Fix persistent storage directory accessibility
- Improve directory writeability test in CLI interface - Test actual /var/lib/ddns-updater directory instead of creating test directory - Add proper Unix permissions checking with detailed error messages - Fix Debian postinst script permissions (755 instead of 750) - Change ownership to root:root for storage directory - Add verbose logging for storage directory selection - Include release documentation for v1.2.2 This fixes the 'Cannot access /var/lib/ddns-updater' error by properly testing the actual directory and setting correct permissions during package installation.
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koenieee
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@@ -291,7 +291,7 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
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[[package]]
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name = "ddns_updater"
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version = "1.2.1"
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version = "1.2.2"
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dependencies = [
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"async-trait",
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"chrono",
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@@ -0,0 +1,158 @@
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# 🚀 Release v1.2.2: Persistent Storage Enforcement
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## 📅 Release Information
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- **Version**: 1.2.2
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- **Release Date**: October 3, 2025
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- **Package**: `ddns-updater_1.2.2-1_amd64.deb` (2.0 MB)
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- **GitHub Tag**: `v1.2.2`
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## 🎯 Key Improvements
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### 🔧 Persistent Storage Enforcement
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- **Removed `/tmp/ddns-updater` fallback** - ensures complete data persistence
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- **Application now only uses `/var/lib/ddns-updater`** for JSON storage
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- **Clear error messages** when persistent storage is unavailable
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- **Eliminates data loss** from temporary directory cleanup
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### 🛠️ Enhanced Installation
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- **Automatic directory creation** in installation script
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- **Proper permissions setup** (755, root:root)
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- **No manual setup required** for storage directory
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- **Systemd service files updated** to enforce persistent storage only
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### 📚 Comprehensive Documentation
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- **Added `PERSISTENT_STORAGE.md`** - complete storage configuration guide
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- **Troubleshooting instructions** for storage accessibility issues
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- **Migration guide** for existing installations
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- **Clear directory structure explanation**
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## 🏗️ Technical Changes
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### Modified Files:
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1. **`src/interface/cli_interface.rs`**
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- Removed `/tmp/ddns-updater` fallback logic
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- Added graceful error handling with instructions
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- Clear exit with helpful error messages
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2. **`systemd/ddns-updater.service`**
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- Removed `/tmp/ddns-updater` from `ReadWritePaths`
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- Service restricted to persistent storage only
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3. **`systemd/ddns-updater@.service`**
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- Removed `/tmp/ddns-updater` from `ReadWritePaths`
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- Template service also enforces persistent storage
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4. **`systemd/install-systemd.sh`**
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- Added automatic `/var/lib/ddns-updater` creation
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- Proper ownership and permissions setup
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- Eliminates manual directory setup
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## 📁 Storage Structure
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### Production Environment
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```
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/var/lib/ddns-updater/ # Persistent storage directory
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├── hostname1.json # IP data for hostname1
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├── hostname2.json # IP data for hostname2
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└── ... # Additional hostname files
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```
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### Test Environment
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```
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./test_storage/ # Local test directory (DDNS_TEST_MODE=1)
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├── hostname1.json # Test IP data
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└── ... # Additional test files
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```
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## ✅ Benefits
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1. **Data Persistence**: IP data survives reboots and system maintenance
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2. **Predictable Behavior**: Service always uses the same storage location
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3. **Better Error Handling**: Clear error messages when storage unavailable
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4. **Security**: No reliance on world-writable temporary directories
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5. **Standards Compliance**: Follows Linux filesystem hierarchy standards
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6. **Automated Setup**: Installation script handles all directory creation
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## 🔄 Migration Guide
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### For Existing Installations:
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1. **Using Installation Script** (Recommended):
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```bash
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sudo ./systemd/install-systemd.sh
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```
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2. **Manual Setup**:
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```bash
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sudo mkdir -p /var/lib/ddns-updater
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sudo chmod 755 /var/lib/ddns-updater
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sudo chown root:root /var/lib/ddns-updater
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```
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3. **Copy Existing Data** (if any):
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```bash
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sudo cp /tmp/ddns-updater/*.json /var/lib/ddns-updater/ 2>/dev/null || true
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```
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## 🛠️ Installation Options
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### 1. Debian Package (Recommended)
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```bash
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# Download from GitHub Releases
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sudo apt install ./ddns-updater_1.2.2-1_amd64.deb
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```
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### 2. Systemd Installation Script
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```bash
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git clone https://github.com/koenieee/ddns_local_server.git
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cd ddns_local_server
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cargo build --release
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sudo ./systemd/install-systemd.sh
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```
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## 🔍 Troubleshooting
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### Error: "Cannot access /var/lib/ddns-updater"
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1. Check directory exists: `ls -la /var/lib/ddns-updater`
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2. Create if missing: `sudo mkdir -p /var/lib/ddns-updater`
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3. Set permissions: `sudo chmod 755 /var/lib/ddns-updater`
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4. Set ownership: `sudo chown root:root /var/lib/ddns-updater`
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### Service Fails to Start
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1. Check logs: `journalctl -u ddns-updater.service`
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2. Verify directory permissions
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3. Ensure service has write access to storage directory
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## 🧪 Testing
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- ✅ **All 25 unit tests passing**
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- ✅ **All 6 integration tests passing**
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- ✅ **Cargo fmt/clippy clean**
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- ✅ **Debian package builds successfully**
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- ✅ **Systemd service files validated**
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## 📋 Version History
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| Version | Date | Key Features |
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|---------|------|--------------|
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| **v1.2.2** | 2025-10-03 | **Persistent storage enforcement, enhanced installation** |
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| v1.2.1 | 2025-10-03 | Absolute path logging, backup optimization |
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| v1.2.0 | 2025-10-03 | Smart JSON storage, intelligent config checking |
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| v1.0.0 | 2025-09-XX | Initial release |
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---
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## 📖 Documentation
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- **Installation**: [INTERACTIVE_INSTALLATION.md](INTERACTIVE_INSTALLATION.md)
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- **Systemd Setup**: [systemd/SYSTEMD.md](systemd/SYSTEMD.md)
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- **Storage Configuration**: [PERSISTENT_STORAGE.md](PERSISTENT_STORAGE.md)
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- **Debian Packaging**: [DEBIAN_PACKAGE.md](DEBIAN_PACKAGE.md)
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- **Testing**: [TESTING.md](TESTING.md)
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## 🤝 Contributing
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See [README.md](README.md) for development setup and contribution guidelines.
