Kubernetes Digital Ocean Setup

kube-master.sh

# adapted from https://www.linode.com/docs/applications/containers/how-to-deploy-nginx-on-a-kubernetes-cluster/

# swap
swapoff -a

# hosts modify this to match the environment including all other cluster workers
echo '<PRIVATE IP>  test-kube-master'  >> /etc/hosts
echo '<PRIVATE IP>  test-kube-worker-1'  >> /etc/hosts
echo '<PRIVATE IP>  test-kube-worker-2'  >> /etc/hosts

# docker
apt install -y -q ebtables ethtool apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
apt update
apt install -y -q docker-ce

# kubernetes
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' | sudo tee /etc/apt/sources.list.d/kubernetes.list
apt update

# explicit version number
apt-get install -y -q kubelet=1.11.3-00 kubectl=1.11.3-00 kubeadm=1.11.3-00

# initialize master
kubeadm init  --pod-network-cidr=192.168.0.0/16 --apiserver-advertise-address=<PRIVATE IP>
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
kubectl apply -f https://docs.projectcalico.org/v2.6/getting-started/kubernetes/installation/hosted/kubeadm/1.6/calico.yaml

# digital ocean ccm
git clone https://github.com/digitalocean/digitalocean-cloud-controller-manager.git
export DIGITALOCEAN_ACCESS_TOKEN=<DIGITALOCEAN ACCESS TOKEN>
bash ./digitalocean-cloud-controller-manager/scripts/generate-secret.sh

# then add the configuration manually
# kubectl apply -f ./digitalocean-cloud-controller-manager/releases/v0.1.7.yml

kube-worker.sh

# adapted from https://www.linode.com/docs/applications/containers/how-to-deploy-nginx-on-a-kubernetes-cluster/

# swap
swapoff -a

# hosts modify this to match the environment including all other cluster workers
echo '<PRIVATE IP>  test-kube-master'  >> /etc/hosts
echo '<PRIVATE IP>  test-kube-worker-1'  >> /etc/hosts
echo '<PRIVATE IP>  test-kube-worker-2'  >> /etc/hosts

# docker
apt install -y -q ebtables ethtool apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
apt update
apt install -y -q docker-ce

# kubernetes
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' | sudo tee /etc/apt/sources.list.d/kubernetes.list
apt update

# explicit version number
apt-get install -y -q kubelet=1.11.3-00 kubectl=1.11.3-00 kubeadm=1.11.3-00

# join the cluster - copy this over from the master once it is initialized
# kubeadm join <MASTER PRIVATE IP>:6443 --token <KUBE TOKEN> --discovery-token-ca-cert-hash <CERT HASH>