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06B. Vagrant์™€ kubeadm์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์— ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ

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06B. Vagrant์™€ kubeadm์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์— ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ ๊ด€๋ จ

๋ชฉ์ฐจ
์–ธ์ œ๋‚˜ ์ตœ์‹  Kubernetes
Unit 6.2. Vagrant์™€ kubeadm์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์— ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ
์–ธ์ œ๋‚˜ ์ตœ์‹  Kubernetes

.VirtualBox์™€ Vagrant ์„ค์น˜๊ฐ€ ๋๋‚ฌ์œผ๋ฉด ๋ณธ๊ฒฉ์ ์œผ๋กœ ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ๊ตฌ์ถ•ํ•ด๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค. ์ด๋ฒˆ์— ๊ตฌ์ถ•ํ•  ํด๋Ÿฌ์Šคํ„ฐ์˜ ํ˜•ํƒœ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค.

  1. Vagrant๋กœ VirtualBox ๊ฐ€์ƒ๋จธ์‹  ์ƒ์„ฑ
  2. Vagrant๋กœ containerd ๋ฐ kubeadm ์„ค์น˜
  3. master ๋…ธ๋“œ์— worker ๋…ธ๋“œ๋ฅผ ์ˆ˜๋™์œผ๋กœ ์—ฐ๊ฒฐ
VirtualBox ๊ฐ€์ƒ๋จธ์‹ ์— ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ
VirtualBox ๊ฐ€์ƒ๋จธ์‹ ์— ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ

๋…ธ๋“œ

ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ๊ตฌ์„ฑํ•˜๋Š” ์„œ๋ฒ„(๋จธ์‹ )๋ฅผ ๋…ธ๋“œ(node)๋ผ๊ณ  ๋ถ€๋ฆ…๋‹ˆ๋‹ค. ๋…ธ๋“œ๋Š” ๋ฌผ๋ฆฌ์„œ๋ฒ„์ผ ์ˆ˜๋„ ์žˆ๊ณ , ๊ฐ€์ƒ๋จธ์‹ ์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค.

Vagrantfile ์ž‘์„ฑํ•˜๊ธฐ

์ด์ œ Vagrant ์ฝ”๋“œ๋ฅผ ์ž‘์„ฑํ•ด๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค. ๋‹ค์Œ ๋‚ด์šฉ์„ Vagrantfile๋กœ ์ €์žฅํ•ฉ๋‹ˆ๋‹ค.

Vagrantfile
Vagrant.configure("2") do |config|
  config.vm.boot_timeout = 3000

  config.vm.define "master" do |master|
    master.vm.box = "ubuntu/jammy64"
    master.vm.network "private_network", ip: "192.168.56.10"
    master.vm.hostname = "master"

    master.vm.provider "virtualbox" do |v|
      v.memory = 4096
      v.cpus = 4
    end

    master.vm.provision "0", type: "shell", preserve_order: true, privileged: true, inline: <<-EOC
cat <<-'EOF' >/etc/modules-load.d/kubernetes.conf
br_netfilter
EOF

sudo modprobe br_netfilter

cat <<-'EOF' >/etc/sysctl.d/kubernetes.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 install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository -y "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo apt update
sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&amp;1
sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

cat <<-'EOF' >/etc/default/kubelet
KUBELET_EXTRA_ARGS=--node-ip=192.168.56.10
EOF

curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

OUTPUT_FILE=/vagrant/join.sh
rm -rf $OUTPUT_FILE
rm -rf /vagrant/.kube
sudo kubeadm init --pod-network-cidr=10.244.0.0/16 --control-plane-endpoint=192.168.56.10 --apiserver-advertise-address=192.168.56.10
sudo kubeadm token create --print-join-command > $OUTPUT_FILE
chmod +x $OUTPUT_FILE

mkdir -p $HOME/.kube
sudo cp /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
cp -R $HOME/.kube /vagrant/.kube
cp -R $HOME/.kube /home/vagrant/.kube
sudo chown -R vagrant:vagrant /home/vagrant/.kube
kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
kubectl completion bash >/etc/bash_completion.d/kubectl
echo 'alias k=kubectl' >/home/vagrant/.bashrc
    EOC
  end

