute antigravity
# View logs
kubectl logs antigravity-0
```
### Step 9: Access the Container
**Option A: Via HTTPRoute (external access)**
```bash
# Open in browser
open https://devcontainer.yourdomain.com
```
**Option B: Via Port Forward (local access)**
```bash
# Port forward to localhost
kubectl port-forward statefulset/antigravity 5800:5800
# Open in browser
open http://localhost:5800
```
## Configuration Summary
Here's a quick checklist of all variables you need to set:
### Required Variables
| Variable | File | Line | Example Value |
|----------|------|------|---------------|
| `storageClassName` | `k8s/statefulset.yaml` | ~117 | `ceph-filesystem` |
| `github-repo` | `k8s/configmap.yaml` | ~9 | `https://github.com/user/repo` |
| `parentRefs.name` | `k8s/httproute.yaml` | ~8 | `cilium-gateway` |
| `parentRefs.namespace` | `k8s/httproute.yaml` | ~9 | `kube-system` |
| `hostnames` | `k8s/httproute.yaml` | ~10 | `devcontainer.example.com` |
### Optional Variables
| Variable | File | Line | Default | When to Change |
|----------|------|------|---------|----------------|
| `namespace` | `k8s/kustomization.yaml` | ~5 | `default` | If deploying to different namespace |
| `github-token` | Sealed secret | N/A | None | For private repos |
| `vnc-password` | Sealed secret | N/A | None | For VNC security |
| `image` | `k8s/statefulset.yaml` | ~32 | `ghcr.io/cpfarhood/devcontainer:latest` | For specific version or custom build |
| `resources.*` | `k8s/statefulset.yaml` | ~98-103 | 2Gi/8Gi RAM, 1/4 CPU | Based on workload needs |
| `happy-server-url` | `k8s/configmap.yaml` | ~12 | Default Happy server | For self-hosted Happy |
| `happy-webapp-url` | `k8s/configmap.yaml` | ~13 | Default Happy webapp | For self-hosted Happy |
## Troubleshooting
### Pod not starting
**Check events:**
```bash
kubectl describe pod antigravity-0
```
**Common issues:**
- Storage class doesn't support ReadWriteMany
- PVC not binding (check storage class exists)
- Image pull errors (check image name)
### Repository not cloning
**Check logs:**
```bash
kubectl logs antigravity-0 | grep -A 10 "Repository Initialization"
```
**Common issues:**
- Invalid GitHub URL
- Private repo without token
- Token doesn't have correct permissions
### HTTPRoute not working
**Check HTTPRoute:**
```bash
kubectl describe httproute antigravity
```
**Common issues:**
- Gateway name/namespace incorrect
- Domain not pointing to Gateway
- TLS certificate not issued
### VNC not accessible
**Check service:**
```bash
kubectl get svc antigravity
kubectl describe svc antigravity
```
**Port forward test:**
```bash
kubectl port-forward antigravity-0 5800:5800
# Try accessing http://localhost:5800
```
## Quick Deploy Example
Complete deployment with all values filled in:
```bash
# 1. Set your values
STORAGE_CLASS="ceph-filesystem"
GITHUB_REPO="https://github.com/myuser/myproject"
GITHUB_TOKEN="ghp_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
VNC_PASSWORD="my-secure-password-123"
GATEWAY_NAME="cilium-gateway"
GATEWAY_NAMESPACE="kube-system"
DOMAIN="devcontainer.example.com"
# 2. Update storage class
sed -i "s/storageClassName: .*/storageClassName: \"$STORAGE_CLASS\"/" k8s/statefulset.yaml
# 3. Update GitHub repo
sed -i "s|github-repo: .*|github-repo: \"$GITHUB_REPO\"|" k8s/configmap.yaml
# 4. Update Gateway
sed -i "s/- name: gateway/- name: $GATEWAY_NAME/" k8s/httproute.yaml
sed -i "s/namespace: gateway-system/namespace: $GATEWAY_NAMESPACE/" k8s/httproute.yaml
sed -i "s/antigravity.example.com/$DOMAIN/" k8s/httproute.yaml
# 5. Create sealed secret
kubectl create secret generic antigravity-secrets \
--from-literal=github-token="$GITHUB_TOKEN" \
--from-literal=vnc-password="$VNC_PASSWORD" \
--dry-run=client -o yaml | \
kubeseal --format=yaml > k8s/sealedsecrets.yaml
# 6. Deploy
kubectl apply -k k8s/
# 7. Watch deployment
kubectl get pods -l app=antigravity -w
```
## Updates and Maintenance
### Updating the Image
The image is automatically built and pushed to ghcr.io on every commit to main.
