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https://github.com/dennyzhang/challenges-kubernetes

:cloud: Challenges Your Kubernetes Skills And Knowledge
https://github.com/dennyzhang/challenges-kubernetes

denny-challenges denny-kubernetes kubernetes

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:cloud: Challenges Your Kubernetes Skills And Knowledge

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README 

        
* Deep Dive Into Kubernetes

** Kubernetes Topics

github tag [[https://github.com/topics/denny-kubernetes][#denny-kubernetes]]



[[https://github.com/topics/denny-kubernetes][https://cdn.dennyzhang.com/images/github/k8s_github_repo.png]]



** Kubernetes BootCamp

 #+BEGIN_HTML

 linkedin

 github

 slack

 



 




 PRs Welcome

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 File me [[https://github.com/DennyZhang/challenges-kubernetes/issues][Issues]] or star [[https://github.com/DennyZhang/challenges-kubernetes][this repo]].



 See more Kubernetes from Denny: [[https://github.com/topics/denny-kubernetes][#denny-kubernetes]]

*** Scenario-101: 1-Node K8S Deployment I

 - Objective: Get familiar with K8S concept. Here K8S stands for Kubernetes.

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Start one node of k8s in your laptop. Mac or Linux

 2. Start a nginx webserver with one instance

 3. Scale nginx service into 2 instances.

 4. Get familiar with k8s dashboard. Find pods from GUI, check nginx log.

 #+END_EXAMPLE



 - Main Tech: minikube, nginx, dashboard

 - See more: [[bootcamp/Scenario-101][bootcamp/Scenario-101]]



*** Scenario-102: 1-Node K8S Deployment II

 - Objective: Single node deployment for stateful service

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Use yaml to start one mysql server service with 1 instance.

 2. Use yaml to start one mysql client service with 2 instances.

 3. Delete the db server instance, make sure a new one will be created automatically.

 4. When db server is recreated, make sure no data loss.

 #+END_EXAMPLE



 - Main Tech: minikube, mysql, volume

 - See more: [[bootcamp/Scenario-102][bootcamp/Scenario-102]]



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*** Scenario-103: 1-Node K8S Deployment III

 - Objective: Advanced k8s deployment for one single db service

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Suppose your k8s/minikube have multiple cluster, how you can segrate them? (Hint: namespace)

 2. When we initialize mysql via yaml, avoid store mysql root password in plain text. (Hint: secrets)

 3. Make sure we can create no more than 1 pods for DB server. (Hint: ResourceQuota)

 #+END_EXAMPLE



 - Main Tech: minikube, mysql, volume, Job

 - See more: [[bootcamp/Scenario-103][bootcamp/Scenario-103]]



*** Scenario-201: 3-Nodes K8S Deployment I

 - Objective: Know how to deployment k8s cluster env

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy 3 nodes k8s env in your virtualbox.

    One as controller, the other two as worker

 2. Deploy k8s web UI, which is missing by default.

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[bootcamp/Scenario-201][bootcamp/Scenario-201]]

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*** Scenario-202: 3-Nodes K8S Deployment II

 - Objective: Improve service availability by choosing service type wisely.

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy 3 nodes k8s. One controller, others as workers

 2. Create a nginx service with 6 instances.

 3. Make sure nginx requests will be balanced across 6 instances.

    (Hint: ClusterIP + Ingress, or External Loadbalancer)

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[bootcamp/Scenario-202][bootcamp/Scenario-202]]

 - TODO



*** Scenario-203: 3-Nodes K8S Deployment II

 - Objective: k8s cluster env with stateful service

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy 3 nodes k8s. One controller, others as workers

 2. Create an elasticsearch service with 4 instances.

    2 as master, 2 as data.

 3. Create a nightly job to backup elasticsearch cluster. (Hint: Cron Jobs)

 4. If any es instance has crashed, get alerts.

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-203][bootcamp/Scenario-203]]

 - TODO



*** Scenario-301: Use helm To Deploy Service I

 - Objective: Know the basic usage of helm

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Use helm to deploy a mysql service with single instance

 2. Customize the deployment

 #+END_EXAMPLE



 - Main Tech: minikube, helm, volume

 - See more: [[bootcamp/Scenario-301][bootcamp/Scenario-301]]



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*** Scenario-302: Use helm To Deploy Service II

 - Objective: Advanced usage of helm

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy a single instance wordpress service with helm

 2. Scale frontend to 2 instance (Hint: kubectl scale)

 3. Enforce daily db backup (Hint: CronJob)

 #+END_EXAMPLE



 - Main Tech: minikube, helm, volume

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-302][bootcamp/Scenario-302]]



*** Scenario-303: Use helm To Deploy Service III

 - Objective: HA deployemnt with helm

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Create a wordpress Chart by yourself

 2. Deploy a HA wordpress service with your helm chart

 #+END_EXAMPLE



 - Main Tech: helm, volume

 - See more: [[bootcamp/Scenario-303][bootcamp/Scenario-303]]

 - TODO



*** Scenario-304: Use helm To Deploy Service IV

 - Objective: Deploy elasticsearch cluster with 5 instances

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Create an elasticsearch cluster

 2. Scale the env to 5 instances

 #+END_EXAMPLE



 - Main Tech: helm, volume

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-304][bootcamp/Scenario-304]]

 - TODO



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*** Scenario-401: Deploy a stateful service I

 - Objective: Deploy Jenkins in k8s

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy Jenkins service by helm.