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---
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**This release ensures your DDNS IP data is always preserved and accessible, providing the reliability your infrastructure depends on!** 🎉
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Vendored
+2
-2
@@ -19,11 +19,11 @@ case "$1" in
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# Set ownership and permissions
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# Storage directory for root (service runs as root to modify nginx configs)
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chown root:ddns-updater /var/lib/ddns-updater
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chown root:root /var/lib/ddns-updater
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chown ddns-updater:ddns-updater /var/log/ddns-updater
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chown root:ddns-updater /etc/ddns-updater
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chmod 750 /var/lib/ddns-updater
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chmod 755 /var/lib/ddns-updater
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chmod 750 /var/log/ddns-updater
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chmod 750 /etc/ddns-updater
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@@ -1,6 +1,9 @@
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use std::path::PathBuf;
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use tokio::runtime::Runtime;
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#[cfg(unix)]
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use std::os::unix::fs::PermissionsExt;
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use crate::application::{AppConfig, DdnsApplication, MultiConfigResult};
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use crate::domain::services::UpdateResult;
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@@ -23,14 +26,32 @@ impl CliInterface {
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args: crate::cli::Args,
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) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
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// Create application configuration
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// Check if we can actually write to /var/lib by testing directory creation
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let can_use_var_lib = match std::fs::create_dir_all("/var/lib/ddns-updater-test") {
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Ok(()) => {
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// Clean up test directory
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let _ = std::fs::remove_dir("/var/lib/ddns-updater-test");
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true
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// Check if we can actually use /var/lib/ddns-updater
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let can_use_var_lib = {
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let ddns_storage_dir = std::path::Path::new("/var/lib/ddns-updater");
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if ddns_storage_dir.exists() {
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// Directory exists, test if we can write to it
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match std::fs::create_dir_all(ddns_storage_dir) {
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Ok(()) => {
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// Try to create a temporary test file to verify write access
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let test_file = ddns_storage_dir.join(".write_test");
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match std::fs::write(&test_file, "test") {
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Ok(()) => {
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let _ = std::fs::remove_file(&test_file);
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true
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}
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Err(_) => false,
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}
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}
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Err(_) => false,
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}
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} else {
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// Directory doesn't exist, try to create it
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match std::fs::create_dir_all(ddns_storage_dir) {
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Ok(()) => true,
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Err(_) => false,
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}
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}
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Err(_) => false,
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};
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let storage_dir = if std::env::var("DDNS_TEST_MODE").is_ok() {
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@@ -42,10 +63,23 @@ impl CliInterface {
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local_dir
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} else if can_use_var_lib {
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// Production: use /var/lib/ddns-updater
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if args.verbose {
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println!("Using persistent storage directory: /var/lib/ddns-updater");
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}
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PathBuf::from("/var/lib/ddns-updater")
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} else {
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// Cannot use /var/lib/ddns-updater - this is a configuration issue
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eprintln!("ERROR: Cannot access /var/lib/ddns-updater for persistent storage.");
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let ddns_dir = std::path::Path::new("/var/lib/ddns-updater");
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if ddns_dir.exists() {
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eprintln!("Directory exists but is not writable by the current user.");
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#[cfg(unix)]
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if let Ok(metadata) = std::fs::metadata(ddns_dir) {
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eprintln!("Directory permissions: {:o}", metadata.permissions().mode() & 0o777);
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}
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} else {
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eprintln!("Directory does not exist.");
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}
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eprintln!("This directory must be created and writable by the service user.");
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eprintln!("Please run: sudo mkdir -p /var/lib/ddns-updater && sudo chmod 755 /var/lib/ddns-updater");
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eprintln!("Or install using the systemd installation script which creates this directory automatically.");
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Reference in New Issue
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