start corrosion service even when machine is not initialised to be able to init cluster

internal/machine/corroservice/service.go

@@ -2,4 +2,6 @@ package corroservice
 
 type Service interface {
 	Start() error
+	Restart() error
+	Running() bool
 }

internal/machine/corroservice/systemd.go

@@ -11,6 +11,7 @@ const DefaultSystemdUnit = "uncloud-corrosion.service"
 type SystemdService struct {
 	DataDir string
 	Unit    string
+	running bool
 }
 
 func DefaultSystemdService(dataDir string) *SystemdService {
@@ -25,5 +26,23 @@ func (s *SystemdService) Start() error {
 		return fmt.Errorf("systemctl start %s: %w", s.Unit, err)
 	}
 	slog.Info("Corrosion systemd service started.", "unit", s.Unit)
+
+	// TODO: run a goroutine to check the status of the service and log any errors in the uncloud log.
+	s.running = true
 	return nil
 }
+
+func (s *SystemdService) Restart() error {
+	if _, err := exec.Command("systemctl", "restart", s.Unit).Output(); err != nil {
+		return fmt.Errorf("systemctl restart %s: %w", s.Unit, err)
+	}
+	slog.Info("Corrosion systemd service restarted.", "unit", s.Unit)
+
+	// TODO: run a goroutine to check the status of the service and log any errors in the uncloud log.
+	s.running = true
+	return nil
+}
+
+func (s *SystemdService) Running() bool {
+	return s.running
+}