consul 使用总结 & Nginx 负责均衡，最大连接数据，超时次数，超时等待时间，权重

1. consul agnet -dev 启动consul

2. 启动服务，注册服务：
   dotnet OrderServer.dll --urls="http://:5189" --ip="127.0.0.1“ --port=5189
   dotnet OrderServer.dll --urls="http://:5188" --ip="127.0.0.1“ --port=5188

3.服务注入及健康检查接口：
program.cs:
app.MapGet("/Api/Health/Index", (HttpContext httpContext) =>
{
Console.WriteLine($"This is Health Check");
httpContext.Response.StatusCode = (int)HttpStatusCode.OK;
return "OK";
});
app.Configuration.ConsulRegist();//在进程启动过程完成-且只完成一次.

4.注册服务代码：
ConsulRegist():
public static class ConsulHelper
{
public static void ConsulRegist(this IConfiguration configuration)
{
ConsulClient client = new ConsulClient(c =>
{
c.Address = new Uri("http://localhost:8500/");
c.Datacenter = "dc1";
});//找到consul
string ip = string.IsNullOrWhiteSpace(configuration["ip"]) ? "127.0.0.1" : configuration["ip"];
int port = string.IsNullOrWhiteSpace(configuration["port"]) ? 5726 : int.Parse(configuration["port"]);//命令行参数必须传入
int weight = string.IsNullOrWhiteSpace(configuration["weight"]) ? 1 : int.Parse(configuration["weight"]);
client.Agent.ServiceRegister(new AgentServiceRegistration()
{
ID = "service" + Guid.NewGuid(),
Name = "OrderService",//Group--分组,通过这个方法注册的服务都属于OrderService
Address = ip,//
Port = port,//
Tags = new string[] { weight.ToString() },//标签
Check = new AgentServiceCheck()
{
Interval = TimeSpan.FromSeconds(12),//间隔12s一次
HTTP = $"http://{ip}:{port}/Api/Health/Index",//控制器
Timeout = TimeSpan.FromSeconds(5),//检测等待时间
DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(120)//失败后多久移除
}
});
//命令行参数获取
Console.WriteLine($"注册成功：{ip}:{port}--weight:{weight}");
}
}

--------------Nginx 负责均衡，最大连接数据，超时次数，超时等待时间，权重 -----------------------
1.api：
dotnet OrderServer.dll --urls="http://:5177" --ip="127.0.0.1“ --port=5177
dotnet OrderServer.dll --urls="http://:5177" --ip="127.0.0.1“ --port=5178

2.nginx配置：

代理服务

upstream myserver{
  server 127.0.0.1:5177 max_fails=3 fail_timeout=20s weight=100 max_conns=10;
  server 127.0.0.1:5178 max_fails=3 fail_timeout=20s weight=100 max_conns=10;
}

server {
    listen       8082;
    server_name  localhost;

    location / {
		proxy_next_upstream error timeout invalid_header http_502 http_504 http_404;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header   X-Forwarded-Proto $scheme;
		proxy_connect_timeout 20s;
		proxy_read_timeout 300s;
		proxy_send_timeout 300s;
		proxy_pass http://myserver;
    }

nginx -s reload