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Docker High Performance

You're reading from   Docker High Performance Complete your Docker journey by optimizing your application's work?ows and performance

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Product type Paperback
Published in Apr 2019
Publisher
ISBN-13 9781789807219
Length 174 pages
Edition 2nd Edition
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Authors (2):
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Russ McKendrick Russ McKendrick
Author Profile Icon Russ McKendrick
Russ McKendrick
Allan Espinosa Allan Espinosa
Author Profile Icon Allan Espinosa
Allan Espinosa
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Table of Contents (11) Chapters Close

Scaling applications


When we receive alerts from our monitoring system, as in Chapter 3, Monitoring Docker, that the pool of Docker containers running our web application is not loaded, it is time to scale out. We accomplished this using load balancers in Chapter 7, Load Balancing. The following diagram shows the high-level architecture of the commands we ran in Chapter 7, Load Balancing:

When we decide to scale out and add an additional Docker host, we can automate the process with a Scale out orchestrator component. This can be a series of simple shell scripts that we will install inside a build server, such as Jenkins. The orchestrator will basically ask the cloud provider API to create a New Docker Host. This request will then provision the Docker host and run the initial bootstrap script to download the configuration from our Configuration Management System in Chapter 2, Configuring Docker with Chef. This will then increase the number of nodes in our Docker Swarm cluster. After this...

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