Building Kubernetes using one VM

This exercise uses a single VM to build a Kubernetes environment having a master node, an etcd database, and a pod network using Calico and Helm. Please refer to the "Further Reading" section if you want to build a multi-node cluster.

You also have the option to just use minikube (https://kubernetes.io/docs/setup/learning-environment/minikube/), though. By going through this exercise, you will learn how to build your own Kubernetes environment.

Begin with these simple steps:

1. First, configure iptables for Kubernetes:

# cat <<EOF >  /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

# sysctl --system

2. Now add the Kubernetes repository:

# cat << EOF >/etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google...