安装 Consul的服务,这里安装单机版的,集群版配置最低要求(3个Consul server)的需要三台虚拟机,穷
这是下载地址 Consul 我这里部署的是CentOS7 ip是:192.168.31.140 记得关闭防火墙
yum instarll wget -y
yum instarll unzip -y
wget https://releases.hashicorp.com/consul/1.7.2/consul_1.7.2_linux_amd64.zip
unzip consul_1.7.2_linux_amd64.zip
mv consul /usr/local/bin/
consul -v 查看图一代表安装成功了
nohup consul agent -server -ui -bootstrap-expect=1 -data-dir=/tmp/consul -node=consul-1 -client=0.0.0.0 -datacenter=dc1 & 后台启动会生成一个nohup.out的日子文件
curl http://127.0.0.1:8500/ui/dc1/services 访问 如下图二代表服务启动OK
consul可以通过配置文件注册服务,我这里用的是api代码注册
配置文件注册vi /etc/consul/services_config.json创建配置文件重启即可
接下来写ServiceUser的服务,选择asp.net core Api模板创建项目,安装Consul包
在写一个服务注册的方法在Startup.cs里,ip和port及id我是从命令行获取的其他配置均写在配置文件里
private static void ServiceRegister(IConfiguration configuration)
{
ConsulClient client = new ConsulClient(new Action(t => {
t.Address = new Uri(configuration["consul:servicesAddr"]);//这是Consul的服务地址192.168.31.140
t.Datacenter = configuration["consul:datacenter"];//储存名
}));
//注册一个实例
var result = client.Agent.ServiceRegister(new AgentServiceRegistration()
{
Address = configuration["ip"], //注册服务的IP
ID = $"{configuration["consul:serviceName"]}{configuration["id"]}",//服务id唯一的
Name = configuration["consul:serviceName"],//服务名
Port = Convert.ToInt32(configuration["port"]),//端口
Tags = null,
Check = new AgentServiceCheck()
{
HTTP = $"http://{configuration["ip"]}:{configuration["port"]}{configuration["consul:healthCheck"]}",//健康检查的API地址
Interval = new TimeSpan(0, 0, 10),//间隔多少检查一次
DeregisterCriticalServiceAfter = new TimeSpan(0, 1, 0) //多久注销不健康的服务
}
}).Result;
}
new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddCommandLine(args).Build();
编写配置文件
"consul": {
"servicesAddr": "http://192.168.31.140:8500",
"datacenter": "dr1",
"serviceName": "ServiceCommodity",
"healthCheck": "/api/Health"
}
ServiceCommodity和ServiceUser一样
接下来启动实例注册服务,我这里用端口区分不同的实例
dotnet ServiceCommodity.dll --urls http://*:5000 --environment Development --ip 192.168.31.137 --port 5000 --id 1
dotnet ServiceCommodity.dll --urls http://*:5001 --environment Development --ip 192.168.31.137 --port 5001 --id 2
dotnet ServiceCommodity.dll --urls http://*:5002 --environment Development --ip 192.168.31.137 --port 5002 --id 3
dotnet ServiceUser.dll --urls http://*:6000 --environment Development --ip 192.168.31.137 --port 6000 --id 1
dotnet ServiceUser.dll --urls http://*:6001 --environment Development --ip 192.168.31.137 --port 6001 --id 2
dotnet ServiceUser.dll --urls http://*:6002 --environment Development --ip 192.168.31.137 --port 6002 --id 3
接下来注册Ocelot网关,微服务是离不开网关的,现在可能看不出网关的效果,Consul搭建成集群就能看出效果了
创建一个空的web项目安装如下两个包
创建ocelot.json配置文件
{
"ReRoutes": [
{
"DownstreamPathTemplate": "/api/{controller}",//你的api路径
"DownstreamScheme": "http",
"UpstreamPathTemplate": "/dust/{controller}",//你映射的路径
"UpstreamHttpMethod": [ "get", "post" ],//请求方法
"ServiceName": "ServiceCommodity",//你的服务名称
"LoadBalancerOptions": {
"Type": "LeastConnection"//ocelot提供了几种均衡方法,这里用的是最小连接
}
},
{
"DownstreamPathTemplate": "/api/{controller}",
"DownstreamScheme": "http",
"UpstreamPathTemplate": "/dust1/{controller}",
"UpstreamHttpMethod": [ "get", "post" ],
"ServiceName": "ServiceUser",
"LoadBalancerOptions": {
"Type": "LeastConnection"
}
}
],
"GlobalConfiguration": {
"ServiceDiscoveryProvider": {
"Host": "192.168.31.140",//你的Consul的ip地址
"Port": 8500,//你的Consul的端口
"ConfigurationKey": "Consul"//指定Consul,ocelot提供了几种,可以去官网看看
}
}
}
加载配置文件
.ConfigureAppConfiguration((hostingContext, config) =>
{
config
.SetBasePath(hostingContext.HostingEnvironment.ContentRootPath)
.AddJsonFile("appsettings.json", true, true)
.AddJsonFile($"appsettings.{hostingContext.HostingEnvironment.EnvironmentName}.json", true, true)
.AddJsonFile("ocelot.json")
.AddEnvironmentVariables();
})
启动 dotnet GateWayOcelot.dll --urls http://*:7000
string[] userAry = null;
string[] commodityAry = null;
using (HttpClient httpClient = new HttpClient())
{
HttpResponseMessage httpResponseMessage = httpClient.GetAsync("http://192.168.31.137:7000/dust1/user").Result;
userAry = JsonConvert.DeserializeObject(httpResponseMessage.Content.ReadAsStringAsync().Result);
}
using (HttpClient httpClient = new HttpClient())
{
HttpResponseMessage httpResponseMessage = httpClient.GetAsync("http://192.168.31.137:7000/dust/commodity").Result;
commodityAry = JsonConvert.DeserializeObject(httpResponseMessage.Content.ReadAsStringAsync().Result);
}
this.ViewBag.msgText = $"{userAry[0]}和{userAry[1]}讨论项目,去烧烤摊点了{commodityAry[0]},{commodityAry[1]},{commodityAry[2]},第二天凌晨5点两个人支起了早餐摊!";
到此一个简单的微服务OK了
Demo下载地址:https://github.com/Xiao-Dust/MicroService
往期精彩回顾
.netcore consul实现服务注册与发现(一)单机部署
.netcore consul实现服务注册与发现(二)集群完整版
基于Docker的Consul服务发现集群搭建
Ocelot简易教程(五)之集成IdentityServer认证以及授权
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