control-vm.sh: Refactor logic and provide a help output
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312
control-vm.sh
312
control-vm.sh
@ -8,7 +8,7 @@
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# https://git.holgersson.xyz/nfr/control-vm
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# https://git.holgersson.xyz/nfr/control-vm
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# If that link does not work, feel free to drop me an email.
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# If that link does not work, feel free to drop me an email.
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# Version: 2024-05-23
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# For version see variable below comment section.
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# Author: Nils Freydank <nils.freydank@datenschutz-ist-voll-doof.de>
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# Author: Nils Freydank <nils.freydank@datenschutz-ist-voll-doof.de>
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# License: MIT
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# License: MIT
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@ -65,133 +65,133 @@
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# CLIPBOARD="True"
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# CLIPBOARD="True"
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# _EOF
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# _EOF
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# Provide a sanity check first.
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__VERSION__="0.0.0"
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[[ -z "${1}" ]] && echo "Please provide a guest name!" && exit 1
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# === Define default values ===
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set_params(){
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CLIPBOARD="${CLIPBOARD:-}"
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# === Define default values ===
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CPU_CORES="${CPU_CORES:-8}"
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CLIPBOARD="${CLIPBOARD:-}"
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EFI="${EFI:-True}"
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CPU_CORES="${CPU_CORES:-8}"
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GUEST_NAME="${1}"
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EFI="${EFI:-True}"
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LIVE_ONLY="${LIVE_ONLY:-}"
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GUEST_NAME="${1}"
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# Keep low default aligned with oldest tested version.
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LIVE_ONLY="${LIVE_ONLY:-}"
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# Feel free to bump to latest version that you QEMU supports.
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# Keep low default aligned with oldest tested version.
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MACHINE="${MACHINE:-pc-q35-6.0}"
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# Feel free to bump to latest version that you QEMU supports.
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MEMORY="${MEMORY:-16384}"
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MACHINE="${MACHINE:-pc-q35-6.0}"
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NET="${NET:-}"
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MEMORY="${MEMORY:-16384}"
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NETDEV_NAME="vmnic-${GUEST_NAME}"
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NET="${NET:-}"
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SOUND="${SOUND:-}"
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NETDEV_NAME="vmnic-${GUEST_NAME}"
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SSH_PORT="${SSH_PORT:-}"
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SOUND="${SOUND:-}"
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UI="${UI:-}"
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SSH_PORT="${SSH_PORT:-}"
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# Define paths.
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UI="${UI:-}"
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# Note: Sort in alphabetical order as long as inheritance is respected.
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# Define paths.
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BASE_PATH="$(pwd)/${GUEST_NAME}"
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# Note: Sort in alphabetical order as long as inheritance is respected.
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GUEST_CONFIG_FILE="${GUEST_CONFIG_FILE:-${BASE_PATH}/virtual-machine.bash}"
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BASE_PATH="$(pwd)/${GUEST_NAME}"
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IMAGE_PATH="${IMAGE_PATH:-${BASE_PATH}/virtual-machine.img}"
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GUEST_CONFIG_FILE="${GUEST_CONFIG_FILE:-${BASE_PATH}/virtual-machine.bash}"
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ISO_PATH="${ISO_PATH:-${BASE_PATH}/../installer/${GUEST_NAME}.iso}"
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IMAGE_PATH="${IMAGE_PATH:-${BASE_PATH}/virtual-machine.img}"
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MONITOR_SOCKET="${MONITOR_SOCKET:-${BASE_PATH}/monitor.socket}"
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ISO_PATH="${ISO_PATH:-${BASE_PATH}/../installer/${GUEST_NAME}.iso}"
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PID_FILE="${PID_FILE:-${BASE_PATH}/qemu.pid}"
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MONITOR_SOCKET="${MONITOR_SOCKET:-${BASE_PATH}/monitor.socket}"
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QMP_SOCKET="${QMP_SOCKET:-${BASE_PATH}/qmp.socket}"
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PID_FILE="${PID_FILE:-${BASE_PATH}/qemu.pid}"
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SNAPSHOT_INFO_FILE="${SNAPSHOT_INFO_FILE:-${BASE_PATH}/last-snapshot-info}"
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QMP_SOCKET="${QMP_SOCKET:-${BASE_PATH}/qmp.socket}"
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SPICE_SOCKET="${SPICE_SOCKET:-${BASE_PATH}/spice.socket}"
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SNAPSHOT_INFO_FILE="${SNAPSHOT_INFO_FILE:-${BASE_PATH}/last-snapshot-info}"
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SPICE_SOCKET="${SPICE_SOCKET:-${BASE_PATH}/spice.socket}"
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# === Source the guest configuration to overwrite defaults if necessary. ===
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# === Source the guest configuration to overwrite defaults if necessary. ===
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if [[ -f "${GUEST_CONFIG_FILE}" ]]; then
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if [[ -f "${GUEST_CONFIG_FILE}" ]]; then
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source "${GUEST_CONFIG_FILE}"
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source "${GUEST_CONFIG_FILE}"
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else
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else
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echo "No configuration found. Aborting."
