From 4ad27adec1fbf31ae9cbb3ea8b1929aebcf0746b Mon Sep 17 00:00:00 2001
From: tehNooB <125163838+JamesTurland@users.noreply.github.com>
Date: Mon, 16 Oct 2023 15:59:04 +0100
Subject: [PATCH] Update k3s.sh

---
 Kubernetes/K3S-Deploy/k3s.sh | 202 ++++++++++++++++++++++++++++++++++-
 1 file changed, 201 insertions(+), 1 deletion(-)

diff --git a/Kubernetes/K3S-Deploy/k3s.sh b/Kubernetes/K3S-Deploy/k3s.sh
index 3c0b0b0..ec5c8e7 100644
--- a/Kubernetes/K3S-Deploy/k3s.sh
+++ b/Kubernetes/K3S-Deploy/k3s.sh
@@ -1 +1,201 @@
-Coming soon
+#!/bin/bash
+
+echo -e " \033[33;5m    __  _          _        ___                            \033[0m"
+echo -e " \033[33;5m    \ \(_)_ __ ___( )__    / _ \__ _ _ __ __ _  __ _  ___  \033[0m"
+echo -e " \033[33;5m     \ \ | '_ \` _ \/ __|  / /_\/ _\` | '__/ _\` |/ _\` |/ _ \ \033[0m"
+echo -e " \033[33;5m  /\_/ / | | | | | \__ \ / /_\\  (_| | | | (_| | (_| |  __/ \033[0m"
+echo -e " \033[33;5m  \___/|_|_| |_| |_|___/ \____/\__,_|_|  \__,_|\__, |\___| \033[0m"
+echo -e " \033[33;5m                                               |___/       \033[0m"
+
+echo -e " \033[36;5m         _  _________   ___         _        _ _           \033[0m"
+echo -e " \033[36;5m        | |/ |__ / __| |_ _|_ _  __| |_ __ _| | |          \033[0m"
+echo -e " \033[36;5m        | ' < |_ \__ \  | || ' \(_-|  _/ _\` | | |          \033[0m"
+echo -e " \033[36;5m        |_|\_|___|___/ |___|_||_/__/\__\__,_|_|_|          \033[0m"
+echo -e " \033[36;5m                                                           \033[0m"
+echo -e " \033[32;5m             https://youtube.com/@jims-garage              \033[0m"
+echo -e " \033[32;5m                                                           \033[0m"
+
+
+#############################################
+# YOU SHOULD ONLY NEED TO EDIT THIS SECTION #
+#############################################
+
+# Version of Kube-VIP to deploy
+KVVERSION="v0.6.3"
+
+# Set the IP addresses of the master and work nodes
+master1=192.168.3.21
+master2=192.168.3.22
+master3=192.168.3.23
+worker1=192.168.3.24
+worker2=192.168.3.25
+
+# User of remote machines
+user=ubuntu
+
+# Interface used on remotes
+interface=eth0
+
+# Set the virtual IP address (VIP)
+vip=192.168.3.50
+
+# Array of master nodes
+masters=($master2 $master3)
+
+# Array of worker nodes
+workers=($worker1 $worker2)
+
+# Array of all
+all=($master1 $master2 $master3 $worker1 $worker2)
+
+# Array of all minus master
+allnomaster1=($master2 $master3 $worker1 $worker2)
+
+#Loadbalancer IP range
+lbrange=192.168.3.60-192.168.3.80
+
+#############################################
+#            DO NOT EDIT BELOW              #
+#############################################
+# For testing purposes - in case time is wrong due to VM snapshots
+sudo timedatectl set-ntp off
+sudo timedatectl set-ntp on
+
+# Move SSH certs to ~/.ssh and change permissions
+cp /home/$user/{id_rsa,id_rsa.pub} /home/$user/.ssh
+chmod 600 /home/$user/.ssh/id_rsa /home/$user/.ssh/id_rsa.pub
+
+# Install k3sup to local machine if not already present
+if ! command -v k3sup version &> /dev/null
+then
+    echo -e " \033[31;5mk3sup not found, installing\033[0m"
+    curl -sLS https://get.k3sup.dev | sh
+    sudo install k3sup /usr/local/bin/
+else
+    echo -e " \033[32;5mk3sup already installed\033[0m"
+fi
+
+# Install Kubectl if not already present
+if ! command -v kubectl version &> /dev/null
+then
+    echo -e " \033[31;5mKubectl not found, installing\033[0m"
+    curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+    sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
+else
+    echo -e " \033[32;5mKubectl already installed\033[0m"
+fi
+
+# Install Docker to generate manifest and daemonset if not already present
+if ! command -v docker version &> /dev/null
+then
+    echo -e " \033[31;5mDocker not found, installing\033[0m"
+    curl -fsSL https://get.docker.com -o get-docker.sh
+    sudo sh get-docker.sh
+    wait $!
