Creating swarm and overlay manual

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This link: https://blog.csdn.net/ldaokun2006/article/details/80080266

PS:
- physical ip address native localhost

1. Download and zookeeper swarm Mirror Mirror

docker pull swarm
docker pull zookeeper

2. modify the configuration docker Configuration

• Find the profile path

[hadoop001@dhc-slaver1 ~]$ systemctl status docker.service
docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)

• Modify the configuration file

vim /usr/lib/systemd/system/docker.service
在ExecStart行后添加
-H 0.0.0.0:2375 -H unix:///var/run/docker.sock --cluster-store=zk://172.16.125.128:2181 --cluster-advertise=localhost:2375

• Reload the configuration and reboot

systemctl daemon-reload
systemctl restart docker.service

3. Create a zookeeper container

docker run --name some-zookeeper --restart always -d zookeeper

4. Create a swarm agent

 docker run --name swarm-agent1 -d swarm join zk://172.16.125.128:2181/swarm-agent --addr=localhost:2375

5. Create a swarm manager

docker run --name swarm-manage -d -p 2376:2375 swarm manage zk://172.16.125.128:2181/swarm-agent

6. Check operation

 docker -H tcp://localhost:2380 ps

7. Create a network on manager

docker network create --driver overlay  n_net

8. Check the network created situation

• On all machines swarm cluster

docker network ls