53 lines
2.0 KiB
Bash
53 lines
2.0 KiB
Bash
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#!/bin/bash
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cat << "EOF"
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_ _ _ _
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(_) (_) | | | |
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_ __ _ __ _ _ __ _ | |_ __| | ___ __ __
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| | / _` | / _` | | '__| | | | __| / _` | / _ \ \ \ / /
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| | | (_| | | (_| | | | | | | |_ _ | (_| | | __/ \ V /
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| | \__,_| \__, | |_| |_| \__| (_) \__,_| \___| \_/
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_/ | __/ |
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|__/ |___/
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Kubernetes Setup Script for Master Node
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Script source: https://github.com/techiescamp
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EOF
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# If you need public access to API server using the servers Public IP adress, change PUBLIC_IP_ACCESS to true.
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PUBLIC_IP_ACCESS="true"
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NODENAME=$(hostname -s)
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POD_CIDR="192.168.0.0/16"
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# Pull required images
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sudo kubeadm config images pull
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# Initialize kubeadm based on PUBLIC_IP_ACCESS
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if [[ "$PUBLIC_IP_ACCESS" == "false" ]]; then
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MASTER_PRIVATE_IP=$(ip addr show eth0 | awk '/inet / {print $2}' | cut -d/ -f1)
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sudo kubeadm init --apiserver-advertise-address="$MASTER_PRIVATE_IP" --apiserver-cert-extra-sans="$MASTER_PRIVATE_IP" --pod-network-cidr="$POD_CIDR" --node-name "$NODENAME" --ignore-preflight-errors Swap
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elif [[ "$PUBLIC_IP_ACCESS" == "true" ]]; then
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MASTER_PUBLIC_IP=$(curl ifconfig.me && echo "")
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sudo kubeadm init --control-plane-endpoint="$MASTER_PUBLIC_IP" --apiserver-cert-extra-sans="$MASTER_PUBLIC_IP" --pod-network-cidr="$POD_CIDR" --node-name "$NODENAME" --ignore-preflight-errors Swap
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else
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echo "Error: MASTER_PUBLIC_IP has an invalid value: $PUBLIC_IP_ACCESS"
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exit 1
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fi
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# Configure kubeconfig
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mkdir -p "$HOME"/.kube
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sudo cp -i /etc/kubernetes/admin.conf "$HOME"/.kube/config
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sudo chown "$(id -u)":"$(id -g)" "$HOME"/.kube/config
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# Install Claico Network Plugin Network
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kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
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