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Add create-vms.sh script with a short readme.
This commit is contained in:
Peter Fodor
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2 changed files with 310 additions and 0 deletions
301
Kubernetes/Create-VMS/create-vms.sh
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301
Kubernetes/Create-VMS/create-vms.sh
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#!/bin/bash
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# for Debian this must be installed for Longhorn to work
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# sudo apt-get install -y open-iscsi
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###########################
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# DEFAULT VALUES #
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###########################
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os_options=("Debian" "Ubuntu")
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os="Debian"
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# Proxmox path to the template folder
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template_path="/var/lib/vz/template"
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# Proxmox certificate path
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cert_path="/root/.ssh"
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# Number of VMs to be created
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vm_number=3
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# The first VM id, smallest id is 100
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id=121
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# Name prefix of the first VM
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name=k3s
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drive_name=local-zfs
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agent=0 # TODO: Implement User Option for it
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disk_size=20G
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memory=2048
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core=2
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# IP for the first VM
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ip=192.168.0.21
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gateway=192.168.0.1
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# ssh certificate name variable
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cert_name=id_rsa
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# User settings
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user=$USER
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password=password
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ubuntu_url=https://cloud-images.ubuntu.com/lunar/current/lunar-server-cloudimg-amd64.img
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ubuntu_filename=lunar-server-cloudimg-amd64.img
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debian_url=https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-genericcloud-amd64.qcow2
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debian_filename=debian-12-genericcloud-amd64.qcow2
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os_url=https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-genericcloud-amd64.qcow2
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os_filename=debian-12-genericcloud-amd64.qcow2
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##################
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# Functions #
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##################
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function run() {
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get_user_variables
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print_info # Prints information about what will be created based on defaults/user inputs
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setup # Do not worry it asks for confirmation before the setup/installation starts
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start_vms # You can choose to start all VMs if you want
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#qemu_agent # Not implemented yet, you can choose to add qemu-agent to the installation image
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}
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function get_user_variables() {
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echo -e -n "\e[36mWhich OS cloud image would you like to use?\n\e[0m"
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PS3=""
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select option in "${os_options[@]}"; do
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# Check if the user selected an option
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if [[ -n "$option" ]]; then
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# Do something with the selected option
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case $option in
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"Debian") ;;
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"Ubuntu") ;;
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*)
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echo -e "\e[31mInvalid option selected. Exiting...\e[0m"
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exit
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;;
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esac
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else
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# No option was selected
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echo -e "\e[31mNo option was selected. Exiting...\e[0m"
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exit
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fi
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# Set the selected Operating system
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os=$option
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# Exit the select loop
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break
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done
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echo -e "\e[36mHow many VM do you want to create? \e[0m"
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read -e -p "" -i "$vm_number" vm_number
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echo -e "\e[36mFirst VM ID? (minimum 100)\e[0m"
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read -e -p "" -i $id id
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echo -e "\e[36mVM name prefix? \e[0m"
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read -e -p "" -i $name name
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echo -e "\e[36mIP address? \e[0m"
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read -e -p "" -i $ip ip
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# Split the IP address into its parts using the '.' character as the delimiter.
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ip_address_parts=(${ip//./ })
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octet1=${ip_address_parts[0]}
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octet2=${ip_address_parts[1]}
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octet3=${ip_address_parts[2]}
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octet4=${ip_address_parts[3]}
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echo -e "\e[36mGateway? \e[0m"
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read -e -p "" -i $gateway gateway
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echo -e "\e[36mDisk Size? \e[0m"
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read -e -p "" -i $disk_size disk_size
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echo -e "\e[36mMemory Size? \e[0m"
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read -e -p "" -i $memory memory
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echo -e "\e[36mNumber of processor cores? \e[0m"
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read -e -p "" -i $core core
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echo -e "\e[36mUser name? \e[0m"
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read -e -p "" -i $user user
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echo -e "\e[36mUser password? \e[0m"
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read -e -p "" -i $password password
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echo -e "\e[36mCertification name? \e[0m"
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read -e -p "" -i $cert_name cert_name
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echo -e "\e[36mDrive name to store images? \e[0m"
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read -e -p "" -i $drive_name drive_name
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}
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#
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function qemu_agent() {
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yesno=n
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echo -e "\e[36mDo you want to add qemu agent to the VM images? (y/n) \e[0m"
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read -e -p "" -i $yesno yesno
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case $yesno in
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[Yy]*)
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# Install qemu agent packages for each VM
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echo -e "\e[32mInstalling qemu agent packages.\e[0m"
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for ((i = 1; i <= $vm_number; i++)); do
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if [[ $i -le 9 ]]; then
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idx="0$i"
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else
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idx=$i
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fi
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# TODO: ssh into all VMs one by one and intalll the necessary qemu agent packages
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done
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;;
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[Nn]*)
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echo -e "\e[33mSkipping qemu agent installation.\e[0m"
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;;
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*) ;;
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esac
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}
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function print_info() {
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echo -e "\e[36m\nThe following Virtual Machines will be created:\e[0m"
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for ((i = 1; i <= $vm_number; i++)); do
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if [[ $i -le 9 ]]; then
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idx="0$i"
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else
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idx=$i
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fi
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echo -e "\e[32mVM ID: $(($id + $i - 1)), Name: $name-$idx, IP address: $octet1.$octet2.$octet3.$(($octet4 + $i - 1))\e[0m"
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done
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echo -e "\e[36m\nCommon VM parameters:\e[0m"
