Automate Template Creation & Cloning

.gitignore

@@ -0,0 +1,6 @@
+Kubernetes/K3S-Deploy/kubectl
+Kubernetes/K3S-Deploy/kube-vip.yaml
+Kubernetes/K3S-Deploy/ipAddressPool.yaml
+Kubernetes/K3S-Deploy/k3sup
+Kubernetes/Traefik-PiHole/Helm/Traefik/Cert-Manager/Issuers/secret-cf-token.yaml
+Kubernetes/Traefik-PiHole/Helm/Traefik/Dashboard/secret-dashboard.yaml

Kubernetes/Cloud-Init/create-clones.sh

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+#!/bin/bash
+
+###########################
+# DEFAULT VALUES          #
+###########################
+# Template VMID
+template_id=5000
+# Number of VMs to be created
+vm_number=5
+# The first VM id, smallest id is 100
+id=1001
+# Name prefix of the first VM
+name=k3s
+
+drive_name=local-zfs
+disk_size=10G
+custom_macs=()
+
+##################
+# Functions      #
+##################
+function run() {
+    get_user_variables
+    print_info # Prints information about what will be created based on defaults/user inputs
+    setup      # Do not worry it asks for confirmation before the setup/installation starts
+    start_vms  # You can choose to start all VMs if you want
+    print_vm_status
+}
+
+function get_user_variables() {
+    cnt=1
+    while [ $cnt -eq 1 ] || [[ $(qm list | grep $template_id | cut -c 1-10 | xargs) != $template_id ]]; do
+        if [ $cnt -gt 1 ]; then
+            echo -e "\e[1;31mVM Template $template_id not found.\e[0m"
+        fi
+        echo -e "\e[36mWhich VMID template? (q to quit)\e[0m"
+        read -e -p "" -i $template_id template_id
+        if [ $template_id == "q" ]; then
+            echo -e "\e[31mInstallation aborted by user. No changes were made.\e[0m"
+            exit
+        fi
+        cnt+=1
+    done
+    echo -e "\e[36mHow many VM do you want to create? \e[0m"
+    read -e -p "" -i "$vm_number" vm_number
+    echo -e "\e[36mFirst VM ID? (minimum 100)\e[0m"
+    read -e -p "" -i $id id
+    echo -e "\e[36mVM name prefix? \e[0m"
+    read -e -p "" -i $name name
+    echo -e "\e[36mDisk Size? \e[0m"
+    read -e -p "" -i $disk_size disk_size
+    customize=n
+    echo -e "\e[36mCustomize MAC addresses? \e[0m"
+    read -e -p "" -i $customize customize
+    case $customize in
+    [Yy]*)
+        for ((i = 1; i <= $vm_number; i++)); do
+            if [[ $i -le 9 ]]; then
+                idx="0$i"
+            else
+                idx=$i
+            fi
+            # Get a random valid MAC address for PVE as a suggestion
+            # tweaked from https://serverfault.com/questions/40712/what-range-of-mac-addresses-can-i-safely-use-for-my-virtual-machines#comment1485911_40720
+            # loop until the proper length mac address is formed since /dev/urandom is a stream
+            mac_start=$(cat /etc/pve/qemu-server/$template_id.conf | grep virtio | grep net | cut -c 14-22)
+            mac=""
+            until [[ ${#mac} == 17 ]]
+            do
+                mac="$mac_start$(od -vAn -N6 -tu1 < /dev/urandom | tr -d -c '[:digit:]A-F' | fold -w 12 | sed -E -n -e '/^.[26AE]/s/(..)/\1:/gp' | sed -e 's/:$//g')"
+            done
+
+            echo -n -e "  \e[46m$name-$idx\e[0m\e[36m MAC address:\e[0m "
+            read -e -p "" -i $mac mac
+            custom_macs+=($mac)
+        done
+        ;;
+    *) ;;
+    esac
+
+}
+
+function print_info() {
+    echo -e "\e[36m\nThe following Virtual Machines will be created:\e[0m"
+    for ((i = 1; i <= $vm_number; i++)); do
+        if [[ $i -le 9 ]]; then
+            idx="0$i"
+        else
+            idx=$i
+        fi
+        echo -n -e "\e[32mVM ID: $(($id + $i - 1)), Name: $name-$idx"
+        case $customize in
+        [Yy]*)
+            echo -e ", MAC: ${custom_macs[$i-1]}\e[0m"
+            ;;
+        *)
+            echo "\e[32m\e[0m"
+            ;;
+        esac
+    done
+    echo -e "\e[32mDisk size:\e[0m" "$disk_size""B"
+}
+
+function setup() {
+    yesno=n
