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kubernetes-the-hard-way/vagrant/README.md

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Vagrant

This directory contains the configuration for the virtual machines we will use for the installation.

A few prerequisites are handled by the VM provisioning steps.

Kernel Settings

  1. Install the br_netfilter kernel module that permits kube-proxy to manipulate IP tables rules.
  2. Add the two tunables net.bridge.bridge-nf-call-iptables=1 and net.ipv4.ip_forward=1 also required for successful pod networking.

DNS settings

  1. Set the default DNS server to be Google, as we know this always works.
  2. Set up /etc/hosts so that all the VMs can resolve each other

Other settings

  1. Install configs for vim and tmux on controlplane01