Vagrant files for the kubernetes course

provision.actual.sh

#!/usr/bin/env bash

function insert-master-on-hosts() {
	local masterip="${1}"
	grep -q k8smaster /etc/hosts
	if [[ $? -ne 0 ]]
	then
		echo "Updating hosts"
		( echo "${masterip}   k8smaster"; cat /etc/hosts ) > /tmp/newhosts
		cp /tmp/newhosts /etc/hosts
	fi
}

function make-config() {
	KUBE_VERSION=1.15.1
	#KUBE_VERSION=1.16.0
	cat <<- EOF
	apiVersion: kubeadm.k8s.io/v1beta2
	kind: ClusterConfiguration
	kubernetesVersion: ${KUBE_VERSION}               #<-- Use the word stable for newest version
	controlPlaneEndpoint: "k8smaster:6443"  #<-- Use the node alias not the IP
	networking:
	   podSubnet: 192.168.0.0/16
	apiServer:
	   extraArgs:
             advertise-address: 192.168.2.20
	EOF
}

function import-kubeconfig() {
	for cur_home in /root /home/vagrant
	do
		if [[ ! -d "${cur_home}"/.kube ]]
		then
			mkdir -p "${cur_home}"/.kube
			sudo cp -i /etc/kubernetes/admin.conf "${cur_home}"/.kube/config
			permissions="$(stat -c "%U:%G" ./ )"
			sudo chown -R "${permissions}" "${cur_home}"/.kube/
		fi
	done
}

function install-network() {
	if [[ ! -f "rbac-kdd.yaml" ]]
	then
		curl https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml -O
		kubectl apply -f rbac-kdd.yaml
	fi
	sleep 15
	if [[ ! -f "calico.yaml" ]]
	then
		#curl -k -vvv https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml| sed --expression 's/192.168.0/192.168.2/g' | sed 's|apps/v1beta1|apps/v1|' | sed 's|extensions/v1beta1|apps/v1|'  > calico.yaml
		curl -k -vvv https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml| sed --expression 's/192.168.0/192.168.2/g'  > calico.yaml
		kubectl apply -f calico.yaml
	fi
}
masterip="192.168.2.20"
 if [[ "${HOSTNAME}" == "alpha" ]]
 then
 	echo "Found ALPHA!"
 	insert-master-on-hosts "${masterip}"
 	if [[ ! -f "kubeadm-config.yaml" ]]
 	then
 		echo "$(make-config)" > kubeadm-config.yaml
 		kubeadm init  --skip-phases preflight --config=kubeadm-config.yaml --upload-certs  | tee kubeadm-init.out 
 	fi
 	import-kubeconfig
 	install-network
 	kubeadm token create > /var/vm-shared/master-token
 	openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //' > /var/vm-shared/discovery-token-ca-cert-hash
 else
 	insert-master-on-hosts "${masterip}"
 	if [[ ! -d "${HOME}"/.kube ]]
 	then
 		kubeadm join --skip-phases preflight \
			--token "$(cat /var/vm-shared/master-token)" \
			k8smaster:6443 \
			--discovery-token-ca-cert-hash "sha256:$(cat /var/vm-shared/discovery-token-ca-cert-hash)"  
			#--apiserver-advertise-address 192.168.2.20 \
 	fi
 fi

provision.base.sh

#!/usr/bin/env bash

function insert-master-on-hosts() {
	local masterip="${1}"
	grep -q k8smaster /etc/hosts
	if [[ $? -ne 0 ]]
	then
		echo "Updating hosts"
		( echo "${masterip}   k8smaster"; cat /etc/hosts ) > /tmp/newhosts
		cp /tmp/newhosts /etc/hosts
	fi
}

