58 lines
2.0 KiB
Bash
Executable File
58 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# kubeadm installation instructions as on
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# https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
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# this script supports Ubuntu 20.04 LTS and later only
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# run this script with sudo
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if ! [ -f /tmp/container.txt ]
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then
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echo run ./setup-container.sh before running this script
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exit 4
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fi
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# setting MYOS variable
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MYOS=$(hostnamectl | awk '/Operating/ { print $3 }')
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OSVERSION=$(hostnamectl | awk '/Operating/ { print $4 }')
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# detecting latest Kubernetes version
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KUBEVERSION=$(curl -s https://api.github.com/repos/kubernetes/kubernetes/releases/latest | jq -r '.tag_name')
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KUBEVERSION=${KUBEVERSION%.*}
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# setting previous version
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VERSION=${KUBEVERSION#*.}
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PREVIOUSVERSION=$(( VERSION - 1 ))
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PREVIOUSVERSION=v1.${PREVIOUSVERSION}
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if [ $MYOS = "Ubuntu" ]
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then
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echo RUNNING UBUNTU CONFIG
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cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
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br_netfilter
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EOF
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sudo apt-get update && sudo apt-get install -y apt-transport-https curl
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curl -fsSL https://pkgs.k8s.io/core:/stable:/${PREVIOUSVERSION}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
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echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/${PREVIOUSVERSION}/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
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sleep 2
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sudo apt-get update
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sudo apt-get install -y kubelet kubeadm kubectl
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sudo apt-mark hold kubelet kubeadm kubectl
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sudo swapoff -a
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sudo sed -i 's/\/swap/#\/swap/' /etc/fstab
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fi
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# Set iptables bridging
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sudo cat <<EOF > /etc/sysctl.d/k8s.conf
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net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1
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EOF
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sudo sysctl --system
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sudo crictl config --set \
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runtime-endpoint=unix:///run/containerd/containerd.sock
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echo 'after initializing the control node, follow instructions and use kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml to install the calico plugin (control node only). On the worker nodes, use sudo kubeadm join ... to join'
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