From 657f8e52665c5ba6e8b223c17c90fba1d2cc5544 Mon Sep 17 00:00:00 2001
From: ghe0 <gheorghe@gheo.tech>
Date: Wed, 12 Mar 2025 20:15:05 +0200
Subject: [PATCH] added kubernetes example

---
 kubernetes/README.md     | 14 ++++++++++++++
 kubernetes/create_vms.sh | 36 ++++++++++++++++++++++++++++++++++++
 kubernetes/deploy.sh     | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+)
 create mode 100644 kubernetes/README.md
 create mode 100755 kubernetes/create_vms.sh
 create mode 100755 kubernetes/deploy.sh

diff --git a/kubernetes/README.md b/kubernetes/README.md
new file mode 100644
index 0000000..3c590f7
--- /dev/null
+++ b/kubernetes/README.md
@@ -0,0 +1,14 @@
+# WireGuard cluster example
+
+This example will create 5 kubernetes nodes using k3s: a master and 4 workers.
+All VMs have public IPs, which can be used to publish ports.
+
+To create the VMs, run:
+```
+./create_vms.sh
+```
+
+And to deploy:
+```
+./deploy.sh
+```
diff --git a/kubernetes/create_vms.sh b/kubernetes/create_vms.sh
new file mode 100755
index 0000000..84ed687
--- /dev/null
+++ b/kubernetes/create_vms.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+set -e
+mkdir -p tmp
+
+detee-cli vm deploy --hostname k3s-master --vcpus 4 \
+  --memory 4000 --disk 20 --location Random --public-ip |
+  tail -1 > tmp/master_ssh_command &&
+  echo "k3s-master successfully created" &
+sleep 1
+
+detee-cli vm deploy --hostname k3s-node-1 --vcpus 4 \
+  --memory 4000 --disk 20 --location Random --public-ip |
+  tail -1 > tmp/node1_ssh_command &&
+  echo "k3s-node-1 successfully created" &
+sleep 1
+
+detee-cli vm deploy --hostname k3s-node-2 --vcpus 4 \
+  --memory 4000 --disk 20 --location Random --public-ip |
+  tail -1 > tmp/node2_ssh_command &&
+  echo "k3s-node-2 successfully created" &
+sleep 1
+
+detee-cli vm deploy --hostname k3s-node-3 --vcpus 4 \
+  --memory 4000 --disk 20 --location Random --public-ip |
+  tail -1 > tmp/node3_ssh_command &&
+  echo "k3s-node-3 successfully created" &
+sleep 1
+
+detee-cli vm deploy --hostname k3s-node-4 --vcpus 4 \
+  --memory 4000 --disk 20 --location Random --public-ip |
+  tail -1 > tmp/node4_ssh_command &&
+  echo "k3s-node-4 successfully created" &
+
+wait
+
+
diff --git a/kubernetes/deploy.sh b/kubernetes/deploy.sh
new file mode 100755
index 0000000..a97d466
--- /dev/null
+++ b/kubernetes/deploy.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+ssh_master=$(cat tmp/master_ssh_command)
+ssh_node1=$(cat tmp/node1_ssh_command)
+ssh_node2=$(cat tmp/node2_ssh_command)
+ssh_node3=$(cat tmp/node3_ssh_command)
+ssh_node4=$(cat tmp/node4_ssh_command)
+sleep 5
+echo Master SSH command: $ssh_master | grep ssh
+
+$ssh_master curl -o /root/get_k3s.sh https://get.k3s.io 
+$ssh_master chmod +x /root/get_k3s.sh
+$ssh_node1 curl -o /root/get_k3s.sh https://get.k3s.io 
+$ssh_node1 chmod +x /root/get_k3s.sh
+$ssh_node2 curl -o /root/get_k3s.sh https://get.k3s.io 
+$ssh_node2 chmod +x /root/get_k3s.sh
+$ssh_node3 curl -o /root/get_k3s.sh https://get.k3s.io 
+$ssh_node3 chmod +x /root/get_k3s.sh
+$ssh_node4 curl -o /root/get_k3s.sh https://get.k3s.io 
+$ssh_node4 chmod +x /root/get_k3s.sh
+
+$ssh_master /root/get_k3s.sh server --cluster-init
+master_ip=$(echo $ssh_master | cut -d '@' -f2)
+sleep 10
+token=$($ssh_master cat /var/lib/rancher/k3s/server/node-token)
+
+worker_cmd="K3S_URL='https://${master_ip}:6443' K3S_TOKEN='${token}' /root/get_k3s.sh"
+
+$ssh_node1 $worker_cmd &
+$ssh_node2 $worker_cmd &
+$ssh_node3 $worker_cmd &
+$ssh_node4 $worker_cmd &
+
+sleep 20
+
+echo
+echo KUBERNETES INSTALLED! PLEASE FIND BELOW THE ACTIVE NODES AND PODS:
+$ssh_master kubectl get nodes,pods -A
+
+echo You can SSH into the nodes to run kubectl commands:
+cat tmp/*_command