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0xd61/kvm-manager-wifi.sh

Last active September 10, 2020 19:18
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kvm/qemu helper script
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kvm-manager-wifi.sh
#!/bin/bash
# script from http://www.linux-kvm.org/page/Simple_shell_script_to_manage_your_virtual_machine_with_bridged_networking
######################
## Default settings ##
######################
## Directory and files
if ! [ -d $2 ]
then
DIR_BASE=`pwd $`
else
DIR_BASE=$2
fi
FILE_HDA=${DIR_BASE}/hda
FILE_CONF=${DIR_BASE}/conf
### run directory will be auto-created with following files
DIR_RUN=${DIR_BASE}/run
FILE_MONITOR=${DIR_RUN}/monitor
FILE_PID=${DIR_RUN}/pid
FILE_OUT=${DIR_RUN}/out
GUEST_ID=0
GUEST_MEMORY=1024
GUEST_IP=192.168.1.97
HOST_IP=192.168.1.90/24
HOST_INTERFACE=wlan0
### generated variables
TAP_NAME=tap${GUEST_ID}
#MAC_ADDR=00:16:3e:${GUEST_ID}:00:01
#VNC_DISPLAY=3${GUEST_ID}00
#VNC_PORT=`expr ${VNC_DISPLAY} + 5900`
### options for kvm
#OPT_BOOT="-boot c"
OPT_BOOT=""
#OPT_CDROM="-cdrom /media/cdrom"
OPT_CDROM=""
#OPT_STD_VGA="-std-vga"
OPT_STD_VGA=""
#OPT_USBDEVICE="-usbdevice tablet"
OPT_USBDEVICE=""
#OPT_NO_ACPI="-no-acpi"
OPT_NO_ACPI=""
#OPT_CPU="-cpu qemu64"
OPT_CPU=""
#OPT_NIC="-net nic,macaddr=${MAC_ADDR},model=rtl8139"
OPT_NIC="-net nic"
#OPT_DRIVE="-drive <drive>"
OPT_DRIVE=""
#OPT_HDB="-hdb <hdb>"
OPT_HDB=""
#OPT_VNC="-vnc :${VNC_DISPLAY}"
OPT_VNC=""
#OPT_HDA="-hda <hda>"
OPT_HDA="-hda ${FILE_HDA}"
#OPT_SMP="-smp 4"
OPT_SMP=""
OPT_SERIAL=""
OPT_OTHER=""
if [ -f ${FILE_CONF} ]
then
. ${FILE_CONF}
fi
### wireless network
start_net() {
echo "start network adapter ${TAP_NAME}"
sysctl net.ipv4.ip_forward=1
tunctl -b -t ${TAP_NAME} -u `whoami`
ip link set ${TAP_NAME} up
ip addr add ${HOST_IP} dev ${TAP_NAME}
parprouted ${HOST_INTERFACE} ${TAP_NAME}
echo "network adapter ${TAP_NAME} is started with as ip ${GUEST_IP}"
}
stop_net() {
echo "stop network adapter ${TAP_NAME}"
tunctl -d ${TAP_NAME}
}
check_net_status() {
NET_STATUS=`ifconfig | grep ${TAP_NAME}`
if test "${NET_STATUS}" = ""
then
echo "network adapter ${TAP_NAME} has not been started"
else
echo "network adapter ${TAP_NAME} has been started"
fi
}
## virtual machine
start_vm_sliently() {
echo "start virtual machine"
if ! [ -d ${DIR_RUN} ]
then
mkdir ${DIR_RUN}
fi
kvm \
${OPT_HDA} \
${OPT_HDB} \
${OPT_DRIVE} \
${OPT_CPU} \
${OPT_SMP} \
${OPT_CDROM} \
-m ${GUEST_MEMORY} \
${OPT_BOOT} \
${OPT_USBDEVICE} \
${OPT_NIC} \
${OPT_SERIAL} \
-net tap,ifname=${TAP_NAME},script=no \
-k fr \
${OPT_STD_VGA} \
-monitor unix:${FILE_MONITOR},server,nowait \
-pidfile ${FILE_PID} \
${OPT_NO_ACPI} \
${OPT_VNC} \
${OPT_OTHER} &
# check if the pid file created successfully
if [ ! -f ${FILE_PID} ]
then
sleep 1
fi
if [ ! -f ${FILE_PID} ]
then
return 1
fi
# check if the process started successfully
if [ ! -d /proc/`cat ${FILE_PID}` ]
then
return 1
fi
}
start_vm() {
start_vm_sliently
