Book Image

Beginning DevOps with Docker

By : Joseph Muli
5 (1)
Book Image

Beginning DevOps with Docker

5 (1)
By: Joseph Muli

Overview of this book

Making sure that your application runs across different systems as intended is quickly becoming a standard development requirement. With Docker, you can ensure that what you build will behave the way you expect it to, regardless of where it's deployed. By guiding you through Docker from start to finish (from installation, to the Docker Registry, all the way through to working with Docker Swarms), we’ll equip you with the skills you need to migrate your workflow to Docker with complete confidence.
Table of Contents (7 chapters)

Orchestration


Running containers on our local environment is easy and does not require a lot of our effort; when it comes to the cloud, we need a different kind of mindset and tools to aid us in achieving this. Our environment should be highly available, fault tolerant, and easily scalable. This process of coordinating resources and/or containers, resulting in a consolidated workflow, is orchestration.

First, let's get familiarized with some of the terms used when it comes to orchestration:

  • docker-engine: This refers to the Docker bundle or installation we currently have on our computers

  • docker-machine: A tool that helps us install Docker on virtual hosts

  • Virtual hosts: These are virtual servers that run under physical hosts

  • docker-swarm: A clustering tool for Docker

  • docker host: A host or server that has Docker set up or installed

  • Node: A Docker host that is connected to a swarm cluster

  • Cluster: A group of Docker hosts or nodes

  • Replica: A duplicate or number of duplicates of an instance...