Kubernetes installation

dns.yaml

# should apply this config if pod could not ping outside internet
apiVersion: v1
kind: ConfigMap
metadata:
  name: kube-dns
  namespace: kube-system
data:
  upstreamNameservers: |
    ["8.8.8.8", "8.8.4.4"]

kubernetes_installation.sh

apt-get install -y kubelet kubeadm kubectl
apt-mark hold kubelet kubeadm kubectl
kubeadm init --pod-network-cidr=192.168.0.0/16 --apiserver-advertise-address=<public_ip>
kubectl apply -f https://docs.projectcalico.org/v3.1/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml
kubectl apply -f https://docs.projectcalico.org/v3.1/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml
kubectl taint nodes --all node-role.kubernetes.io/master- #if want to run pods on master node


snap install helm --classic
helm init --upgrade --service-account tiller
kubectl create serviceaccount --namespace kube-system tiller
kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller

kubectl patch deploy --namespace kube-system helm install stable/nginx-ingress --namespace kube-system --set controller.hostNetwork=true,controller.kind=DaemonSet,rbac.create=truestem tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccount":"tiller"}}}}'
helm install stable/kube-lego --namespace kube-system --set [email protected],config.LEGO_URL=https://acme-v01.api.letsencrypt.org/directory,rbac.create=true

To install specific version of the package it is enough to define it during the apt-get install command:

apt-get install -qy kubeadm=<version>
But in the current case kubectl and kubelet packages are installed by dependencies when we install kubeadm, so all these three packages should be installed with a specific version:

$ 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 && \
  sudo apt-get update -q && \
  sudo apt-get install -qy kubelet=<version> kubectl=<version> kubeadm=<version>
where available <version> is:

curl -s https://packages.cloud.google.com/apt/dists/kubernetes-xenial/main/binary-amd64/Packages | grep Version | awk '{print $2}'
For your particular case it is:

$ 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 && \
  sudo apt-get update -q && \
  sudo apt-get install -qy kubelet=1.9.6-00 kubectl=1.9.6-00 kubeadm=1.9.6-00