+else
+    echo -e " \033[32;5mDocker already installed\033[0m"
+fi
+
+# Create SSH Config file to ignore checking (don't use in production!)
+echo "StrictHostKeyChecking no" > ~/.ssh/config
+
+#add ssh keys for all nodes
+for node in "${all[@]}"; do
+  ssh-copy-id ubuntu@$node
+done
+
+# Step 1: Bootstrap First k3s Node
+mkdir ~/.kube
+k3sup install \
+  --ip $master1 \
+  --user $user \
+  --tls-san $vip \
+  --cluster \
+  --k3s-channel stable \
+  --k3s-extra-args "--disable traefik --disable servicelb --flannel-iface=eth0 --node-ip=$master1" \
+  --merge \
+  --sudo \
+  --local-path $HOME/.kube/config \
+  --ssh-key $HOME/.ssh/id_rsa \
+  --context k3s-ha
+echo -e " \033[32;5mFirst Node bootstrapped successfully!\033[0m"
+
+
+
+# Step 2: Install Kube-VIP for HA
+
+kubectl k3s-ha
+kubectl apply -f https://kube-vip.io/manifests/rbac.yaml
+
+# Step 3: Generate Daemonset with Docker
+sudo docker run --network host --rm ghcr.io/kube-vip/kube-vip:$KVVERSION manifest daemonset \
+    --interface $interface \
+    --address $vip \
+    --inCluster \
+    --taint \
+    --controlplane \
+    --services \
+    --arp \
+    --leaderElection | tee $HOME/kube-vip.yaml
+
+# Step 4: Copy kube-vip.yaml to master1
+scp -i ~/.ssh/id_rsa kube-vip.yaml $user@$master1:~/kube-vip.yaml
+
+
+# Step 5: Connect to Master1 and move kube-vip.yaml
+
+ssh $user@$master1 -i ~/.ssh/id_rsa <<- EOF
+  sudo mkdir -p /var/lib/rancher/k3s/server/manifests
+  sudo mv kube-vip.yaml /var/lib/rancher/k3s/server/manifests/kube-vip.yaml
+EOF
+
+# Step 6: Add new master nodes (servers)
+for newnode in "${masters[@]}"; do
+  k3sup join \
+    --ip $newnode \
+    --user $user \
+    --sudo \
+    --k3s-channel stable \
+    --server \
+    --server-ip $master1 \
+    --ssh-key $HOME/.ssh/id_rsa \
+    --k3s-extra-args "--disable traefik --disable servicelb --flannel-iface=$interface --node-ip=$newnode" \
+    --server-user $user
+  echo -e " \033[32;5mMaster node joined successfully!\033[0m"
+done
+
+for newagent in "${workers[@]}"; do
+  k3sup join \
+    --ip $newagent \
+    --user $user \
+    --sudo \
+    --k3s-channel stable \
+    --server-ip $master1 \
+    --ssh-key $HOME/.ssh/id_rsa
+  echo -e " \033[32;5mAgent node joined successfully!\033[0m"
+done
+
+# Step 7: Install kube-vip as network LoadBalancer - Install the kube-vip Cloud Provider
+kubectl apply -f https://raw.githubusercontent.com/kube-vip/kube-vip-cloud-provider/main/manifest/kube-vip-cloud-controller.yaml
+
+#IP range for loadbalancer services to use
+kubectl create configmap -n kube-system kubevip --from-literal range-global=$lbrange
+
+# Step 8: Test with Nginx
+kubectl apply -f https://raw.githubusercontent.com/inlets/inlets-operator/master/contrib/nginx-sample-deployment.yaml -n default
+kubectl expose deployment nginx-1 --port=80 --type=LoadBalancer -n default
+
+echo -e " \033[32;5mWaiting 20s for K3S to sync and LoadBalancer to come online\033[0m"
+
+secs=20
+while [ $secs -gt 0 ]; do
+   echo -ne "$secs\033[0K\r"
+   sleep 1
+   : $((secs--))
+done
+
+kubectl get nodes
+kubectl get svc
+kubectl get pods --all-namespaces -o wide
+
+echo -e " \033[32;5mHappy Kubing! Access Nginx at EXTERNAL-IP above\033[0m"