One node as the Manager node and the other two as the Worker nodes.īefore move on any further, we clarify that this post follows a more practical approach to demostrate how things can be done, without diving into the theoritical nitty gritty. We are using three nodes for our Docker Swarm cluster. In this article, we are configuring a Docker Swarm cluster on CentOS 7 based servers. Docker Swarm clusters can be configured and managed using the same Docker-CLI commands. Current versions of Docker include Swarm mode for natively managing a cluster of Docker Engines. Docker Registry could be hosted by a third party as a public or private registry, like Docker Hub.Docker Swarm is the native clustering and scheduling tool for Docker containers. Docker Registry : Docker images can be stored in order to be publicly or privately in a Docker registry. The docker containers on the other hand are spun-off from docker image and adds a read-write layer on top of it. Docker Containers : The docker images are read-only and stateless. These files in the Docker image are read-only and hence the content of the image cannot be altered.
Docker Images : It is a collection of files like libraries, binaries, and other dependencies just needed to run the application. Enterprise Edition (EE) : Officially supported and paid version from Docker. Community Edition (CE): do-it-yourself, community supported version of Docker that’s available for free of cost.
Docker Editionsĭocker is available in 2 editions namely: 1. It is also supported on many cloud platforms, such as Amazon EC2, Rackspace Cloud, and Google Compute Engine. Docker is supported on many Linux platforms, such as RHEL, Ubuntu, Fedora, CentOS, Debian, Arch Linux, and so on.
Docker is a container-management system that helps us easily manage Linux Containers (LXC) in an easier and universal fashion.
0 kommentar(er)
