simple-kubeadm-setup.txt

#
# Simple quick single host kubadm k8s setup
#

# Requires 1 host/vm to run k8s.  Runs most current stable docker and k8s!

# Add docker-ce gpg key and repo
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

# Add kubernetes gpg key and repo
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
sudo add-apt-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"

# Install docker-ce, kubelet, kubeadm and kubectl from the newly added repos.
sudo apt update
sudo apt install docker-ce kubelet kubeadm kubectl kubernetes-cni cri-tools -y


# Install k8s
sudo kubeadm init --pod-network-cidr=192.168.0.0/16

# Allow local non-root-user to have kubectl CLI access
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

# Install calico CNI networking
kubectl apply -f https://docs.projectcalico.org/v3.4/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml

# Allow single node master to run non-master workloads
kubectl taint nodes --all node-role.kubernetes.io/master-

# Verify everything is running
kubectl get pods --all-namespaces -o wide
dig +short kubernetes.default.svc.cluster.local @10.96.0.10


# Create RBAC entries needed for helm tiller
kubectl create serviceaccount --namespace kube-system tiller
kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller

# Install helm tiller
curl https://raw.githubusercontent.com/helm/helm/master/scripts/get | bash
helm init --service-account tiller

# Verify helm is ready
helm repo list
helm list