asp core ef migrations on production server

You can generate a migration script by running the following command:

Script-Migration -From older_migration_name -To newer_migration_name -Context ApplicationDbContext

The script will have a random name and will reside in the following path:

<Your_Project_Drive>:\<Your_Project_Folder>\<Your_Project_Folder.Model>\obj\Debug\netcoreapp3.1\<Some_Random_Name>.sql

Now just run that script on the targeted DB of production server.

There are a couple options:

1. Generate a SQL script using dotnet ef migrations script and run it on your production database.
2. Call dbContext.Database.Migrate() at runtime during application startup (but be careful when running multiple apps/database clients)

Also, in the next release (1.0.0-preview3) of Microsoft.EntityFrameworkCore.Tools, we'll be shipping ef.exe which you can point directly to assemblies (instead of project.json files) to perform migrations.