v1.0.8: Add configurable log level and immediate service stop

- Add log_level config option (debug, info, warn, error)
- Add JA4SENTINEL_LOG_LEVEL environment variable support
- Set TimeoutStopSec=2 for immediate stop on restart/stop
- Consolidate config files into single example (config.yml.example)
- Update RPM changelog

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

cmd/ja4sentinel/main.go

@@ -22,7 +22,7 @@ import (
 
 var (
 	// Version information (set via ldflags)
-	Version   = "1.0.7"
+	Version   = "1.0.8"
 	BuildTime = "unknown"
 	GitCommit = "unknown"
 )
@@ -38,9 +38,22 @@ func main() {
 		os.Exit(0)
 	}
 
-	// Create logger factory
+	// Load configuration
+	cfgLoader := config.NewLoader(*configPath)
+	appConfig, err := cfgLoader.Load()
+	if err != nil {
+		// Create logger with default level for error reporting
+		loggerFactory := &logging.LoggerFactory{}
+		appLogger := loggerFactory.NewDefaultLogger()
+		appLogger.Error("main", "Failed to load configuration", map[string]string{
+			"error": err.Error(),
+		})
+		os.Exit(1)
+	}
+
+	// Create logger factory with configured log level
 	loggerFactory := &logging.LoggerFactory{}
-	appLogger := loggerFactory.NewDefaultLogger()
+	appLogger := loggerFactory.NewLogger(appConfig.Core.LogLevel)
 
 	appLogger.Info("main", "Starting ja4sentinel", map[string]string{
 		"version":    Version,
@@ -48,19 +61,10 @@ func main() {
 		"git_commit": GitCommit,
 	})
 
-	// Load configuration
-	cfgLoader := config.NewLoader(*configPath)
-	appConfig, err := cfgLoader.Load()
-	if err != nil {
-		appLogger.Error("main", "Failed to load configuration", map[string]string{
-			"error": err.Error(),
-		})
-		os.Exit(1)
-	}
-
 	appLogger.Info("main", "Configuration loaded", map[string]string{
 		"interface":    appConfig.Core.Interface,
 		"listen_ports": formatPorts(appConfig.Core.ListenPorts),
+		"log_level":    appConfig.Core.LogLevel,
 	})
 
 	// Create context with cancellation for graceful shutdown