[kubernetes] How to use Kubernetes? && How to install Kubernetes

1. Not install, Using Website

1.1. katacoda

closed...

 

1.2. Play with kubernetes

https://labs.play-with-k8s.com/ 

Play with Kubernetes

github or docker login -> start

Add new instance

copy = ctrl+insert

past = shift+insert

 

node 1 == master

node 2 == worker

 

1. Init cluster master node.

[node1~] $ kubeadm init --apiserver-advertise-address $(hostname -i) --pod-network-cidr 10.5.0.0/16

 

2. Init cluster networking.

[node1~] $ kubectl apply -f https://raw.githubusercontent.com/cloudnativelabs/kube-router/master/daemonset/kubeadm-kuberouter.yaml

 

3. Join a worker.

[node2~] $ kubeadm join 192.168.0.18:6443 --token xvmzcu.5lrpyym3uq6pjon2 \
    --discovery-token-ca-cert-hash sha256:48a41b327f408adae9fef299761fc743340230201e0d4760784d935338c16fbe

 

4. Check wokers in master.

 [node1~] $ kubectl get nodes -o wide

 

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2. Install Kubernets

2.1. Install Docker

https://docs.docker.com/desktop/install/ubuntu/

Install Docker Desktop on Ubuntu

https://louky0714.tistory.com/131

[Docker] Ubuntu 18.04.x LTS에 docker 설치 하기

 

KVM, QEMU (version 5.2 ↑), systemd init system. Gnome, KDE, or MATE Desktop environment.

How to install KVM

https://jjeongil.tistory.com/1940

Linux : Ubuntu 18.04 : Kvm 설치 방법, 예제, 명령어

How to install QEMU

$ sudo apt install qemu-system-arm

How to check QEMU version

$ qemu-system-arm --version

 

2.2. Install kubeadom, kubectl, kubelet

https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/

Installing kubeadm

 

Update apt

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl

Download public key.

sudo curl -fsSLo /etc/apt/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg

Add the kubernetes repository.

echo "deb [signed-by=/etc/apt/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

Update and Install

sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

systemctl restart kubelet
systemctl enable kubelet

 

2.3. Config control-palne

only Master!

[node1~] $ kubeadm init

If error occurred, refer to

https://musclebear.tistory.com/165

[kubernetes] 클러스터 설치 중 kubeadm init 에러 해결

docker info

-> ERROR: Got permission denied while trying to connect to the Docker daemon socket

 

2.4. Config worker node

 

2.5. Checking install.

 

 

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plus. Equipments (no free 유료)

 

1. GKE

google kubernetes engine

2. EKS

amazon kubernetes

3. AKS

azure kubernetes service.