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docker+ swarm + etcd 集群的问题

2017-09-12 09:52:02  来源: 网友分享

环境信息

服务器:

  • 192.168.99.100 centos-node1

  • 192.168.99.101 centos-node2

  • 192.168.99.102 centos-node3

集群信息:

  • etc服务器: 192.168.99.100:2379

  • swarm manage: 192.168.99.101:2376

准备

  • 在所有的机器上安装dokcer

  • 在centos-node1 上docker pull ystyle/etcd (和 quay.io/coreos/etcd:v2.2.5上的是一样的。)

  • 在所有机器上dokcer pull swarm

安装etcd k-v数据库

在centos-node1上执行:

export HOSTIP=192.168.99.100docker 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

分别在三个节点执行: 加入集群

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

在centos-node2上启动swarm manage

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

然后发现不管用集群执行什么命令都没反应, 没有报错,pull不成功, images 里也是空的。

docker info 信息也很奇怪:

#docker -H tcp://192.168.99.101:2376 infoContainers: 0 Running: 0 Paused: 0 Stopped: 0Images: 0Server Version: swarm/1.1.3Role: primaryStrategy: spreadFilters: health, port, dependency, affinity, constraintNodes: 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: 2016-03-16T14:14:30ZPlugins:  Volume:  Network: Kernel Version: 3.10.0-327.10.1.el7.x86_64Operating System: linuxArchitecture: amd64CPUs: 0Total Memory: 0 BName: add02820f24f

swarm 节点只能看到两个

#docker run --rm swarm list etcd://192.168.99.100:2379/swarmtime="2016-03-16T14:19:41Z" level=info msg="Initializing discovery without TLS" 192.168.99.101:2375192.168.99.102:2375

这是怎么怎么回事? 还是我有步骤没做或漏了?

解决方案

已解决,主要是端口的问题,防火墙里开放端口就行了,还有就是docker id重复问题直接删掉/etc/docker/key.json文件,重启docker就行了
具体搭建过程请看