docker+ swarm + etcd 叢集的問題

Question

環境資訊

伺服器:

• 192.168.99.100 centos-node1

• 192.168.99.101 centos-node2

• 192.168.99.102 centos-node3

叢集資訊:

• etc伺服器: 192.168.99.100:2379

• swarm manage: 192.168.99.101:2376

準備

• 在所有的機器上安裝dokcer

• 在centos-node1 上docker pull ystyle/etcd （和quay.io/coreos/etcd:v2.2.5上的是一樣的。）

• 在所有機器上dokcer pull swarm

安裝etcd k-v資料庫

在centos-node1上執行:

export HOSTIP=192.168.99.100
docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
 --name etcd ystyle/etcd \
 -name etcd0 \
 -advertise-client-urls http://${HOSTIP}:2379,http://${HOSTIP}:4001 \
 -listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
 -initial-advertise-peer-urls http://${HOSTIP}:2380 \
 -listen-peer-urls http://0.0.0.0:2380 \
 -initial-cluster-token etcd-cluster-1 \
 -initial-cluster etcd0=http://${HOSTIP}:2380 \
 -initial-cluster-state new

分別在三個節點執行： 加入叢集

docker run -d swarm join --addr=192.168.99.100:2375 etcd://192.168.99.100:2379/swarm
docker run -d swarm join --addr=192.168.99.101:2375 etcd://192.168.99.100:2379/swarm
docker run -d swarm join --addr=192.168.99.102:2375 etcd://192.168.99.100:2379/swarm

在centos-node2上啟動swarm manage

dokcer run -d -p 2376:2375 swarm manage -H=0.0.0.0:2375 etcd://192.168.99.101:2379/swarm

然後發現不管用叢集執行什麼指令都沒反應， 沒有報錯，pull不成功， images 裡也是空的。

docker info 資訊也很奇怪：

#docker -H tcp://192.168.99.101:2376 info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: swarm/1.1.3
Role: primary
Strategy: spread
Filters: health, port, dependency, affinity, constraint
Nodes: 2
 (unknown): 192.168.99.102:2375
  └ Status: Pending
  └ Containers: 0
  └ Reserved CPUs: 0 / 0
  └ Reserved Memory: 0 B / 0 B
  └ Labels:
  └ Error: (none)
  └ UpdatedAt: 2016-03-16T14:14:30Z
 (unknown): 192.168.99.101:2375
  └ Status: Pending
  └ Containers: 0
  └ Reserved CPUs: 0 / 0
  └ Reserved Memory: 0 B / 0 B
  └ Labels:
  └ Error: (none)
  └ UpdatedAt: 2016-03-16T14:14:30Z
Plugins:
 Volume:
 Network:
Kernel Version: 3.10.0-327.10.1.el7.x86_64
Operating System: linux
Architecture: amd64
CPUs: 0
Total Memory: 0 B
Name: add02820f24f

swarm 節點只能看到兩個

#docker run --rm swarm list etcd://192.168.99.100:2379/swarm
time="2016-03-16T14:19:41Z" level=info msg="Initializing discovery without TLS"
192.168.99.101:2375
192.168.99.102:2375

這是怎麼怎麼回事？ 還是我有步驟沒做或遺漏了？

Answer 1

已解決，主要是連接埠的問題，防火牆裡開放埠就行了，還有就是docker id重複問題直接刪除/etc/docker/key.json文件，重啟docker就行了
具體搭建過程請看