.net core微服务之consul搭建服务注册

.net core 3.1 + consul 搭建服务注册

1.官网www.consul.io下载consul并安装

2.新建一个webapi项目

NuGet安装包Consul
根目录创建类ConsulHelper

    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";
            });

            string ip = configuration["ip"];
            int port = 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" + port,//唯一的
                Name = "UserService",//组名称-Group   湖人
                Address = ip,//其实应该写ip地址
                Port = port,//不同实例
                Tags = new string[] { weight.ToString() },//标签
                Check = new AgentServiceCheck()
                {
                    Interval = TimeSpan.FromSeconds(12),//间隔12s一次
                    HTTP = $"http://{ip}:{port}/api/health",
                    Timeout = TimeSpan.FromSeconds(5),//检测等待时间
                    DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(20)//失败后多久移除
                }
            });
            //命令行参数获取
            Console.WriteLine($"{ip}:{port}--weight:{weight}");
        }
    }

Startup.cs类中添加这一行

image.png
命令行启动3个实例
dotnet mywebapi.dll --urls=http://:5001 --ip=127.0.0.1 --port=5001
dotnet mywebapi.dll --urls=http://:5002 --ip=127.0.0.1 --port=5002
dotnet mywebapi.dll --urls=http://*:5003 --ip=127.0.0.1 --port=5003

3.可视化查看服务

打开网址http://localhost:8500

image.png