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echo " error: No configuration found. Aborting."
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exit 2
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exit 3
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fi
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fi
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# === Define a base and glue everything together. ===
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# === Define a base and glue everything together. ===
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QEMU_COMMON_ARGS=(
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QEMU_COMMON_ARGS=(
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# Provide a pretty name for the guest.
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# Provide a pretty name for the guest.
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-name "${GUEST_NAME}"
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-name "${GUEST_NAME}"
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# Disable some less document user configuration loading.
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# Disable some less document user configuration loading.
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-no-user-config
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-no-user-config
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# Configure some seccomp mode 2 filters.
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# Configure some seccomp mode 2 filters.
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-sandbox on,obsolete=deny,elevateprivileges=allow,spawn=allow,resourcecontrol=allow
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-sandbox on,obsolete=deny,elevateprivileges=allow,spawn=allow,resourcecontrol=allow
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# Enable KVM and hardware acceleration.
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# Enable KVM and hardware acceleration.
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-enable-kvm
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-enable-kvm
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# Use the same CPU as the host has for maximum performoance and configure
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# Use the same CPU as the host has for maximum performoance and configure
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# the amount of memory and CPU cores as configured per-host.
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# the amount of memory and CPU cores as configured per-host.
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-cpu host
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-cpu host
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-smp cores="${CPU_CORES}"
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-smp cores="${CPU_CORES}"
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-m "${MEMORY}"
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-m "${MEMORY}"
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# Detach from the current shell and monitor by pid file and a unix socket.
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# Detach from the current shell and monitor by pid file and a unix socket.
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-daemonize
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-daemonize
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-pidfile "${PID_FILE}"
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-pidfile "${PID_FILE}"
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-monitor unix:"${MONITOR_SOCKET}",server,nowait
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-monitor unix:"${MONITOR_SOCKET}",server,nowait
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-qmp-pretty unix:"${QMP_SOCKET}",server,nowait
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-qmp-pretty unix:"${QMP_SOCKET}",server,nowait
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)
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)
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QEMU_DISK_ARGS=( -drive id=hd0,media=disk,if=virtio,file="${IMAGE_PATH}",aio=io_uring,cache=none,cache-size=16M,discard=on )
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QEMU_DISK_ARGS=( -drive id=hd0,media=disk,if=virtio,file="${IMAGE_PATH}",aio=io_uring,cache=none,cache-size=16M,discard=on )
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QEMU_DISPLAY_NONE_ARGS=( -vga none -display none )
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QEMU_DISPLAY_NONE_ARGS=( -vga none -display none )
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QEMU_DISPLAY_VIRTIO_ARGS=( -vga virtio )
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QEMU_DISPLAY_VIRTIO_ARGS=( -vga virtio )
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QEMU_DISPLAY_STD_ARGS=( -vga std )
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QEMU_DISPLAY_STD_ARGS=( -vga std )
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QEMU_DISPLAY_SPICE_ARGS=( -spice unix=on,addr="${SPICE_SOCKET}",disable-ticketing=on,gl=off )
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QEMU_DISPLAY_SPICE_ARGS=( -spice unix=on,addr="${SPICE_SOCKET}",disable-ticketing=on,gl=off )
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QEMU_CLIPBOARD_SPICE_ARGS=(
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QEMU_CLIPBOARD_SPICE_ARGS=(
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-device virtio-serial-pci
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-device virtio-serial-pci
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-device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0
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-device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0
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-chardev spicevmc,id=spicechannel0,name=vdagent
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-chardev spicevmc,id=spicechannel0,name=vdagent
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)
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)
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QEMU_EFI_ARGS=(
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QEMU_EFI_ARGS=(
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-M "${MACHINE}",accel=kvm
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-M "${MACHINE}",accel=kvm
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-drive file=/usr/share/edk2-ovmf/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on
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-drive file=/usr/share/edk2-ovmf/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on
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)
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)
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QEMU_BIOS_ARGS=(
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QEMU_BIOS_ARGS=(
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-M "${MACHINE}",accel=kvm
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-M "${MACHINE}",accel=kvm
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)
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)
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QEMU_ISO_ARGS=( -cdrom "${ISO_PATH}" )