 2. Make sure JENKINS_HOME directory persist

 3. Install slack and git Jenkins plugins during helm install

 4. Enable Jenkins slave agents during helm install

 5. Start 2 Jenkins masters.

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-401][bootcamp/Scenario-401]]

 - TODO



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*** Scenario-402: Deploy a stateful service II

 - Objective: Deploy Jenkins in k8s

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Deploy Jenkins service by helm. 2 Jenkins master and 2 Jenkins agents

 2. Add health check for Jenkins agents (Hint: livenessProbe)

 3. Use nginx as an ingress for Jenkins master

 4. Simulate Jenkins slave crash events, and confirm service is fine

 5. Simulate Jenkins master crash events, and confirm service is fine

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-402][bootcamp/Scenario-402]]

 - TODO



*** Scenario-501: Day2 Mission: Setup Prometheus monitoring

 - Objective: Setup k8s monitoring

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Setup prometheus monitoring for infra level

 2. Setup prometheus monitoring for application level

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[bootcamp/Scenario-501][bootcamp/Scenario-501]]

 - TODO



*** Scenario-502: Day2 Mission: Prometheus Operator

 - Objective: Learn more about k8s operator concept

 - Requirements:

 #+BEGIN_EXAMPLE

 1. Enable prometheus operator

 2. AIOps: Use operator to respond to repetitive issues from monitoring system

 #+END_EXAMPLE



 - Main Tech:

 - See more: [[https://github.com/dennyzhang/challenges-kubernetes/tree/master/bootcamp/Scenario-502][bootcamp/Scenario-502]]

 - TODO

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** More Resources

 License: Code is licensed under [[https://www.dennyzhang.com/wp-content/mit_license.txt][MIT License]].



 - More resources: run services on k8s cluster

 #+BEGIN_EXAMPLE

 http://containertutorials.com/get_started_kubernetes/k8s_example.html

 Kubernetes Example



 https://kubernetes.io/docs/tutorials/

 kubernetes kubernetes



 https://kubernetes.io/docs/getting-started-guides/scratch/

 Creating a Custom Cluster from Scratch



 https://github.com/kubernetes/examples

 kubernetes examples in GitHub From Google



 https://kubernetes.io/docs/concepts/configuration/overview/

 Configuration Best Practices

 #+END_EXAMPLE



 - More resources: k8s cluster itself

 #+BEGIN_EXAMPLE

 https://github.com/kelseyhightower/kubernetes-the-hard-way

 Bootstrap Kubernetes the hard way on Google Cloud Platform. No scripts.



 https://github.com/davidkbainbridge/k8s-playground

 Simple VM based Kubernetes cluster setup

 #+END_EXAMPLE



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* org-mode configuration                                           :noexport:

#+STARTUP: overview customtime noalign logdone showall

#+DESCRIPTION: 

#+KEYWORDS: 

#+AUTHOR: Denny Zhang

#+EMAIL:  [email protected]

#+TAGS: noexport(n)

#+PRIORITIES: A D C

#+OPTIONS:   H:3 num:t toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t

#+OPTIONS:   TeX:t LaTeX:nil skip:nil d:nil todo:t pri:nil tags:not-in-toc

#+EXPORT_EXCLUDE_TAGS: exclude noexport

#+SEQ_TODO: TODO HALF ASSIGN | DONE BYPASS DELEGATE CANCELED DEFERRED

#+LINK_UP:   

#+LINK_HOME: 

* TODO export folder to github repo                                :noexport:

** TODO export challenges-k8s-networking to github                 :noexport:

** TODO export challenges-k8s-sourcecode to github                 :noexport:

* #  --8<-------------------------- separator ------------------------>8-- :noexport:

* Blog: 10 Kubenetes Depcreated Features, But I still miss them    :noexport:

** gitRepo

https://github.com/kubernetes/kubernetes/issues/17676#issuecomment-228650586

** heapster

* TODO How I can easily list all questions for k8s sub-domains     :noexport:

* TODO manage sns bottom: /Users/zdenny/Dropbox/git_code/quiz.dennyzhang.com/posts/kubernetes-concept :noexport:

* TODO Adsense page view count is so so wrong                      :noexport:

* TODO less indentation: https://kubernetes.dennyzhang.com/challenges-k8s-federation :noexport:

* TODO Put adsense to lower position: https://kubernetes.dennyzhang.com/challenges-k8s-monitoring :noexport: