My CKA Study Guide

my-cka-study.md

Core Concepts 19%

Cluster Architecture

etcd

cat /etc/systemd/system/etcd.service
cat /etc/kubernetes/manifests/etcd.yaml (kubeadm)
ps -fC etcd | cat

kube-api

cat /etc/systemd/system/kube-apiserver.service
cat /etc/kubernetes/manifests/kube-apiserver.yaml (kubeadm)
ps -fC kube-apiserver | cat

kube-controller

cat /etc/systemd/system/kube-controller-manager.service
cat /etc/kubernetes/manifests/kube-controller-manager.yaml (kubeadm)
ps -fC kube-controller-manager | cat

kube-scheduler

cat /etc/systemd/system/kube-scheduler.service
cat /etc/kubernetes/manifests/kube-scheduler.yaml (kubeadm)
ps -fC kube-scheduler | cat

kubelet

cat /etc/systemd/system/kubelet.service
ps -fC kubelet | cat

kube-proxy

cat /etc/systemd/system/kube-proxy.service
ps -fC kube-proxy | cat

Storage 7%

Reclaim Policy

Policy	Action
Retain (default)	Remain until manually deleted but not available for reuse
Delete	Deleted automatically as soon as claim is deleted
Recycle	Data scrubbed before available to other claims