#!/bin/bash

cat /etc/localtime

sudo rm /etc/localtime

sudo ln -s /usr/share/zoneinfo/Asia/Seoul /etc/localtime

sudo swapoff -a

sudo sed -i '/ swap / s/^\\(.*\\)$/#\\1/g' /etc/fstab

cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF

sudo modprobe overlay
sudo modprobe br_netfilter

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

sudo sysctl --system

sudo apt update && sudo apt upgrade -y

sudo apt install -y apt-transport-https ca-certificates curl software-properties-common

curl -fsSL <https://packages.cloud.google.com/apt/doc/apt-key.gpg> | sudo gpg --dearmor -o /usr/share/keyrings/kubernetes-archive-keyring.gpg

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

sudo apt update

sudo apt install -y kubelet kubeadm kubectl

sudo apt install -y containerd

sudo mkdir -p /etc/containerd

sudo containerd config default | sudo tee /etc/containerd/config.toml

sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml

sudo systemctl restart containerd

위는 containerd와 kubeadm 등 k8s 구축에 필요한 쉘 스크립트이다.

사용하기

1. vi {정의할 sh 이름} ex)) vi init.sh // 선언한 뒤 쉘 스크립트 코드를 집어 넣는다

2. sh {정의한 sh 이름} ex)) sh init.sh // 쉘 스크립트 코드 실행