  (1..3).each do |i|
    config.vm.define "worker#{i}" do |worker|
      worker.vm.box = "ubuntu/jammy64"
      worker.vm.network "private_network", ip: "192.168.56.1#{i}"
      worker.vm.hostname = "worker#{i}"

      worker.vm.provider "virtualbox" do |v|
        v.memory = 2048
        v.cpus = 2
      end

      worker.vm.provision "0", type: "shell", preserve_order: true, privileged: true, inline: <<-EOC
cat <<-'EOF' >/etc/modules-load.d/kubernetes.conf
br_netfilter
EOF

sudo modprobe br_netfilter

cat <<-'EOF' >/etc/sysctl.d/kubernetes.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 install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository -y "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo apt update
sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&amp;1
sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

cat <<-'EOF' >/etc/default/kubelet
KUBELET_EXTRA_ARGS=--node-ip=192.168.56.1#{i}
EOF

curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
      EOC
    end
  end
end

์• ํ”Œ ์‹ค๋ฆฌ์ฝ˜ M ์‹œ๋ฆฌ์ฆˆ

๋งฅ์˜ CPU๊ฐ€ ์ธํ…”์ด ์•„๋‹Œ ์• ํ”Œ ์‹ค๋ฆฌ์ฝ˜ M ์‹œ๋ฆฌ์ฆˆ๋ผ๋ฉด ๋‹ค์Œ Vagrantfile์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.

Vagrantfile
Vagrant.configure("2") do |config|
  config.vm.boot_timeout = 3000

  config.vm.define "master" do |master|
    master.vm.box = "jharoian3/ubuntu-22.04-arm64"
    master.vm.box_version = "0.3"
    master.vm.network "private_network", ip: "192.168.56.10"
    master.vm.hostname = "master"

    master.vm.provider "parallels" do |v|
      v.memory = 4096
      v.cpus = 4
    end

    master.vm.provision "0", type: "shell", preserve_order: true, privileged: true, inline: <<-EOC
swapoff -a
sed -i '/swap/ s/^/#/' /etc/fstab

cat <<-'EOF' >/etc/modules-load.d/kubernetes.conf
br_netfilter
EOF

sudo modprobe br_netfilter

cat <<-'EOF' >/etc/sysctl.d/kubernetes.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 install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository -y "deb [arch=arm64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo apt update
sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&amp;1
sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

cat <<-'EOF' >/etc/default/kubelet
KUBELET_EXTRA_ARGS=--node-ip=192.168.56.10
EOF

curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

OUTPUT_FILE=/vagrant/join.sh
rm -rf $OUTPUT_FILE
rm -rf /vagrant/.kube
sudo kubeadm init --pod-network-cidr=10.244.0.0/16 --control-plane-endpoint=192.168.56.10 --apiserver-advertise-address=192.168.56.10
sudo kubeadm token create --print-join-command > $OUTPUT_FILE
chmod +x $OUTPUT_FILE

mkdir -p $HOME/.kube
sudo cp /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
cp -R $HOME/.kube /vagrant/.kube
cp -R $HOME/.kube /home/vagrant/.kube
sudo chown -R vagrant:vagrant /home/vagrant/.kube
kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
kubectl completion bash >/etc/bash_completion.d/kubectl
echo 'alias k=kubectl' >/home/vagrant/.bashrc
    EOC
  end

  (1..3).each do |i|
    config.vm.define "worker#{i}" do |worker|
      worker.vm.box = "jharoian3/ubuntu-22.04-arm64"
      worker.vm.box_version = "0.3"
      worker.vm.network "private_network", ip: "192.168.56.1#{i}"
      worker.vm.hostname = "worker#{i}"

      worker.vm.provider "parallels" do |v|
        v.memory = 2048
        v.cpus = 2
      end

      worker.vm.provision "0", type: "shell", preserve_order: true, privileged: true, inline: <<-EOC
swapoff -a
sed -i '/swap/ s/^/#/' /etc/fstab

