XiZi's Blog
QEMU Service on Centos
1.先放个配置文件上来
# /etc/qemu.conf # VMs that should be started on boot # use the ! prefix to disable starting/stopping a VM # QEMU_MACHINES=(kms) QEMU_MACHINES=(kms) # NOTE: following options will be prepended to qemu_${vm} # -name ${vm} -pidfile /var/run/qemu/${vm}.pid -daemonize -nographic qemu_kms_type="system-x86_64" qemu_kms="-enable-kvm -hda /opt/qemu/kmsm4WOen.rom \ -smbios type=1,manufacturer=Intel,version=1.01234,uuid=564d81c6-cd3a-d8e4-db29-756df139acb9 \ -uuid 564d81c6-cd3a-d8e4-db29-756df139acb9 \ -net nic -net user,hostfwd=tcp::1688-:1688 \ -m 256 -rtc base=localtime,clock=host -M pc \ -monitor telnet:localhost:7100,server,nowait,nodelay" qemu_kms_haltcmd="echo 'system_powerdown' | nc localhost 7100" # or netcat/ncat
2.服务所需文件。
#!/bin/sh # /etc/init.d/qemu . /etc/rc.d/init.d/functions [ -f /etc/qemu.conf ] && source /etc/qemu.conf piddir=/var/run/qemu lock='/var/lock/subsys/qemu-1.5rc1' QEMU_PATH=/opt/qemu/qemu-1.5rc1 QEMU_DEFAULT_FLAGS='-name ${vm} -pidfile ${piddir}/${vm}.pid -daemonize -vga none -display none' # -nographic QEMU_HALTCMD_WAIT=30 case "$1" in start) [ -d "${piddir}" ] || mkdir -p "${piddir}" if [ -f $lock ]; then # we were not shut down correctly for pidf in `/bin/ls $piddir/*.pid 2>/dev/null`; do if [ -s $pidf ]; then kill `cat $pidf` >/dev/null 2>&1 fi rm -f $pidf done rm -f $lock sleep 2 fi rm -f $piddir/*.pid errors=0 sucesses=0 for vm in "${QEMU_MACHINES[@]}"; do if [ "${vm}" = "${vm#!}" ]; then echo -n $"Starting QEMU VM: ${vm}" eval vm_cmdline="\$qemu_${vm}" eval vm_type="\$qemu_${vm}_type" if [ -n "${vm_type}" ]; then vm_cmd="${QEMU_PATH}/bin/qemu-${vm_type}" else vm_cmd="${QEMU_PATH}/bin/qemu" fi eval "qemu_flags=\"${QEMU_DEFAULT_FLAGS}\"" ${vm_cmd} ${qemu_flags} ${vm_cmdline} >/dev/null if [ $? = 0 ]; then successes=1 else errors=1 fi fi done if [ $errors = 1 ]; then failure; echo else success; echo fi if [ $successes = 1 ]; then touch $lock fi ;; stop) for vm in "${QEMU_MACHINES[@]}"; do if [ "${vm}" = "${vm#!}" ]; then # check pidfile presence and permissions if [ ! -r "${piddir}/${vm}.pid" ]; then continue fi echo -n $"Stopping QEMU VM: ${vm}" eval vm_haltcmd="\$qemu_${vm}_haltcmd" eval vm_haltcmd_wait="\$qemu_${vm}_haltcmd_wait" vm_haltcmd_wait=${vm_haltcmd_wait:-${QEMU_HALTCMD_WAIT}} vm_pid=$(cat ${piddir}/${vm}.pid) # check process existence if ! kill -0 ${vm_pid} 2>/dev/null; then stat_done rm -f "${piddir}/${vm}.pid" continue fi # Try to shutdown VM safely _vm_running='yes' if [ -n "${vm_haltcmd}" ]; then eval ${vm_haltcmd} >/dev/null _w=0 while [ "${_w}" -lt "${vm_haltcmd_wait}" ]; do sleep 1 if ! kill -0 ${vm_pid} 2>/dev/null; then # no such process _vm_running='' break fi _w=$((_w + 1)) done else # No haltcmd - kill VM unsafely _vm_running='yes' fi if [ -n "${_vm_running}" ]; then # kill VM unsafely kill ${vm_pid} 2>/dev/null sleep 1 fi # report status if kill -0 ${vm_pid} 2>/dev/null; then # VM is still alive #kill -9 ${vm_pid} failure; echo else success; echo fi # remove pidfile rm -f "${piddir}/${vm}.pid" fi done rm -f $lock ;; restart) $0 stop sleep 1 $0 start ;; *) echo "usage: $0 {start|stop|restart}" esac
PS:
# 如果你没安装过nc的话,就yum一下要么nc用不了,无法关闭服务器。 # yum install -y nc