# if start_vm_sliently return -1
if test $? -eq -1
then
echo "startup failed. check ${FILE_OUT}"
exit 1
else
echo "startup successfully"
fi
}
send_cmd() {
QEMU_MONITOR_COMMAND=$1
echo "${QEMU_MONITOR_COMMAND}" | socat - UNIX-CONNECT:${FILE_MONITOR}
}
get_vm_pid_to() {
ACTION_TO_DO=$1
# check if pid file there
if [ ! -f ${FILE_PID} ]
then
echo "${FILE_PID} not found, can not ${ACTION_TO_DO}"
exit 1
fi
VM_PID=`cat ${FILE_PID}`
}
check_vm_status() {
get_vm_pid_to "check vm status"
if [ -d /proc/${VM_PID} ]
then
echo "vm is running at process id ${VM_PID}"
else
echo "vm is not running"
fi
}
kill_vm() {
echo "kill virtual machine"
get_vm_pid_to "kill vm"
# if the process is still running, kill it
if [ -d /proc/${VM_PID} ]
then
kill ${VM_PID}
fi
rm ${FILE_PID}
rm ${FILE_MONITOR}
echo "vm killed"
}
detect_module() {
. /lib/lsb/init-functions
# Figure out which module we need.
if grep -q ^flags.*\\\<vmx\\\> /proc/cpuinfo
then
module=kvm_intel
elif grep -q ^flags.*\\\<svm\\\> /proc/cpuinfo
then
module=kvm_amd
else
module=
fi
}
start_kvm() {
detect_module
if [ -z "$module" ]
then
log_failure_msg "Your system does not have the CPU extensions required to use KVM. Not doing anything."
exit 0
fi
if modprobe "$module"
then
log_success_msg "Loading kvm module $module"
else
log_failure_msg "Module $module failed to load"
exit 1
fi
}
stop_kvm() {
detect_module
if [ -z "$module" ]
then
exit 0
fi
if lsmod | grep -q "$module"
then
if rmmod "$module"
then
log_success_msg "Succesfully unloaded kvm module $module"
rmmod kvm
else
log_failure_msg "Failed to remove $module"
exit 1
fi
else
log_failure_msg "Module $module not loaded"
fi
}
### Main switch
case "$1" in
start-kvm)
start_kvm
;;
start-net)
start_net
;;
start-vm)
start_vm
;;
start)
start_net
start_vm
;;
status)
check_net_status
check_vm_status
;;
cad)
send_cmd "sendkey ctrl-alt-delete"
;;
vnc)
vncviewer localhost:${VNC_PORT} &
;;
rdesktop)
rdesktop $2 $3 ${GUEST_IP} &
;;
ssh)
ssh ${GUEST_IP}
;;
ping)
ping ${GUEST_IP}
;;
halt)
ssh root@${GUEST_IP} halt
;;
reset)
send_cmd "system_reset"
;;
stop-vm)
stop_vm
;;
stop-net)
stop_net
;;
stop)
stop_vm
stop_net
;;
stop-kvm)
stop_kvm
;;
kill)
kill_vm
sleep 1
stop_net
;;
*)
echo "KVM manager version 0.1, Samuel Bally"
echo "usage: kvm-manager [options] [path]"
echo ""
echo "Standard options:"
echo "You need to specify a action, available actions are:"
echo "[start-kvm] start kvm module"
echo "[start-net] start network of the virtual machine"
echo "[start-vm] start virtual machine itself"
echo "[start] start both"
echo "[status] check the status of network and virtual machine"
echo "[cad] ctrl-alt-delete"
echo "[vnc] use vinagre to view the vnc of the guest"
echo "[rdesktop] remote desktop to the guest"
echo "[ssh] ssh to the guest"
echo "[ping] ping guest"
echo "[halt] ssh to the guest and halt the guest"
echo "[reset] reset the virtual machine"
echo "[stop-vm] power off vritual machine"
echo "[stop-net] stop network of the virtual machine"
