K8s Flashcards

Question	Answer
12 Factor application principles	provides guidance to build web app that can scale easily and can be deployed in the Cloud
master runs	API server, scheduler, controller and state management with etcd
2 things run on worker nodes	kubelet & service proxy
what does kubelet do?	receives requests to run the containers and watches over them on the local node
what does service proxy do?	creates and manages networking rules to expose the container on the network
license?	Apache Software License v2.0
What does scheduler do?	place the containers on the nodes in the cluster according to various policies, metrics, and resource requirements
What does controller manager do?	reconciling the actual state of the cluster with the desired state
CNI	Container Network Interface fast becoming the standard networking solution for k8s pod-pod communication (not provided for k8s out of the box)
volume/emptyDir	simplest volume type defined with pod and dies with it created on node-level

Resource summary

	Created by Hou Michael over 6 years ago