Install Kubernetes guide:
After lots of research, I've found a easy to follow tutorial to install Kubernetes cluster. Here's the link to the video:
https://www.youtube.com/watch?v=I9goyp8mWfs
https://www.itsgeekhead.com/tuts/kubernetes-129-ubuntu-22-04-3/
UBUNTU SERVER LTS 24.04.0 - https://ubuntu.com/download/server
KUBERNETES 1.30.1 - https://kubernetes.io/releases/
CONTAINERD 1.7.18 - https://containerd.io/releases/
RUNC 1.2.0-rc.1 - https://github.com/opencontainers/runc/releases
CNI PLUGINS 1.5.0 - https://github.com/containernetworking/plugins/releases
CALICO CNI 3.28.0 - https://docs.tigera.io/calico/3.27/getting-started/kubernetes/quickstart
3 NODES, 2 vCPU, 8 GB RAM, 50GB Disk EACH
k8s-control 10.10.10.2
k8s-01 10.10.10.3
k8s-02 10.10.10.4
### ALL:
sudo su
printf "\n10.10.10.2 k8s-control\n10.10.10.3 k8s-1\n10.10.10.4 k8s-1\n\n" >> /etc/hosts
printf "overlay\nbr_netfilter\n" >> /etc/modules-load.d/containerd.conf
modprobe overlay
modprobe br_netfilter
printf "net.bridge.bridge-nf-call-iptables = 1\nnet.ipv4.ip_forward = 1\nnet.bridge.bridge-nf-call-ip6tables = 1\n" >> /etc/sysctl.d/99-kubernetes-cri.conf
sysctl --system
wget https://github.com/containerd/containerd/releases/download/v1.7.18/containerd-1.7.18-linux-amd64.tar.gz -P /tmp/
tar Cxzvf /usr/local /tmp/containerd-1.7.18-linux-amd64.tar.gz
wget https://raw.githubusercontent.com/containerd/containerd/main/containerd.service -P /etc/systemd/system/
systemctl daemon-reload
systemctl enable --now containerd
wget https://github.com/opencontainers/runc/releases/download/v1.2.0-rc.1/runc.amd64 /tmp/
install -m 755 /tmp/runc.amd64 /usr/local/sbin/runc
wget https://github.com/containernetworking/plugins/releases/download/v1.5.0/cni-plugins-linux-amd64-v1.5.0.tgz -P /tmp/
mkdir -p /opt/cni/bin
tar Cxzvf /opt/cni/bin /tmp/cni-plugins-linux-amd64-v1.5.0.tgz
mkdir -p /etc/containerd
containerd config default | tee /etc/containerd/config.toml <<<<<<<<<<< manually edit and change SystemdCgroup to true (not systemd_cgroup)
vi /etc/containerd/config.toml
systemctl restart containerd
swapoff -a <<<<<<<< just disable it in /etc/fstab instead
apt-get update
apt-get install -y apt-transport-https ca-certificates curl gpg
mkdir -p -m 755 /etc/apt/keyrings
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
apt-get update
reboot
sudo su
apt-get update
apt-get install -y kubelet kubeadm kubectl
apt-mark hold kubelet kubeadm kubectl
# check swap config, ensure swap is 0
free -m
### ONLY ON CONTROL NODE .. control plane install:
kubeadm init --pod-network-cidr 10.10.0.0/16 --kubernetes-version 1.30.1 --node-name k8s-control
export KUBECONFIG=/etc/kubernetes/admin.conf
# add Calico 3.28.0 CNI
kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/tigera-operator.yaml
wget https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/custom-resources.yaml
vi custom-resources.yaml <<<<<< edit the CIDR for pods if its custom
kubectl apply -f custom-resources.yaml
# get worker node commands to run to join additional nodes into cluster
kubeadm token create --print-join-command
###
### ONLY ON WORKER nodes
Run the command from the token create output above
