Kubernetes Install kubeadm Way

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free

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sudo swapon -show

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sudo swapoff -a

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sudo vi /etc/fstab

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# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/ubuntu-vg/ubuntu-lv during curtin installation
/dev/disk/by-id/dm-uuid-LVM-9P6wxgVviPOldHd8McXwnECNFYGbJQXIcJX3JQbySwOeEHhF09z1mRNWyWSVb8jb / ext4 defaults 0 0
# /boot was on /dev/sda2 during curtin installation
/dev/disk/by-uuid/5afd959f-a436-4e5e-8ae5-456f52e6cffe /boot ext4 defaults 0 0
# Below change to comment!!
#/swap.img      none    swap    sw      0       0

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lsmod | grep br_netfilter

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sudo modprobe br_netfilter

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

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

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sudo ufw allow 6443/tcp
sudo ufw allow 2379:2380/tcp
sudo ufw allow 10250/tcp
sudo ufw allow 10251/tcp
sudo ufw allow 10252/tcp

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sudo ufw allow 10250/tcp
sudo ufw allow 30000:32767/tcp

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sudo apt install docker.io

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sudo mkdir /etc/docker
cat <<EOF | sudo tee /etc/docker/daemon.json
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF

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sudo systemctl enable docker
sudo systemctl daemon-reload
sudo systemctl restart docker

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

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

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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

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

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kubeadm init

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kubeadm token list

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kubeadm token create --print-join-command

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strace -eopenat kubectl version