./cmd install 初始化数据库失败

[ZhangBoshuai]

环境 :

1.  CentOS Stream release 8 
2. Linux 4.18.0-513.el8.x86_64
3. x86-64

详细错误如下:

   Illuminate\Database\QueryException 

  SQLSTATE[HY000] [2002] Connection refused (SQL: select * from information_schema.tables where table_schema = dootask and table_name = pre_migrations and table_type = 'BASE TABLE')

  at vendor/laravel/framework/src/Illuminate/Database/Connection.php:712
    708▕         // If an exception occurs when attempting to run a query, we'll format the error
    709▕         // message to include the bindings with SQL, which will make this exception a
    710▕         // lot more helpful to the developer instead of just the database's errors.
    711▕         catch (Exception $e) {
  ➜ 712▕             throw new QueryException(
    713▕                 $query, $this->prepareBindings($bindings), $e
    714▕             );
    715▕         }
    716▕     }

      +36 vendor frames 
  37  artisan:37
      Illuminate\Foundation\Console\Kernel::handle()
[错误]  数据库安装失败! 

求救