**To use latest:**
```bash
kubectl set image statefulset/antigravity \
antigravity=ghcr.io/cpfarhood/devcontainer:latest
```
**To use specific version:**
```bash
kubectl set image statefulset/antigravity \
antigravity=ghcr.io/cpfarhood/devcontainer:v1.0.0
```
### Changing Repository
Edit the ConfigMap and restart:
```bash
kubectl edit configmap antigravity-config
# Change github-repo value
kubectl rollout restart statefulset/antigravity
```
### Scaling
```bash
# Scale to multiple instances (each gets own home PVC)
kubectl scale statefulset antigravity --replicas=3
```
## Support
For issues or questions:
- GitHub Issues: https://github.com/cpfarhood/devcontainer/issues
- Documentation: https://github.com/cpfarhood/devcontainer
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- Workspace mounted at `/workspace`
- Repository cloned on first startup
## Documentation
- **[DEPLOYMENT.md](DEPLOYMENT.md)** - Complete deployment guide with step-by-step instructions
- **[VARIABLES.md](VARIABLES.md)** - Reference for all configuration variables
- **[README.md](README.md)** - This file (overview and quick start)
## Quick Start
**👉 For detailed deployment instructions, see [DEPLOYMENT.md](DEPLOYMENT.md)**
### 1. Get the Image
The image is automatically built and published to GitHub Container Registry on every push to main.
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# Configuration Variables Reference
Quick reference for all configurable variables in this project.
## Required Variables
These MUST be configured before deployment:
### Storage Class Name
- **Variable:** `storageClassName`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~117
- **Type:** String
- **Description:** ReadWriteMany storage class available in your cluster
- **Example:** `ceph-filesystem`, `nfs-client`, `efs-sc`
- **How to find:** `kubectl get storageclass`
### GitHub Repository URL
- **Variable:** `github-repo`
- **File:** `k8s/configmap.yaml`
- **Line:** ~9
- **Type:** String (URL)
- **Description:** Repository to clone on container startup
- **Format:** `https://github.com/username/repository`
- **Example:** `https://github.com/cpfarhood/my-project`
### Gateway Name
- **Variable:** `parentRefs[0].name`
- **File:** `k8s/httproute.yaml`
- **Line:** ~8
- **Type:** String
- **Description:** Name of your Gateway resource
- **How to find:** `kubectl get gateway -A`
### Gateway Namespace
- **Variable:** `parentRefs[0].namespace`
- **File:** `k8s/httproute.yaml`
- **Line:** ~9
- **Type:** String
- **Description:** Namespace where Gateway is deployed
- **How to find:** `kubectl get gateway -A`
### Domain Hostname
- **Variable:** `hostnames[0]`
- **File:** `k8s/httproute.yaml`
- **Line:** ~11
- **Type:** String (FQDN)
- **Description:** Domain name for accessing the container
- **Example:** `devcontainer.example.com`
## Optional Variables
### GitHub Token
- **Variable:** `github-token`
- **File:** Sealed Secret
- **Type:** String (GitHub PAT)
- **Description:** Personal Access Token for private repos
- **Required:** Only for private repositories
- **Format:** `ghp_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`
- **Scopes:** `repo`
### VNC Password
- **Variable:** `vnc-password`
- **File:** Sealed Secret
- **Type:** String
- **Description:** Password for VNC web interface
- **Required:** Recommended for security
- **Format:** Any string (12+ characters recommended)
### Namespace
- **Variable:** `namespace`
- **File:** `k8s/kustomization.yaml`
- **Line:** ~5
- **Type:** String
- **Description:** Kubernetes namespace for deployment
- **Default:** `default`
### Container Image
- **Variable:** `image`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~32
- **Type:** String (image reference)
- **Description:** Docker image to deploy
- **Default:** `ghcr.io/cpfarhood/devcontainer:latest`
- **Format:** `registry/repository:tag`
### Memory Request
- **Variable:** `resources.requests.memory`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~99
- **Type:** String (quantity)
- **Description:** Minimum memory to reserve
- **Default:** `2Gi`
- **Format:** `<number>Gi` or `<number>Mi`
### Memory Limit
- **Variable:** `resources.limits.memory`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~102
- **Type:** String (quantity)
- **Description:** Maximum memory allowed
- **Default:** `8Gi`
- **Format:** `<number>Gi` or `<number>Mi`
### CPU Request
- **Variable:** `resources.requests.cpu`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~100
- **Type:** String (quantity)
- **Description:** Minimum CPU to reserve
- **Default:** `1000m` (1 core)
- **Format:** `<number>m` (millicores) or `<number>` (cores)
### CPU Limit
- **Variable:** `resources.limits.cpu`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~103
- **Type:** String (quantity)