cat <<-'EOF' >/etc/modules-load.d/kubernetes.conf
br_netfilter
EOF

sudo modprobe br_netfilter

cat <<-'EOF' >/etc/sysctl.d/kubernetes.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 install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmour -o /etc/apt/trusted.gpg.d/docker.gpg
sudo add-apt-repository -y "deb [arch=arm64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo apt update
sudo apt install -y containerd.io

containerd config default | sudo tee /etc/containerd/config.toml >/dev/null 2>&amp;1
sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml

sudo systemctl restart containerd
sudo systemctl enable containerd

cat <<-'EOF' >/etc/default/kubelet
KUBELET_EXTRA_ARGS=--node-ip=192.168.56.1#{i}
EOF

curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
      EOC
    end
  end
end

Parallels๋ฅผ ์‚ฌ์šฉํ•˜๋ฏ€๋กœ ๋‹ค์Œ ๋ช…๋ น์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์„ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค.

vagrant up --provider=parallels

Minikube ํด๋Ÿฌ์Šคํ„ฐ

Minikube ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ์ƒ์„ฑํ–ˆ๋‹ค๋ฉด ๋‹ค์Œ ๋ช…๋ น์œผ๋กœ ๋จผ์ € Minikube ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ์‚ญ์ œํ•ฉ๋‹ˆ๋‹ค.

minikube delete

Avast Antivirus ๊ฐ์‹œ ์ œ์–ด ๋ฌธ์ œ

Avast Antivirus ๋“ฑ ์•ˆํ‹ฐ๋ฐ”์ด๋Ÿฌ์Šค ํ”„๋กœ๊ทธ๋žจ์ด ์„ค์น˜๋˜์–ด ์žˆ๋Š” ๊ฒฝ์šฐ vagrant up ๋ช…๋ น์„ ์‹คํ–‰ํ–ˆ์„ ๋•Œ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๋ฉ”์‹œ์ง€๊ฐ€ ์ถœ๋ ฅ๋˜๋ฉด์„œ ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ Avast ๊ฐ์‹œ ์ œ์–ด ๊ธฐ๋Šฅ์„ ๋ฐ˜๋“œ์‹œ ๋„๋„๋ก ํ•ฉ๋‹ˆ๋‹ค.

# Bringing machine 'master' up with 'virtualbox' provider...
# Bringing machine 'worker1' up with 'virtualbox' provider...
# Bringing machine 'worker2' up with 'virtualbox' provider...
# Bringing machine 'worker3' up with 'virtualbox' provider...
# ==> master: Box 'ubuntu/jammy64' could not be found. Attempting to find and install...
#     master: Box Provider: virtualbox
#     master: Box Version: >= 0
# The box 'ubuntu/jammy64' could not be found or
# could not be accessed in the remote catalog. If this is a private
# box on HashiCorp's Vagrant Cloud, please verify you're logged in via
# `vagrant login`. Also, please double-check the name. The expanded
# URL and error message are shown below:
# 
# URL: ["https://vagrantcloud.com/ubuntu/jammy64"]
# Error: schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - ํ•ด๋‹น ํ•จ์ˆ˜์—์„œ ์ธ์ฆ์„œ์— ๋Œ€ํ•œ ํŒŒ๊ธฐ ์—ฌ๋ถ€๋ฅผ ๊ฒ€์‚ฌํ•˜์ง€ ๋ชปํ–ˆ์Šต๋‹ˆ๋‹ค.

vagrant up ๋ช…๋ น์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์„ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค. ์‹œ๊ฐ„์ด ๊ฝค ์˜ค๋ž˜ ๊ฑธ๋ฆฌ๋ฏ€๋กœ ๋Š๊ธ‹ํ•˜๊ฒŒ ๊ธฐ๋‹ค๋ฆฝ๋‹ˆ๋‹ค.

vagrant up

SSH auth method: Private Key์—์„œ ๋ฉˆ์ถ”๋Š” ๊ฒฝ์šฐ

vagrant up ๋ช…๋ น์œผ๋กœ ๊ฐ€์ƒ๋จธ์‹ ์„ ์ƒ์„ฑํ•  ๋•Œ SSH auth method: Private Key์—์„œ ๋ฉˆ์ถ”๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ์Šต๋‹ˆ๋‹ค.

