Networking 从nslookupd发现nsqd服务器地址

我使用以下Docker-compose.yaml文件在Docker容器中运行nsq群集：

version: '2'
services:
  nsqlookupd:
    image: nsqio/nsq
    command: /nsqlookupd
    ports:
      - "4160"
      - "4161:4161"
  nsqd:
    image: nsqio/nsq
    command: /nsqd --lookupd-tcp-address=nsqlookupd:4160 --data-path=/data
    volumes:
      - data:/data
    ports:
      - "4150:4150"
      - "4151:4151"
  nsqadmin:
    image: nsqio/nsq
    command: /nsqadmin --lookupd-http-address=nsqlookupd:4161
    ports:
      - "4171:4171"
volumes:
  data:

一切正常。但是，如果调用nsqdlookup服务器上的/nodes端点，则会得到以下结果：

$ http http://localhost:4161/nodes
HTTP/1.1 200 OK
Content-Length: 238
Content-Type: application/json; charset=utf-8
Date: Tue, 24 Jan 2017 08:44:27 GMT

{
    "data": {
        "producers": [
            {
                "broadcast_address": "7dd3d550e7f8",
                "hostname": "7dd3d550e7f8",
                "http_port": 4151,
                "remote_address": "172.18.0.4:57156",
                "tcp_port": 4150,
                "tombstones": [],
                "topics": [],
                "version": "0.3.8"
            }
        ]
    },
    "status_code": 200,
    "status_txt": "OK"
}

广播地址看起来像容器的名称/主机名。我试图ping端口4151，以防万一，但失败了

> http http://7dd3d550e7f8:4151/ping

http: error: ConnectionError: HTTPConnectionPool(host='7dd3d550e7f8', port=4151): Max retries exceeded with url: /ping (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x000001C397173EF0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)) while doing GET request to URL: http://7dd3d550e7f8:4151/ping

但是，那是作弊。nsqlookupd服务器的全部要点是，它们跟踪nsqd服务器，以便客户端可以动态获取响应服务器的列表

当nsqd节点在Docker容器中运行时，是否可以从nslookupd服务器为nsqd节点创建可访问的URL/IP地址

有什么神奇的咒语可以让它发挥作用吗

---

有人试过使用Swarm或Kubernetes吗

我发现GKE现在支持StatefulSet为1.5.2

---

这意味着您的nsqd、nsqlookupd可以作为SS实例进行旋转。现在，您可以使用-broadcast address=$POD_IP从下行api，您的制作人将能够发布到nsq-0.nsq-service-name、nsq-1.nsq-service-name等，而消费者将从nsqlookupd获得广告的nsqd IP地址。这对我们有用。今天刚刚成功

也有同样的问题。使用PetSet/StatefulSet很容易克服，但它在GKE上还不可用

> http http://172.18.0.4:4151/ping

http: error: ConnectionError: HTTPConnectionPool(host='172.18.0.4', port=4151): Max retries exceeded with url: /ping (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x000001C0D9545F28>: Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond',)) while doing GET request to URL: http://172.18.0.4:4151/ping

> http http://localhost:4151/ping
HTTP/1.1 200 OK
Content-Length: 2
Content-Type: text/plain; charset=utf-8
Date: Tue, 24 Jan 2017 08:51:30 GMT

OK