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You're reading from  Learn Docker - Fundamentals of Docker 19.x - Second Edition

Product typeBook
Published inMar 2020
PublisherPackt
ISBN-139781838827472
Edition2nd Edition
Tools
Docker
Concepts
Containerization
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Author (1)
Dr. Gabriel N. Schenker
Dr. Gabriel N. Schenker
author image
Dr. Gabriel N. Schenker

Dr. Gabriel N. Schenker has more than 25 years of experience as an independent consultant, architect, leader, trainer, mentor, and developer. Currently, Gabriel works as Lead Solution Architect at Techgroup Switzerland. Prior to that, Gabriel worked as Lead Curriculum Developer at Docker and at Confluent. Gabriel has a Ph.D. in Physics, and he is a Docker Captain, a Certified Docker Associate, a Certified Kafka Developer and Operator, and an ASP Insider. When not working, Gabriel enjoys time with his wonderful wife Veronicah and his children.
Read more about Dr. Gabriel N. Schenker

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Chapter 14

Here are some sample answers to the questions presented in this chapter:

  1. Zero-downtime deployment means that a new version of a service in a distributed application is updated to a new version without the application needing to stop working. Usually, with Docker SwarmKit or Kubernetes (as we will see), this is done in a rolling fashion. A service consists of multiple instances and those are updated in batches so that the majority of the instances are up and running at all times.
  2. By default, Docker SwarmKit uses a rolling updated strategy to achieve zero-downtime deployments.
  3. Containers are self-contained units of deployment. If a new version of a service is deployed and does not work as expected, we (or the system) need to only roll back to the previous version. The previous version of the service is also deployed in the form of self-contained containers. Conceptually...
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Learn Docker - Fundamentals of Docker 19.x - Second Edition
Published in: Mar 2020Publisher: PacktISBN-13: 9781838827472
© 2020 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Dr. Gabriel N. Schenker

Dr. Gabriel N. Schenker has more than 25 years of experience as an independent consultant, architect, leader, trainer, mentor, and developer. Currently, Gabriel works as Lead Solution Architect at Techgroup Switzerland. Prior to that, Gabriel worked as Lead Curriculum Developer at Docker and at Confluent. Gabriel has a Ph.D. in Physics, and he is a Docker Captain, a Certified Docker Associate, a Certified Kafka Developer and Operator, and an ASP Insider. When not working, Gabriel enjoys time with his wonderful wife Veronicah and his children.
Read more about Dr. Gabriel N. Schenker

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