SSH认证支持sudo

internal/installers/installer_base.go

@@ -94,7 +94,13 @@ func (this *BaseInstaller) Login(credentials *Credentials) error {
 	if err != nil {
 		return err
 	}
+
+	if credentials.Sudo {
+		client.Sudo(credentials.Password)
+	}
+
 	this.client = client
+
 	return nil
 }
 
@@ -146,6 +152,10 @@ func (this *BaseInstaller) InstallHelper(targetDir string, role nodeconfigs.Node
 		return env, err
 	}
 
+	if len(uname) == 0 {
+		return nil, errors.New("unable to execute 'uname -a' on this system")
+	}
+
 	osName := ""
 	archName := ""
 	if strings.Contains(uname, "Darwin") {