#Docker #Kubernetes #Ubuntu

Full steps can be found at https://i12bretro.github.io/tutorials/0421.html

Preparing the VMs

1. Log into a freshly installed Ubuntu VM
2. Run the following commands

   set the hostname

   sudo hostnamectl set-hostname kubernetes

   update hosts file

   sudo nano /etc/hosts
3. Update the 127.0.01 to the new hostname, kubernetes
4. Press CTRL+O, Enter, CTRL+X to write the changes to hosts
5. Continue with the following commands

   disable the firewall

   sudo ufw disable

   disable the swap file

   sudo swapoff -a

   disable swap partition

   sudo sed -i '/ swap / s/^(.*)$/#\1/g' /etc/fstab sudo echo "vm.swappiness=0" | sudo tee --append /etc/sysctl.conf

   update sysctl networking

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

   apply the changes

   sudo sysctl -p

Installing Docker

1. Continue with the following commands in terminal

   install prerequisites

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

   add docker gpg key

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

   add docker software repository

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

   install docker

   sudo apt install docker-ce docker-compose containerd.io -y

   enable and start docker service

   sudo systemctl enable docker && sudo systemctl start docker

   add the current user to the docker group

   sudo usermod -aG docker $USER

   reauthenticate for the new group membership to take effect

   su - $USER

Installing Kubernetes

1. Continue with the following commands in terminal

   add kubernetes gpg key

   curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

   add the kubernetes software repo

   echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' | sudo tee /etc/apt/sources.list.d/kubernetes.list

   update software repositories

   sudo a ... https://www.youtube.com/watch?v=8q9uPjDF59Q