1 # hostnamectl set-hostname etcd1.example.com
  2 # hostnamectl set-hostname docker01.example.com
  3 # hostnamectl set-hostname docker02.example.com

  1 # mkdir -p /var/log/etcd/			#建议创建etcd日志保存目录
  2 # mkdir -p /data/etcd				#建议创建单独的etcd数据目录
  3 # export HOST_1=172.24.8.71			#设置etcd节点的IP
  4 # export DATA_DIR=/data/etcd			#设置集群etcd数据节点
  5 # REGISTRY=quay.io/coreos/etcd			#建议使用此仓库
  6 # ETCD_VERSION=latest				#设置etcd版本
  7 # export NAME_1=etcd1				#设置etcd节点的name
  8 # docker volume create --name etcd-data

  1 [root@etcd1 ~]# docker run 
  2   -p 2379:2379 
  3   -p 2380:2380 
  4   --volume=${DATA_DIR}:/etcd-data 
  5   --name etcd ${REGISTRY}:${ETCD_VERSION} 
  6   /usr/local/bin/etcd 
  7   --data-dir=/etcd-data --name ${NAME_1} 
  8   --initial-advertise-peer-urls http://${HOST_1}:2380 --listen-peer-urls http://0.0.0.0:2380 
  9   --advertise-client-urls http://${HOST_1}:2379 --listen-client-urls http://0.0.0.0:2379 
 10   --initial-cluster ${NAME_1}=http://${HOST_1}:2380

  1 [root@etcd1 ~]# docker ps

  1 [root@etcd1 ~]# docker exec -it bcb96fb0f987 /usr/local/bin/etcdctl cluster-health

  1 [root@etcd1 ~]# docker exec -it bcb96fb0f987 /usr/local/bin/etcdctl --endpoints=http://${HOST_1}:2379 member list

  1 [root@docker01 ~]# vi /etc/sysconfig/docker
  2 OPTIONS='--cluster-store=etcd://172.24.8.71:2379 --cluster-advertise=172.24.8.72:2379'
  3 [root@docker01 ~]# systemctl restart docker

  1 [root@docker02 ~]# vi /etc/sysconfig/docker
  2 OPTIONS='--cluster-store=etcd://172.24.8.71:2379 --cluster-advertise=172.24.8.73:2379'
  3 [root@docker02 ~]# systemctl restart docker

  1 [root@docker01 ~]# docker network create -d overlay overlaynet1
  2 418654e0092f5d1c3e4bf2b9ee73cdd22932dd60fecf12d7a3b024818118244b
  3 [root@docker01 ~]# docker network inspect overlaynet1

  1 [root@docker02 ~]# docker network inspect overlaynet1

  1 [root@docker01 ~]# docker run -d --name Container01 --network overlaynet1 training/webapp python app.py
  2 [root@docker02 ~]# docker run -d --name Container02 --network overlaynet1 training/webapp python app.py
  3 [root@docker01 ~]# docker exec -it 73e984a5528a /bin/bash
  4 root@73e984a5528a:/opt/webapp# ifconfig

  1 root@73e984a5528a:/opt/webapp# route -n

  1 [root@docker02 ~]# docker exec -it 89eac9521743 /bin/bash
  2 root@89eac9521743:/opt/webapp# ifconfig

  1 [root@docker01 ~]# brctl show

  1 [root@docker01 ~]# docker network ls