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v0.5.0 - Add proper Comments

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Janic Voser 2021-12-03 18:05:12 +01:00
parent 67117a23b0
commit d41475bb7e
1 changed files with 35 additions and 30 deletions
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63
Scripts/CreateCloudInitVM.sh
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@ -9,13 +9,14 @@
# Date of Last Maintenance: 03.12.2021
#
# Current State: Development
# Version: 0.4.0
# Version: 0.5.0
# Version History:
# v0.0.1 - Basic Script Structure
# v0.1.0 - Get the User input
# v0.2.0 - Gather Virtual Machine ID
# v0.3.0 - Get & Select the Image of the Virtualmachine
# v0.4.0 - Create the VM & Gather additional Information
# v0.5.0 - Add proper Comments
# Planned Features:
@ -28,11 +29,14 @@
# - [X] Choose Network
# - [X] IMG & ISO & qcow2 support
# Global Conigurable Variables
# Global Constants
IMAGE_STORAGE_LOCATION="/var/lib/vz/template/iso/"
DEFAULT_VM_STORAGE="tank-vms"
IMAGE_STORAGE_LOCATION="/var/lib/vz/template/iso/" # Enter here the location of your iso-Templates - This is not adjustable while running the script
DEFAULT_VM_STORAGE="tank-vms" # Enter here the default Storage Location, so you can Skip it by pressing enter
DEFAULT_DOWNLOAD_IMG_yn="n" # Set the default value for the "Download new Image"-Questing
DEFAULT_VM_NAME="cloudinit-vm" # Set the default value for the Virtual Machine Name
DEFAULT_VM_RAM="2048" # Set the default value of Memory for the Virtual Machine
DEFAULT_VM_CORES="2" # Set the default amount of cpu-cores for the Virtual Machine
DEFAULT_VM_NET="vmbr0" # Set the default network interface for the Virtual Machine
# Functions
## Gather the ID of the Virtual machine
@ -41,9 +45,8 @@ function gather_vmid {
qm list | tr -s ' ' | cut -d ' ' -f 2,3 # Get the already used VMIDs & VM-Name
echo "Enter the new ID of your Virtual Machine (It must be unused)"
read VM_ID # Get the User Input(This VMID will be used for the new created VM)
i=0
readarray -t VMID_ARRAY < <(qm list | tail -n +2 | tr -s ' ' | cut -d ' ' -f 2)
if [[ "${VMID_ARRAY[*]}" =~ "$VM_ID" ]]; then
if [[ "${VMID_ARRAY[*]}" =~ "$VM_ID" ]]; then # Check if Virtual Machine ID is alredy in use
echo "Your selected Virtual Machine ID is already in use, choose an other ID"
gather_vmid
fi
@ -52,12 +55,12 @@ function gather_vmid {
function get_img {
echo "Do you wish to download an Image? (yes/no)"
read DOWNLOAD_IMG_yn
case "$DOWNLOAD_IMG_yn" in
yes|YES|Yes|y|Y)
case "${DOWNLOAD_IMG_yn:=DEFAULT_DOWNLOAD_IMG_yn}" in # Case Statement to switch based on the User Input
yes|YES|Yes|y|Y) # The Yes case enables the possibility to download an Image
echo "Please enter the URL of your Image"
read DOWNLOAD_IMG_URL
wget "$DOWNLOAD_IMG_URL" --directory-prefix="$IMAGE_STORAGE_LOCATION"
if [ $? -eq 0 ]; then
wget "$DOWNLOAD_IMG_URL" --directory-prefix="$IMAGE_STORAGE_LOCATION" # Download the Image in to the default Image-Storage
if [ $? -eq 0 ]; then # Check if last command (Download) was successful
echo "Download was Successful"
else
echo "Download failed"
@ -65,22 +68,23 @@ function get_img {
get_img
fi
;;
no|NO|No|n|N)
no|NO|No|n|N) # The No Case skips the Image Download step
echo "Carrying on without a new Image"
;;
*)
echo "Invalid Argument: Please type \"yes\" or \"no\""
get_img # Question again if the Answer was not an possible Option
;;
esac
}
## Select an Image
function sel_img {
echo "The following list represents all Images which exist on the Hoststorage"
ls $IMAGE_STORAGE_LOCATION -l | tr -s ' ' | cut -d' ' -f 6-9
readarray -t OS_IMG_ARRAY < <(ls $IMAGE_STORAGE_LOCATION -l | tr -s ' ' | cut -d' ' -f 9)
ls $IMAGE_STORAGE_LOCATION -l | tr -s ' ' | cut -d' ' -f 6-9 # List all files in the Image Location and their Age of Creation
readarray -t OS_IMG_ARRAY < <(ls $IMAGE_STORAGE_LOCATION -l | tr -s ' ' | cut -d' ' -f 9) # Create an Array of all Images
echo "Please enter the correct Image Name(shown above)"
read OS_IMG_NAME
if ! [[ "${OS_IMG_ARRAY[*]}" =~ "$OS_IMG_NAME" ]]; then
if ! [[ "${OS_IMG_ARRAY[*]}" =~ "$OS_IMG_NAME" ]]; then # Check if Selected Image is in the Array, else go back to the selection
echo "Your selected Image does not exist"
echo "Maybe it was a Typo, Please check:"
echo " - Upper/Lowercase writing"