๋”ฐ๋ผ์„œ VirtualBox GUI ์•ฑ์ธ Oracle VM VirtualBox์„ ๋ฐ˜๋“œ์‹œ ์‹คํ–‰ํ•ด ๋†“์€ ์ƒํƒœ๋กœ ๋ช…๋ น์„ ์‹คํ–‰ํ•ฉ๋‹ˆ๋‹ค.
๋”ฐ๋ผ์„œ VirtualBox GUI ์•ฑ์ธ Oracle VM VirtualBox์„ ๋ฐ˜๋“œ์‹œ ์‹คํ–‰ํ•ด ๋†“์€ ์ƒํƒœ๋กœ vagrant up ๋ช…๋ น์„ ์‹คํ–‰ํ•ฉ๋‹ˆ๋‹ค.

vagrant up ๋ช…๋ น ์‹คํ–‰์ด ๋๋‚ฌ์œผ๋ฉด vagrant status ๋ช…๋ น์„ ์ž…๋ ฅํ•˜์—ฌ ๊ฐ€์ƒ๋จธ์‹ ์˜ ์ƒํƒœ๋ฅผ ํ™•์ธํ•ฉ๋‹ˆ๋‹ค. ๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ‘œ์‹œ๋˜๋ฉด ์ •์ƒ์ ์œผ๋กœ ์ƒ์„ฑ๋œ ๊ฒƒ์ž…๋‹ˆ๋‹ค.

vagrant status
#
# Current machine states:
# 
# master                    running (virtualbox)
# worker1                   running (virtualbox)
# worker2                   running (virtualbox)
# worker3                   running (virtualbox)
# 
# This environment represents multiple VMs. The VMs are all listed
# above with their current state. For more information about a specific
# VM, run `vagrant status NAME`.

๋งˆ์Šคํ„ฐ ๋…ธ๋“œ ํ™•์ธํ•˜๊ธฐ

.Vagrantfile์•ˆ์— ๋‚ด์žฅ๋œ ์Šคํฌ๋ฆฝํŠธ๋กœ kubeadm ์‹คํ–‰์— ํ•„์š”ํ•œ ์„ค์ •์„ ํ•˜๊ณ  ํŒจํ‚ค์ง€๋“ค์„ ์„ค์น˜ํ–ˆ์Šต๋‹ˆ๋‹ค. master ๋…ธ๋“œ์—๋Š” ์ œ์–ด ํ”Œ๋ ˆ์ธ(Control Plane)์ด ๊ตฌ์ถ•๋œ ์ƒํƒœ๊ณ , worker1, 2, 3 ๋…ธ๋“œ์—๋Š” kubeadm๋งŒ ์„ค์น˜๋œ ์ƒํƒœ์ž…๋‹ˆ๋‹ค.

๋‹ค์Œ ๋ช…๋ น์„ ์‹คํ–‰ํ•˜์—ฌ master ๋…ธ๋“œ ์•ˆ์œผ๋กœ ๋“ค์–ด๊ฐ‘๋‹ˆ๋‹ค.

vagrant ssh master
#
# Welcome to Ubuntu 22.04.1 LTS (GNU/Linux 5.15.0-52-generic x86_64)
# 
#  * Documentation:  https://help.ubuntu.com
#  * Management:     https://landscape.canonical.com
#  * Support:        https://ubuntu.com/advantage
# 
#   System information as of Sun Nov  6 17:35:51 UTC 2022
# 
#   System load:  0.5947265625      Users logged in:         0
#   Usage of /:   9.0% of 38.70GB   IPv4 address for cni0:   10.244.0.1
#   Memory usage: 37%               IPv4 address for enp0s3: 10.0.2.15
#   Swap usage:   0%                IPv4 address for enp0s8: 192.168.56.10
#   Processes:    124
# 
# 
# 11 updates can be applied immediately.
# 10 of these updates are standard security updates.
# To see these additional updates run: apt list --upgradable
# 
# 
# Last login: Sun Nov  6 11:51:31 2022 from 10.0.2.2
# vagrant@master:~$