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QEMU_ISO_ARGS=( -cdrom "${ISO_PATH}" )
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QEMU_NET_ARGS=(
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QEMU_NET_ARGS=(
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-device virtio-net,netdev="${NETDEV_NAME}"
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-device virtio-net,netdev="${NETDEV_NAME}"
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-netdev user,id="${NETDEV_NAME}"
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-netdev user,id="${NETDEV_NAME}"
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)
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)
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QEMU_SOUND_ARGS=( -device ich9-intel-hda -device hda-duplex )
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QEMU_SOUND_ARGS=( -device ich9-intel-hda -device hda-duplex )
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QEMU_SSH_ARGS=(
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QEMU_SSH_ARGS=(
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-device virtio-net,netdev="${NETDEV_NAME}"
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-device virtio-net,netdev="${NETDEV_NAME}"
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-netdev user,id="${NETDEV_NAME}",hostfwd=tcp:127.0.0.1:"${SSH_PORT}"-:22
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-netdev user,id="${NETDEV_NAME}",hostfwd=tcp:127.0.0.1:"${SSH_PORT}"-:22
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)
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)
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# === Start the final QEMU parameter array. ===
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QEMU_ARGS=( "${QEMU_COMMON_ARGS[@]}" )
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if [[ "${EFI}" ]]; then
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QEMU_ARGS+=( "${QEMU_EFI_ARGS[@]}" )
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else
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QEMU_ARGS+=( "${QEMU_BIOS_ARGS[@]}" )
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fi
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# The following block checks only agains live vs non-live.
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if [[ "${LIVE_ONLY}" ]]; then
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QEMU_ARGS+=(
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"${QEMU_ISO_ARGS[@]}"
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# d: CD-ROM
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-boot d
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)
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else
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QEMU_ARGS+=(
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"${QEMU_DISK_ARGS[@]}"
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# c: hard disk
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-boot c
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)
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fi
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#
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[[ -n "${NET}" && -z "${SSH_PORT}" ]] && QEMU_ARGS+=( "${QEMU_NET_ARGS[@]}" )
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[[ -n "${SOUND}" ]] && QEMU_ARGS+=( "${QEMU_SOUND_ARGS[@]}" )
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[[ -n "${SSH_PORT}" ]] && QEMU_ARGS+=( "${QEMU_SSH_ARGS[@]}" )
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if [[ -n "${UI}" ]]; then
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case "${UI}" in
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std|stdvga ) QEMU_ARGS+=( "${QEMU_DISPLAY_STD_ARGS[@]}" );;
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*) QEMU_ARGS+=( "${QEMU_DISPLAY_VIRTIO_ARGS[@]}" );;
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esac
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QEMU_ARGS+=( "${QEMU_DISPLAY_SPICE_ARGS[@]}" )
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# Only check for clipboard support here as clipoard w/o UI doesn't make
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# sense in this context.
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if [[ -n "${CLIPBOARD}" ]]; then
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QEMU_ARGS+=( "${QEMU_CLIPBOARD_SPICE_ARGS[@]}" )
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fi
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else
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QEMU_ARGS+=( "${QEMU_DISPLAY_NONE_ARGS[@]}" )
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fi
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# === Start the final QEMU parameter array. ===
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QEMU_ARGS=( "${QEMU_COMMON_ARGS[@]}" )
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if [[ "${EFI}" ]]; then
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QEMU_ARGS+=( "${QEMU_EFI_ARGS[@]}" )
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else
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QEMU_ARGS+=( "${QEMU_BIOS_ARGS[@]}" )
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fi
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# The following block checks only agains live vs non-live.
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if [[ "${LIVE_ONLY}" ]]; then
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QEMU_ARGS+=(
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"${QEMU_ISO_ARGS[@]}"
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# d: CD-ROM
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-boot d
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)
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else
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QEMU_ARGS+=(
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"${QEMU_DISK_ARGS[@]}"
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# c: hard disk
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-boot c
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)
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fi
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#
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[[ -n "${NET}" && -z "${SSH_PORT}" ]] && QEMU_ARGS+=( "${QEMU_NET_ARGS[@]}" )
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[[ -n "${SOUND}" ]] && QEMU_ARGS+=( "${QEMU_SOUND_ARGS[@]}" )
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[[ -n "${SSH_PORT}" ]] && QEMU_ARGS+=( "${QEMU_SSH_ARGS[@]}" )
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if [[ -n "${UI}" ]]; then
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case "${UI}" in
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std|stdvga ) QEMU_ARGS+=( "${QEMU_DISPLAY_STD_ARGS[@]}" );;
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*) QEMU_ARGS+=( "${QEMU_DISPLAY_VIRTIO_ARGS[@]}" );;
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esac
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QEMU_ARGS+=( "${QEMU_DISPLAY_SPICE_ARGS[@]}" )
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# Only check for clipboard support here as clipoard w/o UI doesn't make
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# sense in this context.
