k8sinstall_ubuntu

Necessary URLs:
https://kubernetes.io/docs/setup/production-environment/container-runtimes/
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/

swapoff -a
vi /etc/fstab and enter an # at the begining of the swap fs.
apt-get update && apt-get install apt-transport-https ca-certificates curl software-properties-common -y
apt-get upgrade -y
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
add-apt-repository   "deb [arch=amd64] https://download.docker.com/linux/ubuntu  $(lsb_release -cs)  stable"
apt-get update && apt-get install docker-ce=18.06.2~ce~3-0~ubuntu -y

cat > /etc/docker/daemon.json <<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF

mkdir -p /etc/systemd/system/docker.service.d
systemctl daemon-reload 
systemctl restart docker
apt-get update && apt-get install -y apt-transport-https curl -y
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF

apt-get update
apt-get install -y kubelet kubeadm kubectl
apt-mark hold kubelet kubeadm kubectl
systemctl daemon-reload 
systemctl restart kubelet.service 
# for the Master only
kubeadm init --pod-network-cidr=192.168.0.0/16 | tee k.logs

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

source <(kubectl completion bash) 
echo "source <(kubectl completion bash)" >> ~/.bashrc
alias k=kubectl
complete -F __start_kubectl k
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml


kubectl get nodes
kubectl cluster-info

kubectl taint nodes --all node-role.kubernetes.io/master-
kubectl get nodes

#in the nodes
echo "net.bridge.bridge-nf-call-iptables=1" | sudo tee -a /etc/sysctl.conf
kubeadm join 10.128.0.15:6443 --token mdzx06.yyoeqmwj66rv2kolk8p \
    --discovery-token-ca-cert-hash sha256:f1eda2eac739dfd67d1fwvwwefb150ef2102cdc714f83e7cd86be8fd635aea436466d9b

kubectl apply -f https://docs.projectcalico.org/v3.7/manifests/calico.yaml
kubectl get componentstatus

docker run -it --privileged --net=host   -v /:/rootfs -v $CONFIG_DIR:$CONFIG_DIR -v $LOG_DIR:/var/result   k8s.gcr.io/node-test:0.2