虛擬機器的安裝和centos的安裝看博友的文章：https://www.cnblogs.com/zhaopei/p/netcore.html

https://www.centos.org/

centos安裝netcore 步驟

https://dotnet.microsoft.com/learn/dotnet/hello-world-tutorial

centos安裝ngnix步驟

https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-centos-7

dotnet-hosting-2.1.6-win下載：

dotnet -hosting 就是IIS上的AspNetCoreModel模組

https://dotnet.microsoft.com/download/dotnet-core/2.2

SDK包含了Runtime

如果是隻執行不開發的，只安裝Runtime即可

如果core專案部署IIS異常，說明是升級了.NET Core2.0 ，電腦上沒有安裝 dotnet-hosting-2.1.1-win.exe

參考:https://www.cnblogs.com/w2011/p/9229111.html