import this
c7780d2d34
* improve nginx playbook * improve configure-vm script * improve initialise-vm script * expand config naming options * provide args docs * syntax fix * address rabbitai comments * cleanup ansible * document ansible changes * fix review comments * update scraed data * fix max comment review
129 lines
3.7 KiB
Bash
129 lines
3.7 KiB
Bash
#!/bin/bash
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usage() {
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local code="${1:-0}"
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cat <<EOF
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Usage: $0 [OPTIONS]
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Options:
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-n, --name VM name (required)
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-p, --password Root password (required)
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-c, --cpus Number of vCPUs (required)
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-r, --ram RAM in MB (required); e.g. 2048, 4096, 8192
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-s, --size Disk size to add in GB (required); e.g. 50, 100, 200
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-h, --help Show this help message
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Example:
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$0 --name myvm --password secret --cpus 4 --ram 8192 --size 100
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EOF
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exit "$code"
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}
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# --- parse flags ---
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VM_NAME=""
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PASSWORD=""
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VCPUS=""
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RAM=""
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SIZE=""
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-n|--name)
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[[ -n "${2:-}" && "${2:0:1}" != "-" ]] || { echo "Error: --name requires a value."; exit 1; }
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VM_NAME="$2"; shift 2 ;;
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-p|--password)
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[[ -n "${2:-}" && "${2:0:1}" != "-" ]] || { echo "Error: --password requires a value."; exit 1; }
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PASSWORD="$2"; shift 2 ;;
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-c|--cpus)
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[[ -n "${2:-}" && "${2:0:1}" != "-" ]] || { echo "Error: --cpus requires a value."; exit 1; }
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VCPUS="$2"; shift 2 ;;
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-r|--ram)
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[[ -n "${2:-}" && "${2:0:1}" != "-" ]] || { echo "Error: --ram requires a value."; exit 1; }
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RAM="$2"; shift 2 ;;
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-s|--size)
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[[ -n "${2:-}" && "${2:0:1}" != "-" ]] || { echo "Error: --size requires a value."; exit 1; }
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SIZE="$2"; shift 2 ;;
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-h|--help) usage ;;
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*)
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echo "Error: Unknown option: $1"
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usage 1
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;;
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esac
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done
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# --- validate required flags ---
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MISSING=()
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[[ -z "$VM_NAME" ]] && MISSING+=("--name")
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[[ -z "$PASSWORD" ]] && MISSING+=("--password")
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[[ -z "$VCPUS" ]] && MISSING+=("--cpus")
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[[ -z "$RAM" ]] && MISSING+=("--ram")
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[[ -z "$SIZE" ]] && MISSING+=("--size")
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if [[ ${#MISSING[@]} -gt 0 ]]; then
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echo "Error: Missing required flags: ${MISSING[*]}"
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echo "Run '$0 --help' for usage."
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exit 1
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fi
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if [[ ! "$VCPUS" =~ ^[0-9]+$ || "$VCPUS" -lt 1 ]]; then
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echo "Error: --cpus must be a positive integer."
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exit 1
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fi
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if [[ ! "$RAM" =~ ^[0-9]+$ || "$RAM" -lt 256 ]]; then
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echo "Error: --ram must be a positive integer (minimum 256 MB)."
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exit 1
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fi
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if [[ ! "$SIZE" =~ ^[0-9]+$ || "$SIZE" -lt 1 ]]; then
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echo "Error: --size must be a positive integer in GB."
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exit 1
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fi
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# --- check / download base image ---
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if [[ ! -f noble-server-cloudimg-amd64.img ]]; then
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echo "Base image not found. Downloading noble-server-cloudimg-amd64.img..."
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wget https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img
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if [[ $? -ne 0 ]]; then
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echo "Error: Failed to download the base image. Exiting."
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exit 1
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fi
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fi
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IMAGE_PATH="/var/lib/libvirt/images/${VM_NAME}.img"
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if [[ -e "$IMAGE_PATH" ]]; then
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echo "Error: $IMAGE_PATH already exists. Choose a different --name or remove the old image first."
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exit 1
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fi
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echo "Copying the base image to $IMAGE_PATH..."
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cp noble-server-cloudimg-amd64.img "$IMAGE_PATH"
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echo "Checking and installing guestfs-tools if needed..."
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if ! dpkg -l | grep -q guestfs-tools; then
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sudo apt update && sudo apt install guestfs-tools -y
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fi
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echo "Setting root password inside the VM image..."
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virt-customize -a "$IMAGE_PATH" --root-password password:"$PASSWORD"
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echo "Resizing the image by +${SIZE}G..."
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qemu-img resize "$IMAGE_PATH" +${SIZE}G
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echo "Starting VM installation..."
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virt-install \
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--name "$VM_NAME" \
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--ram="$RAM" \
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--vcpus="$VCPUS" \
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--cpu host \
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--hvm \
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--disk bus=virtio,path="$IMAGE_PATH" \
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--network bridge=br0 \
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--graphics none \
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--console pty,target_type=serial \
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--osinfo ubuntunoble \
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--import
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echo "VM $VM_NAME has been successfully installed!" |