์œˆ๋„์šฐ์—์„œ vagrant ssh master ์‹คํ–‰ ์‹œ Permission denied (publickey) ์—๋Ÿฌ ๋ฐœ์ƒ ๋ฌธ์ œ

์œˆ๋„์šฐ์—์„œ vagrant ssh master ๋ช…๋ น์„ ์‹คํ–‰ํ–ˆ์„ ๋•Œ vagrant@127.0.0.1: Permission denied (publickey). ์™€ ๊ฐ™์€ ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ•˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋•Œ๋Š” $env:VAGRANT_PREFER_SYSTEM_BIN += 0 ๋ช…๋ น์„ ์‹คํ–‰ํ•œ ๋’ค vagrant ssh master ๋ช…๋ น์„ ์‹คํ–‰ํ•˜๋ฉด ๋ฉ๋‹ˆ๋‹ค.

PowerShell
$env:VAGRANT_PREFER_SYSTEM_BIN += 0
vagrant ssh master

master ๋…ธ๋“œ ์•ˆ์œผ๋กœ ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค. kubectl๋„ ์„ค์น˜ํ•ด๋†“์•˜์œผ๋ฏ€๋กœ kubectl get node ๋ช…๋ น์œผ๋กœ ๋…ธ๋“œ ๋ชฉ๋ก์„ ์ถœ๋ ฅํ•ด๋ด…๋‹ˆ๋‹ค.

kubectl get node
#
# NAME     STATUS   ROLES           AGE     VERSION
# master   Ready    control-plane   7m40s   v1.28.4

master ๋…ธ๋“œ ํ•˜๋‚˜๋งŒ ์ƒ์„ฑ๋˜์–ด ์žˆ๊ณ  ๋กค์€ ์ œ์–ด ํ”Œ๋ ˆ์ธ(control-plane)์ธ ๊ฒƒ์„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์•ž์œผ๋กœ vagrant ssh๋กœ ๋“ค์–ด๊ฐ„ ๋…ธ๋“œ์—์„œ ๋น ์ ธ๋‚˜์˜ฌ ๋•Œ๋Š” Ctrl+D ํ‚ค๋ฅผ ์ž…๋ ฅํ•˜๋ฉด ๋ฉ๋‹ˆ๋‹ค.

์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•ํ•˜๊ธฐ

์ด์ œํ„ฐ ๋“ค์–ด๊ฐ‘๋‹ˆ๋‹ค.

vagrant ssh worker1

cd /vagrant/
sudo ./join.sh
#
# [preflight] Running pre-flight checks
#         [WARNING SystemVerification]: missing optional cgroups: blkio
# [preflight] Reading configuration from the cluster...
# [preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
# [kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
# [kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
# [kubelet-start] Starting the kubelet
# [kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...
# 
# This node has joined the cluster:
# * Certificate signing request was sent to apiserver and a response was received.
# * The Kubelet was informed of the new secure connection details.
# 
# Run 'kubectl get nodes' on the control-plane to see this node join the cluster.

.join.sh ํŒŒ์ผ์€ master ๋…ธ๋“œ๋ฅผ ์ƒ์„ฑํ•œ ๋’ค kubeadm join ๋ช…๋ น์„ ๋ฏธ๋ฆฌ ์ €์žฅํ•ด๋‘” ํŒŒ์ผ์ž…๋‹ˆ๋‹ค. ์ด ๋ถ€๋ถ„์€ ๋’ค์—์„œ ์ž์„ธํžˆ ์„ค๋ช…ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค.

์œ„ ๋ช…๋ น๋“ค์„ worker2, worker3์—๋„ ๋˜‘๊ฐ™์ด ์‹คํ–‰ํ•ฉ๋‹ˆ๋‹ค.

