转“脚本小王子“舒某写的一键克隆（删除、启动、停止等）KVM虚拟机集群

. /etc/init.d/functions

Red="\e[1;31m"
Purple="\e[1;35m"
Green="\e[1;32m"
Blue="\e[1;36m"
Yellow="\e[1;33m"
End="\e[0m"

#克隆集群
clone() {
    lists=`virsh list --all |awk '/.*template.*/{print $2}'`
    echo "模板清单:"
    echo "<-------------------->"
    echo $lists
    echo "<-------------------->"
    read -p "请输入克隆模板: " template
    #read -p "请输入克隆模板ip: " ip
    read -p "请输入集群名称: "  name
    read -p "请输入节点数: "    node
    read -p "请输入ip起点(10.0.0.x): " num
    for  ((i=0;i<$node;i++)) ;do
         let n=$i+1
         let num=$num+1
         arg[$i]="$name-0$n"
         virt-clone -o ubuntu20.04-template -n ${arg[$i]}  -f /var/lib/libvirt/images/${arg[$i]}.qcow2
         virsh start ${arg[$i]} ||  continue
         sleep 60
         echo $num ${arg[$i]}
         ssh root@10.0.0.100 "sed -i -r 's@(^[[:space:]]+- 10.0.0.)[0-9]+@\1$num@' /etc/netplan/00-installer-config.yaml;hostnamectl set-hostname ${arg[$i]} ;reboot"
    done
}

#删除集群
delete(){
    lists1=`virsh  list --all | awk 'NR!=1{print $2}'|sed -nr "s/^(.*)-[0-9]+$/\1/p" |uniq`
    echo "<-------------------->"
    for n in $lists1 ;do
    echo -e "$Purple$n$End"
    done
    echo "<-------------------->"
    read -p "请输入集群名称:"  dname
    for i in `virsh list --all| awk -v dname=$dname '$0 ~ dname{print $2}'`;do
    echo -e  "$Red$i$End"
    virsh destroy $i &> /dev/null
    virsh  undefine --remove-all-storage $i &> /dev/null && action "删除成功" true  || action "删除失败" false 
    done
}

#单节点启动
nodestart(){
    echo "<-------------------->"
    for m in `virsh  list --all | egrep ".*off$"|awk '{print $2}'` ;do
        echo -e "$Purple$m$End"
    done
    echo "<-------------------->"
    read -p "请输入节点名称:"  startnode
    virsh start $startnode &> /dev/null &&  action "$startnode 节点启动成功" true || action "$startnode 节点启动失败" false
}

#单节点重启
noderestart(){
    echo "<-------------------->"
    for o in `virsh  list --all | egrep ".*running$"|awk '{print $2}'` ;do
        echo -e "$Purple$o$End"
    done
    echo "<-------------------->"
    read -p "请输入节点名称:"  restartnode
    virsh reboot $restartnode &> /dev/null &&  action "$restartnode 节点重启成功" true || action "$restartnode 节点重启失败" false
}

#单节点关机
nodestop(){
    echo "<-------------------->"
    for p in `virsh  list --all | egrep ".*running$"|awk '{print $2}'` ;do
        echo -e "$Purple$p$End"
    done
    echo "<-------------------->"
    read -p "请输入节点名称:"  stopnode
    virsh shutdown $stopnode &> /dev/null &&  action "$stopnode 节点关机成功" true || action "$stopnode 节点关机失败" false
}

#启动集群
clusterstart(){
    lists2=`virsh  list --all | awk 'NR!=1{print $2}'|sed -nr "s/^(.*)-[0-9]+$/\1/p" |uniq`
    echo "<-------------------->"
    for q in $lists2 ;do
        echo -e "$Purple$q$End"
    done
    echo "<-------------------->"
    read -p "请输入集群名称:"  dname
    for i1 in `virsh list --all| awk -v dname=$dname '$0 ~ dname{print $2}'`;do
    echo -e  "$Red$i1$End"
    virsh start $i1 &> /dev/null &&  action "$i1 节点启动成功" true || action "$i1 节点启动失败" false
    done

}

#关闭集群
clusterstop(){
    lists3=`virsh  list --all | awk 'NR!=1{print $2}'|sed -nr "s/^(.*)-[0-9]+$/\1/p" |uniq`
    echo "<-------------------->"
    for r in $lists3 ;do
        echo -e "$Purple$r$End"
    done
    echo "<-------------------->"
    read -p "请输入集群名称:"  dname
    for i2 in `virsh list --all| awk -v dname=$dname '$0 ~ dname{print $2}'`;do
    echo -e  "$Red$i2$End"
    virsh shutdown $i2 &> /dev/null &&  action "$i2 节点关闭成功" true || action "$i2 节点关闭失败" false
    done
}

#集群重启
clusterrestart(){
    lists4=`virsh  list --all | awk 'NR!=1{print $2}'|sed -nr "s/^(.*)-[0-9]+$/\1/p" |uniq`
    echo "<-------------------->"
    for s in $lists4 ;do
        echo -e "$Purple$s$End"
    done
    echo "<-------------------->"
    read -p "请输入集群名称:"  dname
    for i3 in `virsh list --all| awk -v dname=$dname '$0 ~ dname{print $2}'`;do
    echo -e  "$Red$i3$End"
    virsh reboot $i3 &> /dev/null &&  action "$i3 节点重启成功" true || action "$i3 节点重启失败" false
    done

}




PS3="请按要求输入操作选项:"
select lists in  克隆集群 删除集群 启动集群 关闭集群 集群重启  单节点启动 单节点关机  单节点重启  退出;do
case $REPLY in     #  1       2       3        4        5          6          7           8
1)
    echo -e "$Blue$lists$End"
    clone
    ;;
2)  
    echo -e "$Red$lists$End"
    delete
    ;;
3)  
    echo -e "$Green$lists$End"
    clusterstart
    ;;
4)
    echo -e "$Red$lists$End"
    clusterstop
    ;;
5)
    echo -e "$Yellow$lists$End"
    clusterrestart
    ;;
6)
    echo -e "$Green$lists$End"
    nodestart
    ;;
7)
    echo -e "$Red$lists$End"
    nodestop
    ;;
8)
    echo -e "$Yellow$lists$End"
    noderestart
    ;;

9)
    echo -e "$Blue$lists$End"
    exit
    ;;
*)
    echo -e "$Red输入错误$End"
    ;;
esac
done