Docker cluster (i)--Simple application Portainer

This article describes the Docker simple build cluster, using only the Portainer tool. There are two main points, one point is to open the 2375 port on the Docker host, the point is to add the host on the Portainer.

Steps:

• Premise (System is CENTOS7)
  Install Docker on node and master, respectively. Also, multiple node and so on.
• Open port 2375 on node with the following command:
  echo "OPTIONS=‘-Htcp://0.0.0.0:2375 -H unix:///var/run/docker.sock‘" >> /etc/sysconfig/docker
• Restarting the Docker service
  systemctl restart docker
• Release 2375 on the firewall

  firewall-cmd --zone=public --add-port=2375/tcp --permanetfirewall-cmd --reload

• Switch to master node, install Portainer
  docker run -d -p 9000:9000 -v /var/run/docker.sock:/var/run/docker.sock --restart=always --name portainer portainer/portainer
  -Add node nodes on Portainer
  First login Portainer, set the admin password, add endpoints,
  
  -Switch to the Portainer home page to see if the add is successful,
  
  - Summary
  This method is only used for testing experiments, the production environment, there is a great security risk!! Therefore, it will be supplemented in subsequent chapters. Cond...

Docker cluster (i)--Simple application Portainer