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Fix port conflict: separate Next.js (3001) from Go API (PORT)

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- Next.js admin now runs on internal port 3001
- Go API uses Dokku's PORT environment variable (5000)
- Updated admin proxy default to localhost:3001
- Added /_next/* static asset proxy route

This fixes the "address already in use" error when deploying to Dokku
where both services were trying to bind to port 3000.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Trey t
2025-11-29 11:12:26 -06:00
parent d166df00e9
commit 8022e03246
3 changed files with 78 additions and 108 deletions
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164
docs/DOKKU_SETUP.md
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@@ -10,12 +10,12 @@ This guide provides step-by-step instructions for deploying the Casera Go API to
4. [Create the App](#create-the-app)
5. [Configure PostgreSQL](#configure-postgresql)
6. [Configure Redis](#configure-redis)
7. [Configure Gorush (Push Notifications)](#configure-gorush-push-notifications)
8. [Set Environment Variables](#set-environment-variables)
9. [Configure Storage](#configure-storage)
10. [Deploy the Application](#deploy-the-application)
11. [Configure SSL](#configure-ssl)
12. [Set Up Worker Process](#set-up-worker-process)
7. [Set Environment Variables](#set-environment-variables)
8. [Configure Storage](#configure-storage)
9. [Deploy the Application](#deploy-the-application)
10. [Configure SSL](#configure-ssl)
11. [Set Up Worker Process](#set-up-worker-process)
12. [Push Notifications (Optional)](#push-notifications-optional)
13. [Maintenance Commands](#maintenance-commands)
14. [Troubleshooting](#troubleshooting)
@@ -198,85 +198,6 @@ dokku redis:info casera-redis
---
## Configure Gorush (Push Notifications)
Gorush handles push notifications for iOS (APNs) and Android (FCM).
### 1. Create Gorush App
```bash
dokku apps:create gorush
```
### 2. Create Certificate Storage Directory
```bash
# Create directory on server
mkdir -p /var/lib/dokku/data/storage/gorush/certs
# Set permissions (Dokku container user)
chown -R 32767:32767 /var/lib/dokku/data/storage/gorush
```
### 3. Copy APNs Key to Server
From your **local machine**:
```bash
scp /path/to/AuthKey_XXXXXX.p8 root@your-server:/var/lib/dokku/data/storage/gorush/certs/apns_key.p8
```
### 4. Mount Certificate Directory
```bash
dokku storage:mount gorush /var/lib/dokku/data/storage/gorush/certs:/certs:ro
```
### 5. Deploy Gorush
```bash
dokku git:from-image gorush appleboy/gorush:latest
```
### 6. Configure Gorush Environment
```bash
dokku config:set gorush \
GORUSH_CORE_PORT=8080 \
GORUSH_IOS_ENABLED=true \
GORUSH_IOS_KEY_PATH=/certs/apns_key.p8 \
GORUSH_IOS_KEY_ID=XXXXXXXXXX \
GORUSH_IOS_TEAM_ID=XXXXXXXXXX \
GORUSH_IOS_TOPIC=com.yourcompany.casera \
GORUSH_IOS_PRODUCTION=true \
GORUSH_ANDROID_ENABLED=true \
GORUSH_ANDROID_APIKEY=your-firebase-server-key
```
### 7. Set Proxy Port
```bash
dokku proxy:ports-set gorush http:80:8080
```
### 8. Restart Gorush
```bash
dokku ps:restart gorush
```
### 9. Verify Gorush is Running
```bash
# Check status
dokku ps:report gorush
# Check logs
dokku logs gorush
```
---
## Set Environment Variables
### 1. Required Variables
@@ -310,14 +231,30 @@ dokku config:set casera-api \
APPLE_TEAM_ID=V3PF3M6B6U
```
### 4. Admin Panel URL
### 4. Push Notifications (Optional)
```bash
dokku config:set casera-api \
GORUSH_CORE_PORT=8080 \
