為什麼 Nomad 代理在啟動時由於連接被拒絕而關閉？

執行sudo nomad agent -dev結果getsockopt: connection refused：

* Get http://127.0.0.1:8500/v1/agent/checks: dial tcp 127.0.0.1:8500:
getsockopt: connection refused
   2017/02/19 20:31:36.971932 [INFO] client: node registration complete
   2017/02/19 20:31:36.973456 [DEBUG] client: periodically checking for 
node changes at duration 5s
   2017/02/19 20:31:36.974470 [DEBUG] client: state updated to ready
   2017/02/19 20:31:41.971377 [ERR] client.consul: error reaping services in 
consul: Get http://127.0.0.1:8500/v1/agent/services: dial tcp 127.0.0.1:8500:
getsockopt: connection refused
^C==> Caught signal: interrupt
   2017/02/19 20:32:17.507631 [DEBUG] http: Shutting down http server
   2017/02/19 20:32:17.509138 [INFO] agent: requesting shutdown
   2017/02/19 20:32:17.510375 [INFO] client: shutting down
   2017/02/19 20:32:17.511603 [INFO] nomad: shutting down server
   2017/02/19 20:32:17 [WARN] serf: Shutdown without a Leave
   2017/02/19 20:32:17.520042 [ERR] agent: shutting down consul service 
failed: 1 error(s) occurred:

* Get http://127.0.0.1:8500/v1/agent/services: dial tcp 127.0.0.1:8500: 
getsockopt: connection refused
   2017/02/19 20:32:17.520155 [INFO] agent: shutdown complete

重現步驟

• wget https://raw.githubusercontent.com/hashicorp/nomad/master/demo/vagrant/Vagrantfile
• 流浪起來
• 流浪者 ssh
• 游牧特工-dev

Nomad由於consul未啟動而無法啟動

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詳細

1. wget https://releases.hashicorp.com/consul/0.7.5/consul_0.7.5_linux_amd64.zip?_ga=1.53959528.1194033104.1487539961
2. unzip consul_0.7.5_linux_amd64.zip?_ga=1.53959528.1194033104.1487539961
3. ./consul agent -dev
4. sudo nomad agent -dev
5. nomad server-members

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ubuntu@nomad:~$ nomad server-members
Name          Address    Port  Status  Leader  Protocol  Build  Datacenter  Region
nomad.global  127.0.0.1  4648  alive   true    2         0.5.4  dc1         global

引用自：https://serverfault.com/questions/833537