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161 lines
4.6 KiB
161 lines
4.6 KiB
#!/bin/bash
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set -Eeuo pipefail
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# Script to create a Fedora Server VM with cloud-init
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# Specs: 16GB RAM, 4 vCPU, 1TB sparse root disk
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# Configuration
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VM_NAME="${VM_NAME:-quadlets}"
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VM_RAM="${VM_RAM:-16384}" # Unit: MB
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VM_VCPUS="${VM_VCPUS:-4}"
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DISK_SIZE="${DISK_SIZE:-1024}" # Unit: GB
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LIBVIRT_IMAGES_DIR="/var/lib/libvirt/images"
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VM_DIR="${LIBVIRT_IMAGES_DIR}/${VM_NAME}"
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CLOUD_INIT_CONFIG="$(dirname "$(realpath "$0")")/cloud-init.dev.yaml"
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# Colors for output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m' # No Color
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log_info() {
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echo -e "${GREEN}[INFO]${NC} $*"
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}
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log_warn() {
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echo -e "${YELLOW}[WARN]${NC} $*"
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}
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log_error() {
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echo -e "${RED}[ERROR]${NC} $*"
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}
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# Check if running as root or with sudo
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if [[ $EUID -ne 0 ]]; then
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log_error "This script must be run as root or with sudo"
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exit 1
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fi
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# Check required commands
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for cmd in virt-install genisoimage curl jq; do
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if ! command -v "$cmd" &> /dev/null; then
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log_error "Required command '$cmd' not found. Please install it first."
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exit 1
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fi
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done
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# Check if cloud-init config exists
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if [[ ! -f "$CLOUD_INIT_CONFIG" ]]; then
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log_error "Cloud-init config not found: $CLOUD_INIT_CONFIG"
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exit 1
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fi
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# Get the latest Fedora Server version
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log_info "Determining latest Fedora Server version..."
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FEDORA_VERSION=$(curl -sSfL https://fedoraproject.org/releases.json | \
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jq -r '.[] | select(.variant=="Cloud") | .version' | \
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sort -rV | \
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head -n 1)
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if [[ -z "$FEDORA_VERSION" ]]; then
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log_error "Could not determine latest Fedora version!"
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exit 1
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fi
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log_info "Using Fedora Server version: $FEDORA_VERSION"
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# Get download URL from releases.json
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log_info "Fetching download information..."
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QCOW2_FULL_URL=$(curl -sSfL https://fedoraproject.org/releases.json | \
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jq -r --arg ver "$FEDORA_VERSION" --arg arch "$(arch)" \
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'.[] | select(.version==$ver and .variant=="Cloud" and .subvariant=="Cloud_Base" and .arch==$arch and (.link|endswith(".qcow2"))) | .link')
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if [[ -z "$QCOW2_FULL_URL" ]]; then
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log_error "Could not find Qcow2 download URL for Fedora $FEDORA_VERSION"
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exit 1
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fi
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QCOW2_FILENAME=$(basename "$QCOW2_FULL_URL")
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mkdir -p "$VM_DIR"
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# Download Qcow2 image if not already present
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QCOW2_PATH="${VM_DIR}/${QCOW2_FILENAME}"
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if [[ -f "$QCOW2_PATH" ]]; then
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log_info "Qcow2 image already exists: $QCOW2_PATH"
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else
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log_info "Downloading Qcow2 image..."
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curl -fL -o "$QCOW2_PATH" "$QCOW2_FULL_URL"
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log_info "Download complete"
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fi
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# Create the VM disk from the base image
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VM_DISK="${VM_DIR}/${VM_NAME}.qcow2"
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if [[ -f "$VM_DISK" ]]; then
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log_warn "VM disk already exists: $VM_DISK"
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else
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log_info "Creating VM disk (${DISK_SIZE}GB sparse)..."
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qemu-img create -f qcow2 -F qcow2 -b "$QCOW2_PATH" "$VM_DISK" "${DISK_SIZE}G"
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fi
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# Create cloud-init ISO
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CLOUD_INIT_ISO="${VM_DIR}/cloud-init.iso"
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USER_DATA="${VM_DIR}/user-data"
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META_DATA="${VM_DIR}/meta-data"
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log_info "Creating cloud-init configuration files..."
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# Copy user-data from cloud-init config
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cp "$CLOUD_INIT_CONFIG" "$USER_DATA"
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# Create meta-data file
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cat > "$META_DATA" << EOF
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instance-id: ${VM_NAME}
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local-hostname: ${VM_NAME}
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EOF
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log_info "Creating cloud-init ISO..."
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genisoimage -output "$CLOUD_INIT_ISO" -volid cidata -joliet -rock "$USER_DATA" "$META_DATA"
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# Check if VM already exists
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if virsh dominfo "$VM_NAME" &> /dev/null; then
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log_warn "VM '$VM_NAME' already exists"
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else
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# Create the VM
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log_info "Creating VM: $VM_NAME"
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log_info " RAM: ${VM_RAM}MB (16GB)"
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log_info " vCPUs: $VM_VCPUS"
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log_info " Disk: ${DISK_SIZE}GB (sparse)"
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virt-install \
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--name "$VM_NAME" \
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--ram "$VM_RAM" \
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--vcpus "$VM_VCPUS" \
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--cpu host-passthrough \
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--disk path="$VM_DISK",format=qcow2,bus=virtio \
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--disk path="$CLOUD_INIT_ISO",device=cdrom \
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--os-variant fedora-unknown \
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--network network=default,model=virtio \
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--graphics none \
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--console pty,target.type=virtio \
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--serial pty \
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--sysinfo system.serial=ds=nocloud \
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--boot uefi \
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--import \
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--noautoconsole
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log_info "VM '$VM_NAME' created successfully!"
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log_info ""
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log_info "VM Details:"
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log_info " Name: $VM_NAME"
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log_info " Directory: $VM_DIR"
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log_info " Disk: $VM_DISK"
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log_info " Cloud-init: $CLOUD_INIT_ISO"
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log_info ""
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log_info "To start the VM: virsh start $VM_NAME"
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log_info "To connect to console: virsh console $VM_NAME"
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log_info "To get IP address: virsh domifaddr $VM_NAME"
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log_info "To destroy the VM: virsh destroy $VM_NAME"
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log_info "To delete the VM: virsh undefine --nvram $VM_NAME && rm -rf $VM_DIR"
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fi
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