@ -97,11 +101,11 @@ function gather_img {
}
## Gather Virtualmachine Network
function gather_vm_net {
ip -o link show | awk -F': ' '{print $2}' | grep vmbr
ip -o link show | awk -F': ' '{print $2}' | grep vmbr # Get all the Virtual Bridge Interfaces of the Hostsystem
echo "Enter one of the above shown Network-Interfaces to add to your VM"
read VM_NET
readarray -t VM_NET_ARRAY < <(ip -o link show | awk -F': ' '{print $2}' | grep vmbr)
if ! [[ "${VM_NET_ARRAY[*]}" =~ "$VM_NET" ]]; then
readarray -t VM_NET_ARRAY < <(ip -o link show | awk -F': ' '{print $2}' | grep vmbr) # Create an array of all Virtual Bridge Interfaces of the Hostsystem
if ! [[ "${VM_NET_ARRAY[*]}" =~ "$VM_NET" ]]; then # Check if Selected Network is an existing network else go back to the Selection
echo "Your selected Network does not exist"
echo "Maybe it was a Typo, Please check:"
echo " - Upper/Lowercase writing"
@ -110,7 +114,6 @@ function gather_vm_net {
gather_vm_net
fi
}
## Gather hardware
function gather_hardware {
echo "Enter the amount of memory in MegaBytes"
@ -131,7 +134,7 @@ function gather_additional {
function gather_vm_storage {
echo "Please enter the Virtual Machine Storage Pool:[$DEFAULT_VM_STORAGE]"
read VM_STORAGE
VM_STORAGE=${VM_STORAGE:=$DEFAULT_VM_STORAGE}
VM_STORAGE=${VM_STORAGE:=$DEFAULT_VM_STORAGE} # Get the Storage of the VM, if nothing is set just use the Default
}
## Get all the Variables from the User
function get_user_input {
@ -140,17 +143,18 @@ function get_user_input {
gather_vm_storage
gather_additional
}
# Import the Cloudinit image and append it to the Virtual Machine
function vm_import_cloudinit_img {
IMG_TYPE=$(echo "$OS_IMG_NAME" | rev | cut -d "." -f 1 | rev)
if [ $IMG_TYPE == "iso" ] || [ $IMG_TYPE == "img" ];then
qm importdisk "$VM_ID" "$IMAGE_STORAGE_LOCATION$OS_IMG_NAME" "$VM_STORAGE" -format qcow2
IMG_TYPE=$(echo "$OS_IMG_NAME" | rev | cut -d "." -f 1 | rev) # Get the Image Fileending for further operations
if [ $IMG_TYPE == "iso" ] || [ $IMG_TYPE == "img" ];then # If the Image Fileending is "iso" or img" do the following
qm importdisk "$VM_ID" "$IMAGE_STORAGE_LOCATION$OS_IMG_NAME" "$VM_STORAGE" -format qcow2 # Convert the Image to qcow2 format and write it to the VM-Storage
if ! [ $? -eq 0 ];then
echo "It was not possible to convert a new Image with your values"
echo "Read the error message above"
exit
fi
elif [ $IMG_TYPE == "qcow2" ];then
qm importdisk "$VM_ID" "$IMAGE_STORAGE_LOCATION$OS_IMG_NAME" "$VM_STORAGE"
elif [ $IMG_TYPE == "qcow2" ];then # If the Image Fileending is "qcow2" do the following
qm importdisk "$VM_ID" "$IMAGE_STORAGE_LOCATION$OS_IMG_NAME" "$VM_STORAGE" #import a copy of the Image to the VM, safe the copy in the set Storagepath
if ! [ $? -eq 0 ];then
echo "It was not possible to convert a new Image with your values"
echo "Read the error message above"
@ -162,21 +166,22 @@ function vm_import_cloudinit_img {
exit
fi
}
# Create the Virtual Machine with Set-Values
function create_qm_vm {
qm create "$VM_ID" --name "$VM_NAME" --memory "$VM_RAM" --cores "$VM_CORES" --net0 virtio,bridge="$VM_NET"
qm create "$VM_ID" --name "${VM_NAME:=$DEFAULT_VM_NAME}" --memory "${VM_RAM:=$DEFAULT_VM_RAM}" --cores "${VM_CORES:=$DEFAULT_VM_CORES}" --net0 virtio,bridge="${VM_NET:=$DEFAULT_VM_NET}" # Create the Virtualmachine with the set hardware specification
if ! [ $? -eq 0 ];then
echo "It was not possible to create a Virtual machine with your values"
echo "Read the error message above"
exit
fi
vm_import_cloudinit_img
qm set $VM_ID --scsihw virtio-scsi-pci --scsi0 $VM_STORAGE:vm-$VM_ID-disk-0
vm_import_cloudinit_img # Import the Image to the Virtual Machine
qm set $VM_ID --scsihw virtio-scsi-pci --scsi0 $VM_STORAGE:vm-$VM_ID-disk-0 #Add the Image to the Virtual Machine
if ! [ $? -eq 0 ];then
echo "It was not possible to add the custom Image to your Virtual machine"
echo "Read the error message above"
exit
fi
qm set $VM_ID --ide2 $VM_STORAGE:cloudinit --boot c --bootdisk scsi0 --serial0 socket --vga serial0
qm set $VM_ID --ide2 $VM_STORAGE:cloudinit --boot c --bootdisk scsi0 --serial0 socket --vga serial0 #Add the Cloud-Initdrive & set the Bootdrive & Add a serial console(is needed for cloud-init)
if ! [ $? -eq 0 ];then
echo "It was not possible to add an cloudinit drive to your Virtual machine"
echo "Read the error message above"