[EagleEye][환경세팅] 쿠버네티스 설치 1 - 설치

sudo systemctl enable kubelethttps://computingforgeeks.com/deploy-kubernetes-cluster-on-ubuntu-with-kubeadm/

Install Kubernetes Cluster on Ubuntu 20.04 with kubeadm | ComputingForGeeks

 

쿠버네티스 서버 설치

• update / upgrade / reboot
  >> sudo apt update
  >> sudo apt full-upgrade -y
  >> sudo reboot
  >> sudo apt autoremove

 

kubelet, kubeadm, kubectl 설치

• add repository
  >> sudo apt -y install curl apt-transport-https
  >> sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.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
• install packages
  >> sudo apt update
  >> sudo apt -y install vim git curl wget kubelet kubeadm kubectl
  >> sudo apt-mark hold kubelet kubeadm kubectl
• 설치 확인
  >> kubectl version --client && kubeadm version

 

Swap 끄기

• swap 끄기
  >> sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
  >> sudo swapoff -a
• 커널 모듈 enable
  >> sudo modprobe overlay
  >> sudo modprobe br_netfilter
• sysctl 설정
  >> sudo tee /etc/sysctl.d/kubernetes.conf<<EOF
  net.bridge.bridge-nf-call-ip6tables = 1
  net.bridge.bridge-nf-call-iptables = 1
  net.ipv4.ip_forward = 1
  EOF
• sysctl reload
  >> sudo sysctl --system

 

Docker 설정

• Docker 설치했다고 가정 후 설정 내용
• 디렉토리 생성
  >> sudo mkdir -p /etc/systemd/system/docker.service.d
• damon json config 파일 생성
  >> sudo tee /etc/docker/daemon.json <<EOF
  {
    "exec-opts": ["native.cgroupdriver=systemd"],
    "log-driver": "json-file",
    "log-opts": {
      "max-size": "100m"
    },
    "storage-driver": "overlay2"
  }
  EOF
• 서비스 시작/enable
  >> sudo systemctl daemon-reload
  >> sudo systemctl restart docker
  >> sudo systemctl enable docker
• Docker 대신 containerd 사용하기로 결정
  - 위 내용 진행 후 폴더 삭제함
  >> sudo rm -r /etc/systemd/system/docker.service.d
  - docker service 정지
  >> systemctl stop docker.service
  >> systemctl stop docker.socket

 

Containerd 설치

• Configure persistent loading of modules
  >> sudo tee /etc/modules-load.d/containerd.conf <<EOF
  overlay
  br_netfilter
  EOF
• Load at runtime
  >> sudo modprobe overlay
  >> sudo modprobe br_netfilter
• sysctl 파라미터 설정 확인
  >> sudo tee /etc/sysctl.d/kubernetes.conf<<EOF
  net.bridge.bridge-nf-call-ip6tables = 1
  net.bridge.bridge-nf-call-iptables = 1
  net.ipv4.ip_forward = 1
  EOF

• Reload
  >> sudo sysctl --system
• 패키지 설치
  >> sudo apt install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates
• Docker repo 추가
  >> curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
  >> sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
• containerd 설치
  >> sudo apt update
  >> sudo apt install -y containerd.io
• containerd 설정
  >> sudo su -
  >> mkdir -p /etc/containerd
  >> containerd config default>/etc/containerd/config.toml
• restart containerd
  >> sudo systemctl restart containerd
  >> sudo systemctl enable containerd
  >> systemctl status  containerd