asp.net core 二 Nginx Supervisor 负载,监听

ASP.NET Core负载均衡集群搭建（CentOS7+Nginx+Supervisor+Kestrel）

asp.net core在linux运行下，一但命令行退出，程序将停止，而且asp.net core的监听以及负载问题将在这里说明

参考连接：http://www.linuxidc.com/Linux/2016-11/136997.htm http://www.sohu.com/a/192683690_468635 https://www.cnblogs.com/ants/p/5732337.html

跨平台是ASP.NET Core一个显著的特性，而KestrelServer是目前微软推出了唯一一个能够真正跨平台的Server。KestrelServer利用一个名为KestrelEngine的网络引擎实现对请求的监听、接收和响应。KetrelServer之所以具有跨平台的特质，源于KestrelEngine是在一个名为libuv的跨平台网络库上开发
Supervisor 实现监听的守护，保证监听在后台持续运行，避免命令行形式
配置Supervisor 为服务，开机启动，这样Supervisor监听的网站就可以开机自动启动
Nginx 负载

在asp.net core项目中，默认使用的是Kestrel Server ,进行请求监听

      public static IWebHost BuildWebHost(string[] args) =>

            WebHost.CreateDefaultBuilder(args)   //这句代码默认使用了Kestrel F12查看源,如下:

                .UseUrls("http://*:8080";)

                .UseStartup<Startup>()

                .Build();

        // 备注:

        //     The following defaults are applied to the returned Microsoft.AspNetCore.Hosting.WebHostBuilder:

        //     use Kestrel as the web server, set the Microsoft.AspNetCore.Hosting.IHostingEnvironment.ContentRootPath

        //     to the result of System.IO.Directory.GetCurrentDirectory, load Microsoft.Extensions.Configuration.IConfiguration

        //     from 'appsettings.json' and 'appsettings.[Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName].json',

        //     load Microsoft.Extensions.Configuration.IConfiguration from User Secrets when

        //     Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName is 'Development'

        //     using the entry assembly, load Microsoft.Extensions.Configuration.IConfiguration

        //     from environment variables, load Microsoft.Extensions.Configuration.IConfiguration

        //     from supplied command line args, configures the Microsoft.Extensions.Logging.ILoggerFactory

        //     to log to the console and debug output, enables IIS integration, enables the

        //     ability for frameworks to bind their options to their default configuration sections,

        //     and adds the developer exception page when Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName

        //     is 'Development'

        public static IWebHostBuilder CreateDefaultBuilder(string[] args);