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if [[ -n "${CLIPBOARD}" ]]; then
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QEMU_ARGS+=( "${QEMU_CLIPBOARD_SPICE_ARGS[@]}" )
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fi
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else
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QEMU_ARGS+=( "${QEMU_DISPLAY_NONE_ARGS[@]}" )
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fi
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}
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# === Define functions for the actual QEMU controlling. ===
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# === Define functions for the actual QEMU controlling. ===
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start_qemu(){
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start_qemu(){
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if [[ ! -f "${PID_FILE}" ]]; then
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if [[ ! -f "${PID_FILE}" ]]; then
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@ -284,24 +284,52 @@ resume_qemu(){
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echo "Guest ${GUEST_NAME} is not running, nothing to resume."
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echo "Guest ${GUEST_NAME} is not running, nothing to resume."
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fi
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fi
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}
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}
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print_help(){
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echo " ======================================================================="
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echo " control-vm.sh - simple QEMU/KVM vm manager"
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echo " version: ${__VERSION__}"
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echo " author Nils Freydank <nils.freydank@datenschutz-ist-voll-doof.de>"
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echo " license: MIT"
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echo " url: https://git.holgersson.xyz/nfr/control-vm"
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echo " ======================================================================="
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echo ""
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echo " Use this tool in the following way:"
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echo " ./control-vm.sh <name of your virtual machine> <operation>"
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echo ""
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echo " with operation as one of:"
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echo " start | shutdown | stop | connect | save | restore | pause | resume"
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echo " or as one of the combinations:"
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echo " start+connect | stop+restore | restore+restart"
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echo ""
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echo " ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
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echo " ! Note that stop means a forced stop - which can lead to data loss. !"
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echo " ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
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}
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# === Parse the user input. ===
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# === Parse the user input. ===
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# "$1 != nothing" is already checked earlier.
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# Provide a sanity check first.
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case "${2}" in
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if [[ -z "${1}" ]]; then
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start+connect) start_qemu && connect_to_vm;;
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echo " error: Please provide a guest name!"
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stop+restore) stop_qemu && restore_qemu;;
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print_help
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restore+restart) stop_qemu && restore_qemu && start_qemu && connect_to_vm;;
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exit 1
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start) start_qemu;;
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else
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shutdown) shutdown_qemu;;
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set_params "${1}"
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stop) stop_qemu;;
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case "${2}" in
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connect) connect_to_vm;;
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start+connect) start_qemu && connect_to_vm;;
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save) save_qemu;;
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stop+restore) stop_qemu && restore_qemu;;
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restore) restore_qemu;;
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restore+restart) stop_qemu && restore_qemu && start_qemu && connect_to_vm;;
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pause) pause_qemu;;
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start) start_qemu;;
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resume) resume_qemu;;
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shutdown) shutdown_qemu;;
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*) echo "Unknown Operation!"
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stop) stop_qemu;;
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echo "Use one of: start | shutdown | stop | connect | save | restore | pause | resume"
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connect) connect_to_vm;;
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echo "or combinations: start+connect | stop+restore | restore+restart"
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save) save_qemu;;
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echo "Note that stop means a forced stop.";;
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restore) restore_qemu;;
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esac
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pause) pause_qemu;;
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resume) resume_qemu;;
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*) echo " error: Unknown Operation!"
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print_help
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exit 2
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;;
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esac
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fi
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# vim:fileencoding=utf-8:ts=4:syntax=bash:expandtab
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# vim:fileencoding=utf-8:ts=4:syntax=bash:expandtab
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1
todo
1
todo
@ -7,4 +7,3 @@
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# 7. shared dir without smb, but via FUSE
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# 7. shared dir without smb, but via FUSE
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# 8. bash and zsh-completion
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# 8. bash and zsh-completion
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# 9. don't rely on the PID to check if the VM is running, query socket?
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# 9. don't rely on the PID to check if the VM is running, query socket?
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# 11. print a pretty help message and share on mastodon :)
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