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The Docker Workshop

You're reading from The Docker Workshop Learn how to use Docker containers effectively to speed up the development process

Product type Paperback

Published in Oct 2020

Publisher Packt

ISBN-13 9781838983444

Length 792 pages

Edition 1st Edition

Tools

Docker

Concepts

DevOps

Authors (5):

Engy Fouda

Onur Yılmaz

Sathsara Sarathchandra

Aric Renzo

Vincent Sesto

+1 more

View More author details

Table of Contents (17) Chapters

Preface

1. Running My First Docker Container

2. Getting Started with Dockerfiles FREE CHAPTER

3. Managing Your Docker Images

4. Multi-Stage Dockerfiles

5. Composing Environments with Docker Compose

6. Introduction to Docker Networking

7. Docker Storage

8. CI/CD Pipeline

9. Docker Swarm

10. Kubernetes

11. Docker Security

12. Best Practices

13. Monitoring Docker Metrics

14. Collecting Container Logs

15. Extending Docker with Plugins

Appendix

Configuration of Services

Cloud-native applications are expected to store their configuration in environment variables. Environment variables are easy to change between different platforms without source code changes. Environment variables are dynamic values that are stored in Linux-based systems and used by applications. In other words, the variables can be used to configure applications by changing their values.

For instance, assume your application uses a LOG_LEVEL environment variable to configure what is logged. If you change the LOG_LEVEL environment variable from INFO to DEBUG and restart your application, you would see more logs and be able to troubleshoot problems more easily. In addition, you can deploy the same application with different sets of environment variables to staging, testing, and production. Likewise, the method of configuring services in Docker Compose is to set environment variables for the containers.

There are three methods of defining environment...

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Authors (5)

Vincent Sesto

Vincent Sesto

Vincent Sesto, when changing skill sets and moving from business into the information technology field 10 years ago, saw the potential of doing things via technology and has continued to follow his passion to find better ways of doing so. Vince has worked with Splunk for the past 4 years, developing apps and reporting applications around Splunk, and now works hard to advocate its success. He has worked as a system engineer in big data companies and development departments, where he has regularly supported, built, and developed with Splunk. His LinkedIn profile is at https://au.linkedin.com/in/vincesesto.

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Engy Fouda

Engy Fouda

Engy Fouda is an author, freelance engineer, and journalist. Currently, she teaches SAS, Docker Fundamentals, Docker for Enterprise Developers, Docker for Enterprise Operations, and Kubernetes at several venues as a freelance instructor. She works as a freelance journalist and publishes her work at various media outlets. She holds two master's degrees, one in journalism from Harvard University, Extension School, and another in computer engineering from Cairo University, Egypt. Moreover, she earned the Data Science Professional Graduate Certificate from Harvard University, Extension School. She has taught academically as a teacher assistant at the German University in Cairo and the American University in Cairo. She volunteers as the team lead for Momken Group (Engineering for the Blind), Egypt Scholars Inc. Also, she volunteers as a member-at-large and the newsletter editor of the IEEE Mid-Hudson Section.

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Aric Renzo

Aric Renzo

Aric Renzo is a DevOps engineer based in Charlotte, North Carolina, and is a fan of all things geeky and open source. He has experience working on many open source and free software project deployments for clients based on OpenStack, Ansible, Docker, Chef, SaltStack, and Kubernetes. Aric is a member of the Ansible community and teaches courses on basic and advanced Ansible concepts. His past projects include work on data center deployments, network infrastructure automation, MongoDB NoSQL database architecture, and designing highly available OpenStack environments. Aric is a fan of anything to do with DevOps, automation, and making his workflow more efficient. Aric is a lifelong geek and a graduate of Penn State University in the information sciences and technology program. He is married to Ashley Renzo, an incredibly beautiful and talented science teacher in Gaston County, North Carolina.

See other products by Aric Renzo

Sathsara Sarathchandra

Sathsara Sarathchandra

Sathsara Sarathchandra is a DevOps engineer, experienced in building and managing Kubernetes based production deployments both in cloud and on-premise. He has over 8 years of experience working in several companies ranging from small start-ups to enterprises. He is a Certified Kubernetes Administrator (CKA) and a certified Kubernetes application developer (CKAD). He holds a master's degree in business administration and a bachelor's degree in computer science.

See other products by Sathsara Sarathchandra

Onur Yılmaz

Onur Yılmaz

Onur Ylmaz is a senior software engineer in a multinational enterprise software company. He is a certified Kubernetes administrator (CKA) and works on Kubernetes and cloud management systems. He is a keen supporter of cutting-edge technologies including Docker, Kubernetes, and cloud-native applications. He has one master's and two bachelor's degrees in the engineering field.

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