- **Description:** Maximum CPU allowed
- **Default:** `4000m` (4 cores)
- **Format:** `<number>m` (millicores) or `<number>` (cores)
### Storage Size
- **Variable:** `storage` (under volumeClaimTemplates)
- **File:** `k8s/statefulset.yaml`
- **Line:** ~120
- **Type:** String (quantity)
- **Description:** Size of home directory PVC
- **Default:** `10Gi`
- **Format:** `<number>Gi` or `<number>Ti`
### Happy Server URL
- **Variable:** `happy-server-url`
- **File:** `k8s/configmap.yaml`
- **Line:** ~12 (commented)
- **Type:** String (URL)
- **Description:** Custom Happy Coder server
- **Default:** `https://api.cluster-fluster.com`
- **When to set:** Self-hosted Happy instance only
### Happy Webapp URL
- **Variable:** `happy-webapp-url`
- **File:** `k8s/configmap.yaml`
- **Line:** ~13 (commented)
- **Type:** String (URL)
- **Description:** Custom Happy Coder webapp
- **Default:** `https://app.happy.engineering`
- **When to set:** Self-hosted Happy instance only
### Display Width
- **Variable:** `DISPLAY_WIDTH`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~56
- **Type:** String (number)
- **Description:** VNC display width in pixels
- **Default:** `1920`
### Display Height
- **Variable:** `DISPLAY_HEIGHT`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~58
- **Type:** String (number)
- **Description:** VNC display height in pixels
- **Default:** `1080`
### User ID
- **Variable:** `USER_ID`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~51
- **Type:** String (number)
- **Description:** UID for claude user
- **Default:** `1000`
### Group ID
- **Variable:** `GROUP_ID`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~53
- **Type:** String (number)
- **Description:** GID for claude user
- **Default:** `1000`
### StatefulSet Replicas
- **Variable:** `replicas`
- **File:** `k8s/statefulset.yaml`
- **Line:** ~21
- **Type:** Integer
- **Description:** Number of container instances
- **Default:** `1`
- **Note:** Each replica gets own home PVC
## Environment Variables (Runtime)
These are set at runtime, not in configuration files:
### GITHUB_REPO
- **Type:** String (URL)
- **Description:** Repository URL (from ConfigMap)
- **Required:** Yes
- **Source:** ConfigMap `antigravity.github-repo`
### GITHUB_TOKEN
- **Type:** String
- **Description:** GitHub PAT (from Secret)
- **Required:** No (only for private repos)
- **Source:** Secret `antigravity.github-token`
### VNC_PASSWORD
- **Type:** String
- **Description:** VNC password (from Secret)
- **Required:** No
- **Source:** Secret `antigravity.vnc-password`
### HAPPY_SERVER_URL
- **Type:** String (URL)
- **Description:** Happy server URL (from ConfigMap)
- **Required:** No
- **Source:** ConfigMap `antigravity.happy-server-url`
### HAPPY_WEBAPP_URL
- **Type:** String (URL)
- **Description:** Happy webapp URL (from ConfigMap)
- **Required:** No
- **Source:** ConfigMap `antigravity.happy-webapp-url`
### HAPPY_HOME_DIR
- **Type:** String (path)
- **Description:** Happy data directory
- **Required:** No
- **Default:** `/home/claude/.happy`
- **Source:** Hardcoded in StatefulSet
### HAPPY_EXPERIMENTAL
- **Type:** String (boolean)
- **Description:** Enable Happy experimental features
- **Required:** No
- **Default:** `true`
- **Source:** Hardcoded in StatefulSet
## Variable Groups by Use Case
### Minimal Deployment
Only these variables are required for basic deployment:
1. `storageClassName`
2. `github-repo`
3. `parentRefs.name`
4. `parentRefs.namespace`
5. `hostnames`
### Private Repository Deployment
Add these for private repos:
1. All minimal deployment variables
2. `github-token` (sealed secret)
### Production Deployment
Recommended for production:
1. All private repository variables
2. `vnc-password` (sealed secret)
3. `resources.requests.*` (adjusted for workload)
4. `resources.limits.*` (adjusted for workload)
5. `namespace` (dedicated namespace)
### Multi-User Deployment
For multiple users:
1. All production deployment variables
2. `replicas` (set to number of users)
3. Larger `storage` size for home PVCs
## Quick Copy Templates
### Minimal Required Variables
```yaml
# k8s/statefulset.yaml
storageClassName: "CHANGE_ME" # Line ~117
# k8s/configmap.yaml
github-repo: "CHANGE_ME" # Line ~9
# k8s/httproute.yaml
parentRefs:
- name: CHANGE_ME # Line ~8
namespace: CHANGE_ME # Line ~9
hostnames:
- "CHANGE_ME" # Line ~11
```
### With Secrets
```bash
kubectl create secret generic antigravity-secrets \
--from-literal=github-token='CHANGE_ME' \
--from-literal=vnc-password='CHANGE_ME' \
--dry-run=client -o yaml | \
kubeseal --format=yaml > k8s/sealedsecrets.yaml
```
### With Resource Adjustments
```yaml
# k8s/statefulset.yaml (lines ~98-103)
resources:
requests:
memory: "CHANGE_ME" # e.g., 4Gi
cpu: "CHANGE_ME" # e.g., 2000m
limits:
memory: "CHANGE_ME" # e.g., 16Gi
cpu: "CHANGE_ME" # e.g., 8000m
```