+    echo -e "\e[36mDo you want to proceed with the setup? (y/n) \e[0m"
+    read -e -p "" -i $yesno yesno
+    case $yesno in
+    [Yy]*)
+        create_vms
+        print_vm_status
+
+        echo -e "\n\e[94;43;5mMake any needed updates to DHCP reservations now...\e[0m\n"
+        ;;
+    [Nn]*)
+        echo -e "\e[31mInstallation aborted by user. No changes were made.\e[0m"
+        exit
+        ;;
+    *) ;;
+    esac
+}
+
+function create_vms() {
+    for ((i = 1; i <= $vm_number; i++)); do
+        # Create VM from the template
+        if [[ $i -le 9 ]]; then
+            idx="0$i"
+        else
+            idx=$i
+        fi
+        echo -e "\e[33mCreating Virtual Machine: $idx\e[0m"
+        echo "VM ID: $(($id + $i - 1)), Name: $name-$idx, Cloning ID: $template_id"
+        qm clone $template_id $(($id + $i - 1)) \
+            --name $name-$idx \
+            --full
+        echo -e "\e[33mResizing disk to $disk_size...\e[0m"
+        qm disk resize $(($id + $i - 1)) scsi0 $disk_size
+        case $customize in
+        [Yy]*)
+            echo -e "\e[33mSetting MAC address to ${custom_macs[$i-1]}...\e[0m"
+            oldMac=$(cat /etc/pve/qemu-server/$(($id + $i - 1)).conf | grep virtio | grep net | cut -c 14-30)
+            sed -i "s/$oldMac/${custom_macs[$i-1]}/g" /etc/pve/qemu-server/$(($id + $i - 1)).conf
+            ;;
+        *) ;;
+        esac
+    done
+}
+
+function start_vms() {
+    yesno=n
+    echo -e "\e[36mDo you want to start up the Virtual Machines now? (y/n) \e[0m"
+    read -e -p "" -i $yesno yesno
+    case $yesno in
+    [Yy]*)
+        # Start VMs
+        for ((i = 1; i <= $vm_number; i++)); do
+            if [[ $i -le 9 ]]; then
+                idx="0$i"
+            else
+                idx=$i
+            fi
+            echo -e "\e[33mStarting Virtual Machine $idx\e[0m"
+            qm start $(($id + $i - 1))
+        done
+
+        # Typically after the first cloud-init boot, there will be updates to apply
+        # Wait 60s before offering
+        echo -e "\e[33mWaiting for VMs to start...(60s)\e[0m"
+        for ((i=60; i >- 0; i--)); do
+            echo -e "\e[1A\e[K\e[33mWaiting for VMs to start...($i s)\e[0m"
+            sleep 1
+        done
+
+        restart_vms
+        ;;
+    [Nn]*)
+        exit
+        ;;
+    *) ;;
+    esac
+}
+
+function restart_vms() {
+    yesno=n
+    echo -e "\e[36mDo you want to restart the Virtual Machines now to apply updates? (y/n) \e[0m"
+    read -e -p "" -i $yesno yesno
+    case $yesno in
+    [Yy]*)
+        for ((i = 1; i <= $vm_number; i++)); do
+            if [[ $i -le 9 ]]; then
+                idx="0$i"
+            else
+                idx=$i
+            fi
+            echo -e "\e[33mInitial reboot of Virtual Machine $idx to apply updates...\e[0m"
+            qm reboot $(($id + $i - 1))
+        done
+
+        echo -e "\e[33mWaiting for VMs to restart...(30s)\e[0m"
+        for ((i=30; i >- 0; i--)); do
+            echo -e "\e[1A\e[K\e[33mWaiting for VMs to start...($i s)\e[0m"
+            sleep 1
+        done
+        ;;
+    [Nn]*)
+        exit
+        ;;
+    *) ;;
+    esac
+}
+
+function print_vm_status() {
+        # Print VMs info
+        echo -e "\n\n\e[95m   Virtual Machine  \e[0m|\e[35m    MAC Address    \e[0m|\e[35m  Status\e[0m"
+        echo -e "-----------------------------------------------------"
+        for ((i = 1; i <= $vm_number; i++)); do
+            if [[ $i -le 9 ]]; then
+                idx="0$i"
+            else
+                idx=$i
+            fi
+            printf "%18.18s" "$name-$idx"
+            echo -n "  | $(cat /etc/pve/qemu-server/$(($id + $i - 1)).conf | grep virtio | grep net | cut -c 14-30) |  "
+            qm status $(($id + $i - 1)) | sed 's/status: //'
+        done
+        echo -e "\n\n"
+}
+
+#########################
+# Run the script        #
+#########################
+run