Install K8S - Opengist

Revision dd5884aec791a18105561a8ff19e1a610655d565

Install.sh · 2.5 KiB · Bash Raw

#/bin/bash # This script is to install Kubernetes on Ubuntu 22.04 LTS, with Calico as CNI # This script used 10.244.0.0/16 as pod network CIDR. This network should not be used in your physical network. # This script used Calico v3.27.0. You can change it to the latest version. # Prerequisites DEBIAN_FRONTEND=noninteractive sudo apt update DEBIAN_FRONTEND=noninteractive sudo apt install curl gnupg2 software-properties-common apt-transport-https ca-certificates -y # Docker echo "Install Docker..." DEBIAN_FRONTEND=noninteractive sudo apt install docker.io -y # Network echo "Prepare network..." cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf overlay br_netfilter EOF sudo modprobe overlay sudo modprobe br_netfilter # sysctl params required by setup, params persist across reboots cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-iptables = 1 net.bridge.bridge-nf-call-ip6tables = 1 net.ipv4.ip_forward = 1 EOF sudo sysctl --system # Runtime echo "Prepare runtime to setup containerd..." sudo mkdir /etc/containerd sudo sh -c "containerd config default > /etc/containerd/config.toml" sudo sed -i 's/ SystemdCgroup = false/ SystemdCgroup = true/' /etc/containerd/config.toml sudo systemctl restart containerd.service sudo systemctl restart kubelet.service # K8S curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes.gpg echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/kubernetes.gpg] http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list sudo apt update DEBIAN_FRONTEND=noninteractive sudo apt install kubeadm kubelet kubectl kubernetes-cni -y # Init (Only on Master) sudo kubeadm config images pull sudo kubeadm init --pod-network-cidr=10.244.0.0/16 read -p "Please copy the kubeadm join command above and run it on worker nodes. Press any key to continue..." # Config (Only on Master) mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config # Calico (Only on Master) kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.27.0/manifests/tigera-operator.yaml curl https://raw.githubusercontent.com/projectcalico/calico/v3.27.0/manifests/custom-resources.yaml -O sed -i 's/cidr: 192\.168\.0\.0\/16/cidr: 10\.244\.0\.0\/16/' custom-resources.yaml kubectl create -f custom-resources.yaml sudo systemctl restart kubelet.service # Test (Only on Master) kubectl get nodes -o wide kubectl get pods --all-namespaces

1	#/bin/bash
2	# This script is to install Kubernetes on Ubuntu 22.04 LTS, with Calico as CNI
3	# This script used 10.244.0.0/16 as pod network CIDR. This network should not be used in your physical network.
4	# This script used Calico v3.27.0. You can change it to the latest version.
5
6	# Prerequisites
7	DEBIAN_FRONTEND=noninteractive sudo apt update
8	DEBIAN_FRONTEND=noninteractive sudo apt install curl gnupg2 software-properties-common apt-transport-https ca-certificates -y
9
10	# Docker
11	echo "Install Docker..."
12	DEBIAN_FRONTEND=noninteractive sudo apt install docker.io -y
13
14	# Network
15	echo "Prepare network..."
16	cat <<EOF \| sudo tee /etc/modules-load.d/k8s.conf
17	overlay
18	br_netfilter
19	EOF
20	sudo modprobe overlay
21	sudo modprobe br_netfilter
22	# sysctl params required by setup, params persist across reboots
23	cat <<EOF \| sudo tee /etc/sysctl.d/k8s.conf
24	net.bridge.bridge-nf-call-iptables = 1
25	net.bridge.bridge-nf-call-ip6tables = 1
26	net.ipv4.ip_forward = 1
27	EOF
28	sudo sysctl --system
29
30	# Runtime
31	echo "Prepare runtime to setup containerd..."
32	sudo mkdir /etc/containerd
33	sudo sh -c "containerd config default > /etc/containerd/config.toml"
34	sudo sed -i 's/ SystemdCgroup = false/ SystemdCgroup = true/' /etc/containerd/config.toml
35	sudo systemctl restart containerd.service
36	sudo systemctl restart kubelet.service
37
38	# K8S
39	curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg \| sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes.gpg
40	echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/kubernetes.gpg] http://apt.kubernetes.io/ kubernetes-xenial main" \| sudo tee -a /etc/apt/sources.list
41	sudo apt update
42	DEBIAN_FRONTEND=noninteractive sudo apt install kubeadm kubelet kubectl kubernetes-cni -y
43
44	# Init (Only on Master)
45	sudo kubeadm config images pull
46	sudo kubeadm init --pod-network-cidr=10.244.0.0/16
47	read -p "Please copy the kubeadm join command above and run it on worker nodes. Press any key to continue..."
48
49	# Config (Only on Master)
50	mkdir -p $HOME/.kube
51	sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
52	sudo chown $(id -u):$(id -g) $HOME/.kube/config
53
54	# Calico (Only on Master)
55	kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.27.0/manifests/tigera-operator.yaml
56	curl https://raw.githubusercontent.com/projectcalico/calico/v3.27.0/manifests/custom-resources.yaml -O
57	sed -i 's/cidr: 192\.168\.0\.0\/16/cidr: 10\.244\.0\.0\/16/' custom-resources.yaml
58	kubectl create -f custom-resources.yaml
59	sudo systemctl restart kubelet.service
60
61	# Test (Only on Master)
62	kubectl get nodes -o wide
63	kubectl get pods --all-namespaces