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138 lines
4.5 KiB
138 lines
4.5 KiB
#!/usr/bin/bash
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<<!
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editor : NewRain
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date : 2022-08-14
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for kvm virtual machine
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!
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# 脚本控制区域
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MAIN_PATH=$(cd $(dirname $0); cd ..; pwd)
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CONTROL_PATH=$MAIN_PATH/control
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MOUNT_PATH=$MAIN_PATH/mount
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VDISKS_PATH=$MAIN_PATH/vdisks
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TEMPLATE_IMAGE_NAME="template.qcow2"
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TEMPLATE_CONFIG_NAME="template.xml"
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TEMPLATE_NETWORK_NAME="template.conf"
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TEMPLATE_REGISTER_NAME="register_instance.py"
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TEMPLATE_PATH=$MAIN_PATH/template
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CONFIG_PATH=/etc/libvirt/qemu
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KVM_CPUS=1
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KVM_MEMORY=512
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ERROR_INFO='
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"Usage: $0 [OPTION]..."\n
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\t -h, --help \t查看帮助"\n
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\t -a, --address \t虚拟机的IP地址"\n
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\t -p, --port \t虚拟机的VNC端口"\n
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\t -n, --name \t虚拟机的名称"\n
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\t -c, --cpus \t选填,虚拟机的CPU数量,默认为1"\n
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\t -m, --memory \t选填,虚拟机的内存大小,单位M,默认为512M"\n
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'
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options=$(getopt -l "help,address:,port:,name:,cpus::,memory::" -o "a:p:n:c:m:" -a -- "$@")
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if [ $# -lt 1 ];then
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echo -e $ERROR_INFO
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exit 0
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fi
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eval set -- "$options"
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while true
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do
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case "$1" in
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-h|--help)
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echo -e $ERROR_INFO
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exit
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;;
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-a|--address)
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shift
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ping -c 2 -w 1 $1 &>/dev/null
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if [ $? -eq 0 ]; then
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echo "IP地址已被使用，请更换"
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exit 1
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fi
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KVM_ADDRESS=$1
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shift
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;;
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-p|--port)
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shift
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ss -tnlp | grep :$1 &>/dev/null
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if [ $? -eq 0 ]; then
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echo "端口已被使用，请更换"
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exit 1
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fi
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KVM_PORT=$1
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shift
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;;
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-n|--name)
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shift
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virsh list --all | awk '{print $2}' | grep -E "^$1$" &>/dev/null
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if [ $? -eq 0 ]; then
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echo "名称已被使用，请更换"
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exit 1
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fi
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VM_HOSTNAME=$1
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shift
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;;
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-c|--cpus)
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shift
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cpus=`lscpu | awk '/^CPU\(s\):/{print $2}'`
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vmcpus=${1:-"$KVM_CPUS"}
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if [ $vmcpus -ge $cpus ]; then
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echo "CPU数量不能大于系统的CPU数量,宿主机cpu数量为：$cpus"
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exit 1
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fi
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KVM_CPUS=$vmcpus
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shift
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;;
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-m|--memory)
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shift
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vmmemory=${1:-"$KVM_MEMORY"}
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memory=`free -m | awk '/^Mem:/{print $2}'`
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if [ $vmmemory -ge $memory ]; then
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echo "内存不能大于系统的内存,宿主机内存为：$memory"
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exit 1
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fi
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KVM_MEMORY=`echo $vmmemory | grep -o -P '\d+'`
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shift
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;;
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--)
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shift
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break
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;;
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*)
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echo "参数错误!"
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exit 1
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;;
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esac
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done
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if [ ! -d ${MOUNT_PATH} ];then
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mkdir -p ${MOUNT_PATH}
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fi
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status=$(virsh list | awk '$2 ~ /^template$/{print "yes"}')
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if [ "$status" = "yes" ];then
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echo "正在关闭模板服务器"
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fi
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qemu-img create -f qcow2 -b ${TEMPLATE_PATH}/${TEMPLATE_IMAGE_NAME} ${VDISKS_PATH}/${VM_HOSTNAME}.qcow2
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rm -rf ${MOUNT_PATH}/*
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guestmount -a ${VDISKS_PATH}/${VM_HOSTNAME}.qcow2 -m /dev/centos/root ${MOUNT_PATH}
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/usr/bin/cp -f ${TEMPLATE_PATH}/${TEMPLATE_NETWORK_NAME} ${MOUNT_PATH}/etc/sysconfig/network-scripts/ifcfg-eth0
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sed -ri "s/^IPADDR.*/IPADDR=${KVM_ADDRESS}/" ${MOUNT_PATH}/etc/sysconfig/network-scripts/ifcfg-eth0
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sed -ri "s/^GATEWAY.*/GATEWAY=${KVM_ADDRESS%.*}.2/" ${MOUNT_PATH}/etc/sysconfig/network-scripts/ifcfg-eth0
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sed -ri "s/.*/${VM_HOSTNAME}/" ${MOUNT_PATH}/etc/hostname
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cp ${TEMPLATE_PATH}/${TEMPLATE_REGISTER_NAME} ${MOUNT_PATH}/opt && \
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echo "python3 /opt/${TEMPLATE_REGISTER_NAME}" ${VM_HOSTNAME} >> ${MOUNT_PATH}/etc/rc.d/rc.local && \
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chmod a+x ${MOUNT_PATH}/etc/rc.d/rc.local
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guestunmount ${MOUNT_PATH}
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cp ${TEMPLATE_PATH}/${TEMPLATE_CONFIG_NAME} ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s/VM_NAME/${VM_HOSTNAME}/" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s/VM_VNC_PORT/${KVM_PORT}/" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s#IMAGE_PATH#${VDISKS_PATH}/${VM_HOSTNAME}.qcow2#" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s/VM_UUID/`uuidgen`/" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s/VM_MEMORY/$[${KVM_MEMORY} * 1024 ]/" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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sed -ri "s/VM_CPUS/${KVM_CPUS}/" ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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virsh define ${CONFIG_PATH}/${VM_HOSTNAME}.xml
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virsh start ${VM_HOSTNAME}
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