var datastore = _MainDBContext.datastores.FirstOrDefault(x=>x.db_type=="MS");
        string connectionString = @"Server=" + datastore.db_instance_ip + ";Port=3306;Database=" + datastore.db_name + ";Uid=" + datastore.db_user + ";Password=" + datastore.db_pass + ";";
        optionsBuilder.UseMySQL(connectionString);
        _cmsDBContext = new CmsDBContext(optionsBuilder.Options);
        _cmsDBContext.Database.Migrate();