์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ํด๋Ÿฌ์Šคํ„ฐ ํ™•์ธํ•˜๊ธฐ

vagrant ssh master ๋ช…๋ น์„ ์‹คํ–‰ํ•˜์—ฌ ๋‹ค์‹œ master ๋…ธ๋“œ๋กœ ๋“ค์–ด๊ฐ‘๋‹ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  kubectl get node ๋ช…๋ น์„ ์‹คํ–‰ํ•ด๋ด…๋‹ˆ๋‹ค.

vagrant ssh master

kubectl get node
# 
# NAME      STATUS   ROLES           AGE     VERSION
# master    Ready    control-plane   19m     v1.28.4
# worker1   Ready    &lt;none>          5m18s   v1.28.4
# worker2   Ready    &lt;none>          68s     v1.28.4
# worker3   Ready    &lt;none>          31s     v1.28.4

master, worker1, 2, 3 ๋…ธ๋“œ๊ฐ€ ๋ชจ๋‘ Ready ์ƒํƒœ์ธ ๊ฒƒ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋ ‡๊ฒŒ ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ํด๋Ÿฌ์Šคํ„ฐ ๊ตฌ์ถ•์ด ๋๋‚ฌ์Šต๋‹ˆ๋‹ค.

.kube ๋””๋ ‰ํ„ฐ๋ฆฌ ์„ค์ •ํ•˜๊ธฐ

.Vagrantfile์ด ๋“ค์–ด์žˆ๋Š” ํด๋”๋ฅผ ๋ณด๋ฉด join.sh ํŒŒ์ผ ๋ง๊ณ ๋„ .kube ํด๋”๊ฐ€ ๋“ค์–ด์žˆ๋Š” ๊ฒƒ์„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด ํด๋”๋ฅผ ํ˜ธ์ŠคํŠธ์˜ ์‚ฌ์šฉ์ž ๊ณ„์ • ํด๋”(๋””๋ ‰ํ„ฐ๋ฆฌ๋กœ) ๋ณต์‚ฌํ•˜๋ฉด ๋…ธ๋“œ ๋ฐ”๊นฅ์—์„œ๋„ kubectl๋กœ ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ์ œ์–ดํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

.kube ๋””๋ ‰ํ„ฐ๋ฆฌ ๋ฐฑ์—…

์•„๋ž˜ ๋ช…๋ น์„ ์‹คํ–‰ํ•˜๋ฉด ๊ธฐ์กด .kube/config ํŒŒ์ผ์„ ์‚ญ์ œํ•˜๊ฑฐ๋‚˜ ๋ฎ์–ด์“ฐ๊ฒŒ ๋ฉ๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ ๊ธฐ์กด .kube ๋””๋ ‰ํ„ฐ๋ฆฌ๋Š” ๋ฐฑ์—…ํ•ด์ฃผ์‹œ๊ธฐ ๋ฐ”๋ž๋‹ˆ๋‹ค.

PowerShell
Copy-Item -Force -Recurse .\.kube C:\Users\${env:UserName}\

์ด์ œ kubectl ๋ช…๋ น์ด ์ž˜ ์‹คํ–‰๋˜๋Š”์ง€ ํ…Œ์ŠคํŠธํ•ด๋ด…๋‹ˆ๋‹ค.

kubectl get node
# 
# NAME      STATUS   ROLES           AGE   VERSION
# master    Ready    control-plane   23m   v1.28.4
# worker1   Ready    &lt;none>          91s   v1.28.4
# worker2   Ready    &lt;none>          60s   v1.28.4
# worker3   Ready    &lt;none>          31s   v1.28.4

์œˆ๋„์šฐ์—์„œ Unable to connect to the server: net/http: TLS handshake timeout ์—๋Ÿฌ ๋ฐœ์ƒ

์œˆ๋„์šฐ์—์„œ kubectl get node ๋ช…๋ น์„ ์‹คํ–‰ํ–ˆ์„ ๋•Œ Unable to connect to the server: net/http: TLS handshake timeout ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค๋ฉด, $env:VAGRANT_PREFER_SYSTEM_BIN += 0์„ ์‹คํ–‰ํ•œ ๋’ค kubectl get node ๋ช…๋ น์„ ์‹คํ–‰ํ•ด์ค๋‹ˆ๋‹ค.

PowerShell
$env:VAGRANT_PREFER_SYSTEM_BIN += 0
kubectl get node