此平台不支持 LocalDB [英] LocalDB is not supported on this Platform

问题描述

我正在尝试在 Ubuntu 17.04 上启动 .Net Core 2.0 应用程序.我之前在 Windows 10 上开发过它，效果很好.问题是当我运行 dotnet ef database update 时，我得到了下一个异常:

I'm trying to launch .Net Core 2.0 application on Ubuntu 17.04. I developed it on Windows 10 before and it works well. The problem is that when I run dotnet ef database update I get the next exception:

System.PlatformNotSupportedException: LocalDB is not supported on this Platform.

这是我的DbContext:

public class NutritionContext : DbContext
{
    public DbSet<User> Users { get; set; }
    public DbSet<Meal> Meals { get; set; }
    public DbSet<Dish> Dishes { get; set; }
    public DbSet<Product> Products { get; set; }
    public DbSet<Plan> Plans { get; set; }
    public DbSet<MealDish> MealDishes { get; set; }
    public DbSet<Ingredient> Ingredients { get; set; }
    public DbSet<PlanDetail> PlanDetails { get; set; }
    public DbSet<UserPlan> UserPlans { get; set; }
    public DbSet<AuthUser> AuthUsers { get; set; }

    public NutritionContext()
    {
    }

    public NutritionContext(DbContextOptions options) : base(options)
    {           
    }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlServer(
            "Server=(localdb)\mssqllocaldb;Database=NutritionDatabaseNew;Trusted_Connection=True;MultipleActiveResultSets=true");
    }

}

你知道这可能是什么原因吗?

Do you know what could be the reason of it?

推荐答案

LocalDb 是 SQL Server Express Edition 的打包机制，仅适用于 Windows.在 Ubuntu 上，您可以安装常规的 SQL Server Express Edition.

LocalDb is a packaging mechanism for SQL Server Express Edition, and is only available for Windows. On Ubuntu you can install regular SQL Server Express Edition.

https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-overview

这里是 Ubuntu 的安装脚本, 红帽 和 SUSE.

或者使用 Docker 镜像:

Or use the Docker Images:

https://docs.microsoft.com/en-us/sql/linux/quickstart-install-connect-docker

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