echo "[stop-kvm] stop kvm module"
echo "[stop] stop both"
echo "[kill] kill the viritual machine and network"
echo ""
echo "Config file:"
echo "create a conf file in your vm directory for change default settings"
echo "conf varialbles:"
echo "DIR_RUN"
echo "FILE_MONITOR"
echo "FILE_PID"
echo "FILE_OUT"
echo "GUEST_ID"
echo "GUEST_MEMORY"
echo "GUEST_IP"
echo "HOST_IP"
echo "HOST_INTERFACE"
echo "OPT_BOOT"
echo "OPT_CDROM"
echo "OPT_STD_VGA"
echo "OPT_USBDEVICE"
echo "OPT_NO_ACPI"
echo "OPT_CPU"
echo "OPT_NIC"
echo "OPT_DRIVE"
echo "OPT_HDB"
echo "OPT_VNC"
echo "OPT_HDA"
echo "OPT_SMP"
echo "OPT_SERIAL"
echo "OPT_OTHER"
exit 1
;;
esac
exit
Raw
kvm-manager.sh
#!/bin/sh
# script from http://www.linux-kvm.org/page/Simple_shell_script_to_manage_your_virtual_machine_with_bridged_networking
### expected directory structure
DIR_BASE=`pwd $`
FILE_HDA=${DIR_BASE}/hda
FILE_CONF=${DIR_BASE}/conf
FILE_OVERRIDE=${DIR_BASE}/override
### run directory will be auto-created with following files
DIR_RUN=${DIR_BASE}/run
FILE_MONITOR=${DIR_RUN}/monitor
FILE_PID=${DIR_RUN}/pid
FILE_OUT=${DIR_RUN}/out
### user-defined variables in ./kvm.conf
#GUEST_ID [required] generate the mac and tap name
#GUEST_MEMORY [optional] in mega-bytes, default to 1024
GUEST_MEMORY=1024
if [ -f ${FILE_CONF} ]
then
. ${FILE_CONF}
else
echo "file ${FILE_CONF} not exists"
exit 1
fi
### generated variables
TAP_NAME=tap${GUEST_ID}
MAC_ADDR=00:16:3e:${GUEST_ID}:00:01
VNC_DISPLAY=3${GUEST_ID}00
VNC_PORT=`expr ${VNC_DISPLAY} + 5900`
GUEST_IP=10.18.18.1${GUEST_ID}
### options for kvm
OPT_BOOT="-boot c"
OPT_CDROM=""
OPT_STD_VGA="-std-vga"
OPT_USBDEVICE="-usbdevice tablet"
OPT_NO_ACPI=""
OPT_CPU="-cpu qemu64"
OPT_NIC="-net nic,macaddr=${MAC_ADDR},model=rtl8139"
OPT_DRIVE=""
OPT_HDB=""
OPT_VNC="-vnc :${VNC_DISPLAY}"
OPT_HDA="-hda ${FILE_HDA}"
OPT_SMP="-smp 4"
OPT_SERIAL=""
if [ -f ${FILE_OVERRIDE} ]
then
. ${FILE_OVERRIDE}
fi
### network
start_net() {
echo "start network adapter ${TAP_NAME}"
sudo tunctl -u twer -t ${TAP_NAME}
sudo ifconfig ${TAP_NAME} 0.0.0.0 promisc up
sudo brctl addif br0 ${TAP_NAME}
}
stop_net() {
echo "stop network adapter ${TAP_NAME}"
sudo tunctl -d ${TAP_NAME}
}
check_net_status() {
NET_STATUS=`ifconfig | grep ${TAP_NAME}`
if test "${NET_STATUS}" = ""
then
echo "network adapter ${TAP_NAME} has not been started"
else
echo "network adapter ${TAP_NAME} has been started"
fi
}
## virtual machine
start_vm_sliently() {
echo "start virtual machine"
sudo modprobe kvm
sudo modprobe kvm_intel
if ! [ -d /dev/km ]
then
sleep 1
fi
sudo chmod 666 /dev/kvm
sudo chmod 666 /dev/net/tun
if ! [ -d ${DIR_RUN} ]
then
mkdir ${DIR_RUN}
fi
qemu-system-x86_64 \
${OPT_HDA} \
${OPT_HDB} \
${OPT_DRIVE} \
${OPT_CPU} \
${OPT_SMP} \
${OPT_CDROM} \
-m ${GUEST_MEMORY} \
${OPT_BOOT} \
${OPT_USBDEVICE} \
${OPT_NIC} \
${OPT_SERIAL} \
-net tap,ifname=${TAP_NAME} \
-k en-us \
${OPT_STD_VGA} \
-monitor unix:${FILE_MONITOR},server,nowait \
-pidfile ${FILE_PID} \
