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The DevOps 2.3 Toolkit

You're reading from   The DevOps 2.3 Toolkit Kubernetes: Deploying and managing highly-available and fault-tolerant applications at scale

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781789135503
Length 418 pages
Edition 1st Edition
Concepts
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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. How Did We Get Here? FREE CHAPTER 2. Running Kubernetes Cluster Locally 3. Creating Pods 4. Scaling Pods With ReplicaSets 5. Using Services to Enable Communication between Pods 6. Deploying Releases with Zero-Downtime 7. Using Ingress to Forward Traffic 8. Using Volumes to Access Host's File System 9. Using ConfigMaps to Inject Configuration Files 10. Using Secrets to Hide Confidential Information 11. Dividing a Cluster into Namespaces 12. Securing Kubernetes Clusters 13. Managing Resources 14. Creating a Production-Ready Kubernetes Cluster 15. Persisting State 16. The End 17. Other Books You May Enjoy

Exploring built-in Secrets

We'll create the same Jenkins objects we defined earlier:

kubectl create \
    -f secret/jenkins-unprotected.yml \
    --record --save-config
    
kubectl rollout status deploy jenkins  

We created an Ingress, a Deployment, and a Service object. We also executed the kubectl rollout status command that will tell us when the deployment is finished.

The secret/jenkins-unprotected.yml definition does not use any new feature so we won't waste time going through the YAML file. Instead, we'll open Jenkins UI in a browser.

open "http://$(minikube ip)/jenkins"  

Upon closer inspection, you'll notice that there is no login button. Jenkins is currently unprotected. The image does allow the option to define an initial administrative username and password. If the files /etc/secrets/jenkins-user and /etc/secrets/jenkins-pass are present...

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