merge files from the blockchain infra repo (#59)

code/kubernetes/README.md

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+
+## kubernetes
+
+<br>
+
+### tl; dr
+
+<br>
+
+1. a **kubernetes cluster** consists of nodes (similar to servers) 
+2. **nodes** run **pods**, which are collections of **docker containers**
+3. **containers** in a pod share the same network
+4. **deployment** is a kubernetes object responsible for launching and maintaining pods
+6. **services** objects allow pods to communicate with other pods
+
+
+<br>
+
+---
+
+### examples in this repository
+
+<br>
+
+* **[spin up a node server example](node-server-example)**
+* **[using kustomize for deployment](kustomize)**
+* **[using python cdk for deployment](python-cdk)**
+
+
+<br>
+
+---
+
+### external resources
+
+<br>
+
+##### learning K8s
+
+* [kubelabs](https://github.com/collabnix/kubelabs)
+* [scalable microservices](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
+
+##### tools
+
+
+- [minikube](https://github.com/kubernetes/minikube) implements a local Kubernetes cluster on macOS, Linux, and Windows. You can install it following [this instructions](https://minikube.sigs.k8s.io/docs/start/)
+- [kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/) is a command line interface for running commands against Kubernetes clusters
+- [kubectx](https://github.com/ahmetb/kubectx) is a tool to switch between k8s contexts
+- [k14s](https://k14s.io/): Kubernetes Tools that follow Unix philosophy to be simple, and composable
+
+##### tutorials
+
+
+* [Google's K8s 101](https://techdevguide.withgoogle.com/paths/cloud/sequence-2/kubernetes-101-pods-nodes-containers-and-clusters/#!)
+* [K8s Bootcamp](https://kubernetesbootcamp.github.io/kubernetes-bootcamp/)
+* [K8s the Hard Way](https://github.com/kelseyhightower/kubernetes-the-hard-way#labs).
+* [Kubernetes Community Overview and Contributions Guide](https://docs.google.com/presentation/d/1JqcALpsg07eH665ZXQrIvOcin6SzzsIUjMRRVivrZMg/edit?usp=sharing)
+* [An Intro to Google’s Kubernetes and How to Use It](http://www.ctl.io/developers/blog/post/what-is-kubernetes-and-how-to-use-it/)
+* [Getting Started on Kubernetes](http://containertutorials.com/get_started_kubernetes/index.html)
+* [Kubernetes: The Future of Cloud Hosting](https://github.com/meteorhacks/meteorhacks.github.io/blob/master/_posts/2015-04-22-learn-kubernetes-the-future-of-the-cloud.md)
+* [Kubernetes by Google](http://thevirtualizationguy.wordpress.com/tag/kubernetes/)
+* [Application Containers: Kubernetes and Docker from Scratch](http://keithtenzer.com/2015/06/01/application-containers-kubernetes-and-docker-from-scratch/)
+* [Learn the Kubernetes Key Concepts in 10 Minutes](http://omerio.com/2015/12/18/learn-the-kubernetes-key-concepts-in-10-minutes/)
+* [The Children's Illustrated Guide to Kubernetes](https://kubernetes.io/blog/2016/06/illustrated-childrens-guide-to-kubernetes/)
+* [The ‘kubectl run’ command](http://medium.com/@mhausenblas/the-kubectl-run-command-27c68de5cb76#.mlwi5an7o) 
+* [Docker Kubernetes Lab Handbook](https://github.com/xiaopeng163/docker-k8s-lab)
+* [Curated Resources for Kubernetes](https://hackr.io/tutorials/learn-kubernetes)
+* [Kubernetes Comic](https://cloud.google.com/kubernetes-engine/kubernetes-comic/)
+* [Kubernetes 101: Pods, Nodes, Containers, and Clusters](https://medium.com/google-cloud/kubernetes-101-pods-nodes-containers-and-clusters-c1509e409e16)
+* [An Introduction to Kubernetes](http://www.digitalocean.com/community/tutorials/an-introduction-to-kubernetes).
+* [Kubernetes and everything else - Introduction to Kubernetes and it's context](https://rinormaloku.com/introduction-application-architecture/)
+* [Installation on Centos 7](http://severalnines.com/blog/installing-kubernetes-cluster-minions-centos7-manage-pods-services)
+* [Setting Up a Kubernetes Cluster on Ubuntu 18.04](https://mherman.org/blog/2018/08/20/setting-up-a-kubernetes-cluster-on-ubuntu/)
+* [Cloud Native Landscape](https://landscape.cncf.io/)
+* [Kubernetes Tutorials by Kubernetes Team](http://kubernetes.io/docs/tutorials/)
+* [Kubernetes By Example by OpenShift Team](http://kubernetesbyexample.com)
+* [Kubernetes Tutorial by Tutorialspoint](http://www.tutorialspoint.com/kubernetes/)
+* [Imperative vs. Declarative — a Kubernetes Tutorial](https://medium.com/payscale-tech/imperative-vs-declarative-a-kubernetes-tutorial-4be66c5d8914)
+
+##### MOOCs
+
+* [Learn Kubernetes Youtube series](https://www.youtube.com/playlist?list=PL34sAs7_26wNBRWM6BDhnonoA5FMERax0)
+* [Scalable Microservices with Kubernetes at Udacity](http://in.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
+* [Introduction to Kubernetes at edX](http://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x)
+
+##### articles
+
+* [Digital Ocean: How we launched our marketplace using k8s](https://blog.digitalocean.com/how-we-launched-our-marketplace-using-digitalocean-kubernetes-part-1/)
+* [Are you Ready to Manage your Infrastructure like Google?](http://blog.jetstack.io/blog/k8s-getting-started-part1/)
+* [Google is years ahead when it comes to the cloud, but it's happy the world is catching up](http://www.businessinsider.in/Google-is-years-ahead-when-it-comes-to-the-cloud-but-its-happy-the-world-is-catching-up/articleshow/47793327.cms)
+* [Top Reasons Businesses Should Move to Kubernetes Now](http://supergiant.io/blog/top-reasons-businesses-should-move-to-kubernetes-now) 
+
+##### prometheus operator
+
+* [Monitor external services with the prometheus operator](https://jpweber.io/blog/monitor-external-services-with-the-prometheus-operator/)
+* [Prometheus Operator — How to monitor an external service](https://devops.college/prometheus-operator-how-to-monitor-an-external-service-3cb6ac8d5acb)