#### 浏览器访问地址：
​​http://localhost:8800​​


#### 使用curl 访问api 接口获取信息

```
/api/providers: GET providers
/api/providers/{provider}: GET or PUT provider
/api/providers/{provider}/backends: GET backends
/api/providers/{provider}/backends/{backend}: GET a backend
/api/providers/{provider}/backends/{backend}/servers: GET servers in a backend
/api/providers/{provider}/backends/{backend}/servers/{server}: GET a server in a backend
/api/providers/{provider}/frontends: GET frontends
/api/providers/{provider}/frontends/{frontend}: GET a frontend
/api/providers/{provider}/frontends/{frontend}/routes: GET routes in a frontend
/api/providers/{provider}/frontends/{frontend}/routes/{route}: GET a route in a frontend
```


#### 查看API接口 信息，可以显示，
```
[root@trarfik-test ~]# curl -s "http://localhost:8800/health"|jq 
{
  "pid": 23955,
  "uptime": "4m19.415827181s",
  "uptime_sec": 259.415827181,
  "time": "2017-04-21 10:38:44.925762492 +0800 CST",
  "unixtime": 1492742324,
  "status_code_count": {},
  "total_status_code_count": {
    "304": 3,
    "404": 2,
    "429": 6
  },
  "count": 0,
  "total_count": 11,
  "total_response_time": "11.553372ms",
  "total_response_time_sec": 0.011553372000000001,
  "average_response_time": "1.050306ms",
  "average_response_time_sec": 0.001050306,
  "recent_errors": [
  ...............
  ]
}
```

#### 查看配置信息接口：
```
[root@trarfik-test ~]# curl -s "http://localhost:8800/api"|jq        
{
  "file": {
    "backends": {
      "test1": {
        "servers": {
          "server1": {
            "url": "http://172.16.100.70:80",
            "weight": 1
          },
          "server2": {
            "url": "http://172.16.100.71:80",
            "weight": 1
          }
        },
        "circuitBreaker": {
          "expression": "NetworkErrorRatio() > 0.5"
        },
        "loadBalancer": {
          "method": "drr"
        },
        "maxConn": {
          "amount": 10,
          "extractorFunc": "request.host"
        }
      }
    },
    "frontends": {
      "test1": {
        "entryPoints": [
          "http",
          "https"
        ],
        "backend": "test1",
        "routes": {
          "service1": {
            "rule": "Host:test.ptmind.com;"
          }
        },
        "passHostHeader": true,
        "priority": 10
      }
    }
  }
}
```


### DOCKER  方式启动

Docker 启动需要先准备一下配置文件，将配置文件挂载到容器内部，另外注意下，api 管理端口。

docker run -d -p 8080:8080 -p 80:80 -v $PWD/traefik.toml:/etc/traefik/traefik.toml traefik


### 域名反向代理配置实例演示

#### 监听域名

test.ptmind.com  
pttest.ptmind.com


#### 后端轮训站点：
172.16.100.70：80  
172.16.100.71：80

#### 安全考虑：
显示单个客户端请求链接数；
后端不稳定停止转发轮训；


配置信息如下：
```
[root@trarfik-test config]# more rules.toml 
##后端配置
#[backends]
##发送请求重试
#[retry]
###默认只向后端请求一次，不重试，
attempts = 3
  [backends.testptmindcom]
    ##后端网络错误率>0.5 停止转发；
    [backends.testptmindcom.circuitbreaker]
      expression = "NetworkErrorRatio() > 0.5"

    ##轮训方式，method=drr（加权轮训调度）default：wrr（队列轮转算法）
    [backends.testptmindcom.LoadBalancer]
      method = "drr"

    ##安全限制，单个主机连接数大于指定值，会提示“max connections reached”
    [backends.testptmindcom.maxconn]
      amount = 10
      extractorfunc = "request.host"
    ##第一台后端节点
    [backends.testptmindcom.servers.server1]
      url = "http://172.16.100.70:80"
      weight = 1

    ##第二台后端节点
    [backends.testptmindcom.servers.server2]
      url = "http://172.16.100.71:80"
      weight = 1
##前端配置
[frontends]
  #定义一个接入点的名字
  [frontends.testptmindcom]
  passHostHeader = true
  priority = 10
  ##定义调用后端名称
  backend = "testptmindcom"
    ##前端监听域名,可以监听多域名
    [frontends.testptmindcom.routes.service]
      rule = "Host:test.ptmind.com,pttest.ptmind.com;"
```


#### 验证配置信息：
[root@trarfik-test ~]# curl http://localhost:8800/api|jq
```
{
  "file": {
    "backends": {
      "testptmindcom": {
        "servers": {
          "server1": {
            "url": "http://172.16.100.70:80",
            "weight": 1
          },
          "server2": {
            "url": "http://172.16.100.71:80",
            "weight": 1
          }
        },
        "circuitBreaker": {
          "expression": "NetworkErrorRatio() > 0.5"
        },
        "loadBalancer": {
          "method": "drr"
        },
        "maxConn": {
          "amount": 10,
          "extractorFunc": "request.host"
        }
      }
    },
    "frontends": {
      "testptmindcom": {
        "entryPoints": [
          "http",
          "https"
        ],
        "backend": "testptmindcom",
        "routes": {
          "service": {
            "rule": "Host:test.ptmind.com,pttest.ptmind.com;"
          }
        },
        "passHostHeader": true,
        "priority": 10
      }
    }
  }
}
```

### 注意：
1：traefik 可以热加载配置文件，不用每次都重启服务，在修改主配置文件选项或着修改域名监听端口时，需要重启服务；
2：一组配置内， "backends":   "frontends"  名称要统一；  
3：注意观察实例中的名称配置；