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Add master script 

source: https://github.com/techiescamp/kubeadm-scripts/blob/main/scripts/master.sh
This commit is contained in:
Jagrit Thapar 2024-07-09 16:01:55 +05:30
parent 57a7b81610
commit 833b981b07
1 changed files with 53 additions and 0 deletions
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scripts/1-master.sh Executable file
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#!/bin/bash
cat << "EOF"
_ _ _ _
(_) (_) | | | |
_ __ _ __ _ _ __ _ | |_ __| | ___ __ __
| | / _` | / _` | | '__| | | | __| / _` | / _ \ \ \ / /
| | | (_| | | (_| | | | | | | |_ _ | (_| | | __/ \ V /
| | \__,_| \__, | |_| |_| \__| (_) \__,_| \___| \_/
_/ | __/ |
|__/ |___/
Kubernetes Setup Script for Master Node
Script source: https://github.com/techiescamp
EOF
# If you need public access to API server using the servers Public IP adress, change PUBLIC_IP_ACCESS to true.
PUBLIC_IP_ACCESS="true"
NODENAME=$(hostname -s)
POD_CIDR="192.168.0.0/16"
# Pull required images
sudo kubeadm config images pull
# Initialize kubeadm based on PUBLIC_IP_ACCESS
if [[ "$PUBLIC_IP_ACCESS" == "false" ]]; then
MASTER_PRIVATE_IP=$(ip addr show eth0 | awk '/inet / {print $2}' | cut -d/ -f1)
sudo kubeadm init --apiserver-advertise-address="$MASTER_PRIVATE_IP" --apiserver-cert-extra-sans="$MASTER_PRIVATE_IP" --pod-network-cidr="$POD_CIDR" --node-name "$NODENAME" --ignore-preflight-errors Swap
elif [[ "$PUBLIC_IP_ACCESS" == "true" ]]; then
MASTER_PUBLIC_IP=$(curl ifconfig.me && echo "")
sudo kubeadm init --control-plane-endpoint="$MASTER_PUBLIC_IP" --apiserver-cert-extra-sans="$MASTER_PUBLIC_IP" --pod-network-cidr="$POD_CIDR" --node-name "$NODENAME" --ignore-preflight-errors Swap
else
echo "Error: MASTER_PUBLIC_IP has an invalid value: $PUBLIC_IP_ACCESS"
exit 1
fi
# Configure kubeconfig
mkdir -p "$HOME"/.kube
sudo cp -i /etc/kubernetes/admin.conf "$HOME"/.kube/config
sudo chown "$(id -u)":"$(id -g)" "$HOME"/.kube/config
# Install Claico Network Plugin Network
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml