Reset Kubernetes

Add User for Kubernetes

Install dep.

install

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl

# If the folder `/etc/apt/keyrings` does not exist, it should be created before the curl command, read the note below.
# sudo mkdir -p -m 755 /etc/apt/keyrings
curl -fsSL <https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key> | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
sudo chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg # allow unprivileged APT programs to read this keyring

# This overwrites any existing configuration in /etc/apt/sources.list.d/kubernetes.list
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] <https://pkgs.k8s.io/core:/stable:/v1.31/deb/> /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo chmod 644 /etc/apt/sources.list.d/kubernetes.list   
# helps tools such as command-not-found to work correctly

sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl kubernetes-cni

sudo systemctl enable --now kubelet

sudo swapoff -a

sudo modprobe br_netfilter
lsmod | grep br_netfilter
sudo sysctl net.bridge.bridge-nf-call-iptables=1

Master

echo 'KUBELET_EXTRA_ARGS="--node-ip=10.6.0.1"' | sudo tee /etc/sysconfig/kubelet

--ignore-preflight-errors=all

sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"

sudo kubeadm init --pod-network-cidr=10.6.0.0/24 --apiserver-advertise-address "10.6.0.1"   --cri-socket=unix:///var/run/containerd/containerd.sock

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

# Needs manual creation of namespace to avoid helm error
kubectl create ns kube-flannel
kubectl label --overwrite ns kube-flannel pod-security.kubernetes.io/enforce=privileged

helm repo add flannel <https://flannel-io.github.io/flannel/>
helm install flannel --set podCidr="10.6.0.0/24" --namespace kube-flannel flannel/flannel

kubectl get nodes -o wide

kubeadm token create --print-join-command