Quick Fedora Cloud VM w/QEMU

run.sh

#!/usr/bin/env bash
# Quickily setup a Fedora Minimal Cloud VM with qemu
# Supports aarch64 and x86_64
# No KVM by default, add -accel=kvm to qemu call

export VER=35
export ARCH=x86_64
export DISK_SIZE=20G
export VM_HOST=fedora-cloud
export VM_USER=fedora
export VM_PASSWORD=fedora
export FILE=fedora-$VER-disk.qcow2

export RAM=2048
export CPUS=4

if [[ ! -f "$FILE" ]]; then
    echo "$FILE does not exist. Performing setup."
    echo "Downloading Fedora Cloud image"
    wget -q --show-progress https://download.fedoraproject.org/pub/fedora/linux/releases/$VER/Cloud/$ARCH/images/Fedora-Cloud-Base-$VER-1.2.$ARCH.qcow2

    echo "Making disk image extension"
    qemu-img create -F qcow2 -f qcow2 -b Fedora-Cloud-Base-$VER-1.2.$ARCH.qcow2 $FILE $DISK_SIZE

    echo "Preparing seed image"
    cat > meta-data << EOF
instance-id: Cloud00
local-hostname: $VM_HOST
EOF

    cat > user-data << EOF
#cloud-config
system_info:
    default_user:
        name: $VM_USER

chpasswd:
    list: |
        $VM_USER:$VM_PASSWORD
    expire: False

resize_rootfs: True
ssh_pwauth: True

EOF

    genisoimage -output seed.iso -volid cidata -joliet -rock user-data meta-data
    mkisofs -J -l -R -V "cidata" -iso-level 4 -o seed.iso user-data meta-data
    
    echo "Seed image is prepared"
    if [ $ARCH = 'aarch64' ]; then
        echo 'Setting up UEFI for aarch64'
        cp /usr/share/edk2/aarch64/QEMU_EFI.fd . 
    fi
fi

if [ $ARCH = 'x86_64' ]; then
    qemu-system-$ARCH \
    -m $RAM \
    -smp $CPUS \
    --accel tcg,thread=multi \
    -hda $FILE \
    -cdrom seed.iso \
    -netdev bridge,br=virbr0,id=net0 \
    -device virtio-net-pci,netdev=net0 \
    -nographic 
fi

if [ $ARCH = 'aarch64' ]; then
    qemu-system-$ARCH \
    -machine virt \
    -cpu cortex-a57 \
    -m $RAM \
    -bios QEMU_EFI.fd \
    -boot efi \
    -display none \
    -smp $CPUS \
    --accel tcg,thread=multi \
    -hda $FILE \
    -cdrom seed.iso \
    -netdev bridge,br=virbr0,id=net0 \
    -device virtio-net-pci,netdev=net0 \
    -nographic
fi