${OPT_NO_ACPI} \
${OPT_VNC} &
# check if the pid file created successfully
if [ ! -f ${FILE_PID} ]
then
sleep 1
fi
if [ ! -f ${FILE_PID} ]
then
return 1
fi
# check if the process started successfully
if [ ! -d /proc/`cat ${FILE_PID}` ]
then
return 1
fi
}
start_vm() {
start_vm_sliently
# if start_vm_sliently return -1
if test $? -eq -1
then
echo "startup failed. check ${FILE_OUT}"
exit 1
else
echo "startup successfully"
fi
}
send_cmd() {
QEMU_MONITOR_COMMAND=$1
echo "${QEMU_MONITOR_COMMAND}" | socat - UNIX-CONNECT:${FILE_MONITOR}
}
get_vm_pid_to() {
ACTION_TO_DO=$1
# check if pid file there
if [ ! -f ${FILE_PID} ]
then
echo "${FILE_PID} not found, can not ${ACTION_TO_DO}"
exit 1
fi
VM_PID=`cat ${FILE_PID}`
}
check_vm_status() {
get_vm_pid_to "check vm status"
if [ -d /proc/${VM_PID} ]
then
echo "vm is running at process id ${VM_PID}"
else
echo "vm is not running"
fi
}
stop_vm() {
echo "stop virtual machine"
get_vm_pid_to "stop vm"
# check if monitor file there
if [ ! -e ${FILE_MONITOR} ]
then
echo "${FILE_MONITOR} not found, can not stop vm"
exit 1
fi
# if the process is still running
# send command quit to its monitor, and wait
if [ -d /proc/${VM_PID} ]
then
send_cmd "quit"
fi
# check if the process is still running
if [ -d /proc/${VM_PID} ]
then
sleep 1
fi
if [ ! -d /proc/${VM_PID} ]
then
# yes, done
rm ${FILE_PID}
rm ${FILE_MONITOR}
echo "vm stopped successfully"
else
# no, something wrong there...
echo "failed to stop vm"
exit 1
fi
}
kill_vm() {
echo "kill virtual machine"
get_vm_pid_to "kill vm"
# if the process is still running, kill it
if [ -d /proc/${VM_PID} ]
then
kill ${VM_PID}
fi
rm ${FILE_PID}
rm ${FILE_MONITOR}
echo "vm killed"
}
### Main switch
case "$1" in
start-net)
start_net
;;
start-vm)
start_vm
;;
start)
start_net
start_vm
;;
status)
check_net_status
check_vm_status
;;
cad)
send_cmd "sendkey ctrl-alt-delete"
;;
vnc)
vncviewer localhost:${VNC_PORT} &
;;
rdesktop)
rdesktop $2 $3 ${GUEST_IP} &
;;
ssh)
ssh ${GUEST_IP}
;;
ping)
ping ${GUEST_IP}
;;
halt)
ssh twer@${GUEST_IP} sudo halt
;;
reset)
send_cmd "system_reset"
;;
stop-vm)
stop_vm
;;
stop-net)
stop_net
;;
stop)
stop_vm
stop_net
;;
kill)
kill_vm
sleep 1
stop_net
;;
*)
echo "You need to specify a action, available actions are:"
echo "[start-net] start network of the virtual machine"
echo "[start-vm] start virtual machine itself"
echo "[start] start both"
echo "[status] check the status of network and virtual machine"
echo "[cad] ctrl-alt-delete"
echo "[vnc] use vinagre to view the vnc of the guest"
echo "[rdesktop] remote desktop to the guest"
echo "[ssh] ssh to the guest"
echo "[ping] ping guest"
echo "[halt] ssh to the guest and halt the guest"
echo "[reset] reset the virtual machine"
echo "[stop-vm] power off vritual machine"
echo "[stop-net] stop network of the virtual machine"
echo "[stop] stop both"
echo "[kill] kill the viritual machine and network"
exit 1
;;
esac
exit
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