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echo -e "\e[32mOS cloud image:\e[0m" "$os"
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echo -e "\e[32mPublic Proxmox Certificate:\e[0m" "$cert_path/$cert_name.pub\n"
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echo -e "\e[32mGateway:\e[0m" "$gateway"
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echo -e "\e[32mDisk size:\e[0m" "$disk_size""B"
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echo -e "\e[32mMemory size:\e[0m" "$memory""GB"
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echo -e "\e[32mCPU cores:\e[0m" "$core"
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echo -e "\e[32mDrive name:\e[0m" "$drive_name"
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}
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function setup() {
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yesno=n
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echo -e "\e[36mDo you want to proceed with the setup? (y/n) \e[0m"
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read -e -p "" -i $yesno yesno
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case $yesno in
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[Yy]*)
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get_os_image
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create_vms
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;;
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[Nn]*)
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echo -e "\e[31mInstallation aborted by user. No changes were made.\e[0m"
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exit
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;;
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*) ;;
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esac
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}
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function start_vms() {
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yesno=n
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echo -e "\e[36mDo you want to start up the Virtual Machines now? (y/n) \e[0m"
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read -e -p "" -i $yesno yesno
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case $yesno in
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[Yy]*)
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# Start VMs
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for ((i = 1; i <= $vm_number; i++)); do
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if [[ $i -le 9 ]]; then
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idx="0$i"
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else
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idx=$i
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fi
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echo -e "\e[33mStarting Virtual Machine $idx\e[0m"
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qm start $(($id + $i - 1))
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done
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# Print VMs statuses
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for ((i = 1; i <= $vm_number; i++)); do
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if [[ $i -le 9 ]]; then
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idx="0$i"
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else
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idx=$i
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fi
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echo -e "\e[33mVirtual Machine $idx status: \e[0m"
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qm status $(($id + $i - 1))
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done
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;;
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[Nn]*)
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exit
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;;
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*) ;;
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esac
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}
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function get_os_image() {
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case $os in
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"Debian")
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os_url=$debian_url
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os_filename=$debian_filename
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# Check if the directory exists.
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if [ ! -d "$template_path/qcow" ]; then
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mkdir $template_path/qcow
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fi
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cd $template_path/qcow
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;;
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"Ubuntu")
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os_url=$ubuntu_url
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os_filename=$ubuntu_filename
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# Check if the directory exists.
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if [ ! -d "$template_path/iso" ]; then
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mkdir $template_path/iso
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fi
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cd $template_path/iso
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;;
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*)
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echo -e "\e[31Invalid option.\e[0m"
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;;
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esac
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# Check if the os image file already exists.
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# If not then download it.
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if [ ! -f "$os_filename" ]; then
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# Download the selected os cloud image
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echo -e "\e[33mDownloading $os cloud image ...\e[0m"
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wget $os_url
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fi
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}
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# Only runs if you uncomment the function in `create_vms`. Please be careful
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function destroy_existing_vms() {
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# Stop and destroy Virtual Machine if it already exists
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# TODO: Put loop and confirmation before doing anything
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qm stop $(($id + $i - 1))
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qm destroy $(($id + $i - 1)) --destroy-unreferenced-disks --purge
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}
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function create_vms() {
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for ((i = 1; i <= $vm_number; i++)); do
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# Stop and destroy Virtual Machine if it already exists.
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# Be really careful with this only uncomment if you know what are you doing. !!!
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#
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# destroy_existing_vms
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#
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# #############################
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# Create VM from the cloud image
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if [[ $i -le 9 ]]; then
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idx="0$i"
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else
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idx=$i
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fi
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echo -e "\e[33mCreating Virtual Machine: $idx\e[0m"
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echo "VM ID: $(($id + $i - 1)), Name: $name-$idx, IP address: $octet1.$octet2.$octet3.$(($octet4 + $i - 1))"
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qm create $(($id + $i - 1)) \
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--memory $memory \
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--core $core \
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--numa 1 \
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--name $name-$idx \
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--net0 virtio,bridge=vmbr0 \
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--balloon 0 \
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--ipconfig0 gw=$gateway,ip=$octet1.$octet2.$octet3.$(($octet4 + $i - 1))/24 \
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--cipassword $password \
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--ciuser $user \
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--ciupgrade 1 \
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--sshkeys $cert_path/$cert_name.pub \
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--agent=$agent
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qm importdisk $(($id + $i - 1)) $os_filename $drive_name
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qm set $(($id + $i - 1)) --scsihw virtio-scsi-pci --scsi0 $drive_name:vm-$(($id + $i - 1))-disk-0
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qm disk resize $(($id + $i - 1)) scsi0 $disk_size
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qm set $(($id + $i - 1)) --ide2 $drive_name:cloudinit
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qm set $(($id + $i - 1)) --boot c --bootdisk scsi0
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qm set $(($id + $i - 1)) --serial0 socket --vga serial0
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done
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}
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#########################
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# Run the script #
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#########################
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run
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9
Kubernetes/Create-VMS/readme.md
Normal file
9
Kubernetes/Create-VMS/readme.md
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@ -0,0 +1,9 @@
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# Simple script to create multiple Virtual Machines automatically
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1. It will ask you some questions about your wished Virtual Machines.
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- You can select Debian or Ubuntu image
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2. Prints a detailed info with about the VMs going tyo be created.
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3. Let you confirm if You want to continue
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4. You can chose to start all VMs at the end 🚀
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Enjoy 🙂
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