GORUSH_IOS_ENABLED=true \
GORUSH_IOS_KEY_PATH=/push_certs/AuthKey_R9N3SM2WD5.p8 \
GORUSH_IOS_KEY_ID=R9N3SM2WD5 \
GORUSH_IOS_TEAM_ID=V3PF3M6B6U \
GORUSH_IOS_TOPIC=com.tt.casera.CaseraDev \
GORUSH_IOS_PRODUCTION=true \
GORUSH_ANDROID_ENABLED=false
```
// GORUSH_ANDROID_APIKEY=your-firebase-server-key
### 5. Admin Panel URL
```bash
dokku config:set casera-api \
NEXT_PUBLIC_API_URL=https://api.casera.treytartt.com
```
### 5. View All Configuration
### 6. View All Configuration
```bash
dokku config:show casera-api
@@ -343,22 +280,6 @@ chown -R 32767:32767 /var/lib/dokku/data/storage/casera-api
dokku storage:mount casera-api /var/lib/dokku/data/storage/casera-api/uploads:/app/uploads
```
### 3. For Push Notification Certificates
```bash
# Create certs directory
mkdir -p /var/lib/dokku/data/storage/casera-api/certs
# Copy your APNs key file
scp /local/path/to/AuthKey_XXXXXX.p8 root@your-server:/var/lib/dokku/data/storage/casera-api/certs/apns_key.p8
# Mount certs directory
dokku storage:mount casera-api /var/lib/dokku/data/storage/casera-api/certs:/certs:ro
# Set the path in config
dokku config:set casera-api APNS_AUTH_KEY_PATH=/certs/apns_key.p8
```
---
## Deploy the Application
@@ -445,6 +366,43 @@ dokku ps:report casera-api
---
#### 7. Set Proxy Port
```bash
dokku proxy:ports-set gorush http:80:8080
```
#### 8. Restart Gorush
```bash
dokku ps:restart gorush
```
#### 9. Configure Casera API to Use Gorush
```bash
dokku config:set casera-api GORUSH_URL=http://gorush.web:8080
```
#### 10. Verify Gorush is Running
```bash
# Check status
dokku ps:report gorush
# Check logs
dokku logs gorush
# Test health endpoint (if you have a domain set)
curl http://gorush.yourdomain.com/api/stat/go
```
### Option B: Use External Push Service
Configure the app to use an external push notification service instead.
---
## Maintenance Commands
### View Logs

10
internal/admin/routes.go
View File

@@ -359,10 +359,11 @@ func SetupRoutes(router *gin.Engine, db *gorm.DB, cfg *config.Config, deps *Depe
// setupAdminProxy configures reverse proxy to the Next.js admin panel
func setupAdminProxy(router *gin.Engine) {
// Get admin panel URL from env, default to localhost:3000
// Get admin panel URL from env, default to localhost:3001
// Note: In production (Dokku), Next.js runs on internal port 3001
adminURL := os.Getenv("ADMIN_PANEL_URL")
if adminURL == "" {
adminURL = "http://127.0.0.1:3000"
adminURL = "http://127.0.0.1:3001"
}
target, err := url.Parse(adminURL)
@@ -381,4 +382,9 @@ func setupAdminProxy(router *gin.Engine) {
router.Any("/admin", func(c *gin.Context) {
c.Redirect(http.StatusMovedPermanently, "/admin/")
})
// Proxy Next.js static assets
router.Any("/_next/*filepath", func(c *gin.Context) {
proxy.ServeHTTP(c.Writer, c.Request)
})
}

12
start.sh
View File

@@ -11,8 +11,12 @@ if [ ! -f server.js ]; then
exit 1
fi
echo "Starting Next.js admin on :3000..."
HOSTNAME="0.0.0.0" PORT=3000 NODE_ENV=production node server.js &
# Save the main PORT for Go API (Dokku sets this)
API_PORT="${PORT:-5000}"
# Start Next.js admin on internal port 3001
echo "Starting Next.js admin on :3001..."
HOSTNAME="0.0.0.0" PORT=3001 NODE_ENV=production node server.js &
NODE_PID=$!
# Give Next.js a moment to boot
@@ -24,5 +28,7 @@ if ! kill -0 "$NODE_PID" 2>/dev/null; then
exit 1
fi
echo "Starting Go API on :${PORT:-5000}..."
# Start Go API on main PORT that Dokku expects
echo "Starting Go API on :${API_PORT}..."
export PORT="${API_PORT}"
exec /app/api