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The DevOps 2.2 Toolkit

You're reading from   The DevOps 2.2 Toolkit Self-Sufficient Docker Clusters

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788991278
Length 360 pages
Edition 1st Edition
Tools
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Author (1):
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Viktor Farcic Viktor Farcic
Author Profile Icon Viktor Farcic
Viktor Farcic
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Toc

Table of Contents (18) Chapters Close

Preface 1. Introduction to Self-Adapting and Self-Healing Systems FREE CHAPTER 2. Choosing a Solution for Metrics Storage and Query 3. Deploying and Configuring Prometheus 4. Scraping Metrics 5. Defining Cluster-Wide Alerts 6. Alerting Humans 7. Alerting the System 8. Self-Healing Applied to Services 9. Self-Adaptation Applied to Services 10. Painting the Big Picture – The Self-Sufficient System Thus Far 11. Instrumenting Services 12. Self-Adaptation Applied to Instrumented Services 13. Setting Up a Production Cluster 14. Self-Healing Applied to Infrastructure 15. Self-Adaptation Applied to Infrastructure 16. Blueprint of a Self-Sufficient System 17. Other Books You May Enjoy

Notifying humans that scaling failed

We made significant progress by creating upper and lower limit for scaling. From now on, the script will not exceed them. However, the fact that we will stay within those limit does not mean that the problem that initiated the procedure is gone. Whichever process decided that a service should be scaled probably did that based on some metrics. If, for example, the average response time was slow and the system failed to scale up, the problem will persist unless there is some dark magic involved. We can categorize this situation as "the body tried to self-adapt, it failed, it's time to consult a doctor." Since we live in the 21st century, we won't call him but send him a Slack message.

Before we proceed and modify the script one more time, we need to configure Slack in Jenkins:

open "http://$(docker-machine ip swarm-1...
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