function make-config() {
	cat <<- "EOF"
	apiVersion: kubeadm.k8s.io/v1beta2
	kind: ClusterConfiguration
	kubernetesVersion: 1.15.1               #<-- Use the word stable for newest version
	controlPlaneEndpoint: "k8smaster:6443"  #<-- Use the node alias not the IP
	networking:
	        podSubnet: 192.168.0.0/16
	EOF
}

function import-kubeconfig() {
	for cur_home in /root /home/vagrant
	do
		if [[ ! -d "${cur_home}"/.kube ]]
		then
			mkdir -p "${cur_home}"/.kube
			sudo cp -i /etc/kubernetes/admin.conf "${cur_home}"/.kube/config
			permissions="$(stat -c "%U:%G" ./ )"
			sudo chown -R "${permissions}" "${cur_home}"/.kube/
		fi
	done
}

function install-network() {
	if [[ ! -f "rbac-kdd.yaml" ]]
	then
		curl https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml -O
		kubectl apply -f rbac-kdd.yaml
	fi
	if [[ ! -f "calico.yaml" ]]
	then
		curl -k -vvv https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml -O
		kubectl apply -f calico.yaml
	fi
}

apt-get update
apt-get install -y apt-transport-https ca-certificates curl gnupg2 software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository -y "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
apt-get update && apt-get install -y apt-transport-https curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | tee  /etc/apt/sources.list.d/kubernetes.list  
apt-get update
apt-get install -y kubelet=1.15.1-00 kubeadm=1.15.1-00 kubectl=1.15.1-00
apt-get install -y docker-ce docker-ce-cli containerd.io
apt-get install -y avahi-daemon libnss-mdns
cat  <<"EOF" > /etc/docker/daemon.json
{
	"exec-opts": ["native.cgroupdriver=systemd"],
	"log-driver": "json-file",
	"log-opts": {
		  "max-size": "100m"
	},
	"storage-driver": "overlay2"
}
EOF
systemctl restart docker.service
apt-mark hold kubelet kubeadm kubectl
swapoff -a
grep -v swap /etc/fstab > /tmp/fstab
cp {/tmp,/etc}/fstab
echo "$(date +%s) ${HOSTNAME}" >> /var/vm-shared/tests
masterip="10.0.2.10" # hardcoded for now
kubeadm config images pull

Vagrantfile.actual.rb

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|

  config.vm.define :alpha do |alpha|
    alpha.vm.box = "kube-basic"
    alpha.vm.network :private_network, ip: "192.168.2.20"
    alpha.vm.hostname = "alpha"
    alpha.vm.provider "virtualbox" do |vb|
     vb.memory = "4096"
     vb.cpus = 2
    end
    alpha.vm.synced_folder ".", "/var/vm-shared", create: true
  end
  config.vm.define :beta do |beta|
    beta.vm.box = "kube-basic"
    beta.vm.network :private_network, ip: "192.168.2.30"
    beta.vm.hostname = "beta"
    beta.vm.provider "virtualbox" do |vb|
     vb.memory = "4096"
     vb.cpus = 2
    end
    beta.vm.synced_folder ".", "/var/vm-shared", create: true
  end

    config.vm.provision "shell", path: "provision.sh"
end

Vagrantfile.base.rb

# Now do this:
#  vagrant package !!!!
#  vagrant box add kube-base base/package.box   #<----- import ./base/package.box as "kube-base"
#
Vagrant.configure("2") do |config|

  config.vm.define :alpha do |alpha|
    alpha.vm.box = "ubuntu/bionic64"
    alpha.vm.network :private_network, ip: "10.0.2.10", virtualbox__intnet: true
    alpha.vm.hostname = "alpha"
    alpha.vm.provider "virtualbox" do |vb|
     vb.memory = "4096"
     vb.cpus = 2
    end
    alpha.vm.synced_folder ".", "/var/vm-shared", create: true
  end
   # config.vm.network "forwarded_port", guest:6443, host: 7443, host_ip: "127.0.0.1"

   config.vm.provision "shell", path: "provision.base.sh"
end