KVM (недо)VDI с одноразовыми виртуальными машинами с помощью bash

#!/bin/sh

server_ip=$(/usr/bin/cat /etc/client.conf |/usr/bin/grep "server_ip" 
|/usr/bin/cut -d "=" -f2)
vdi_signal_port=$(/usr/bin/cat /etc/client.conf |/usr/bin/grep "vdi_signal_port" 
 |/usr/bin/cut -d "=" -f2)
vdi_spice_port=$(/usr/bin/cat /etc/client.conf |/usr/bin/grep "vdi_spice_port" 
|/usr/bin/cut -d "=" -f2)
animation_folder=$(/usr/bin/cat /etc/client.conf |/usr/bin/grep "animation_folder" 
|/usr/bin/cut -d "=" -f2)

process=/usr/bin/remote-viewer

while true
do
 if [ -z `/usr/bin/pidof feh` ]
 then
 /usr/bin/echo $animation_folder
 /usr/bin/feh -N -x -D1 $animation_folder &
 else
 /usr/bin/echo
 fi
/usr/bin/nc -i 1 $server_ip $vdi_signal_port |while read line
 do
  if /usr/bin/echo "$line" |/usr/bin/grep "RULE ADDED, CONNECT NOW!"
  then
   /usr/bin/killall feh
   pid_process=$($process "spice://$server_ip:$vdi_spice_port"  
   "--spice-disable-audio" "--spice-disable-effects=animation"  
   "--spice-preferred-compression=auto-glz" "-k" 
   "--kiosk-quit=on-disconnect" | /bin/echo $!)
   /usr/bin/wait $pid_process
   /usr/bin/killall -u $USER
   exit
  else
   /usr/bin/echo $line >> /var/log/remote.log
  fi
 done
done

server_ip=192.168.101.2
vdi_signal_port=5905
vdi_spice_port=5906
animation_folder=/usr/share/backgrounds/animation
background_folder=/usr/share/backgrounds2/fedora-workstation

service vdi_signal

{
port	=	5905
socket_type	=	stream
protocol	=	tcp
wait	=	no
user	=	root
server	=	/home/admin/scripts_vdi_new/vm_manager.sh
}

#!/usr/bin/sh

#<SET LOCAL VARIABLES FOR SCRIPT>#
SRV_SCRIPTS_DIR=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_scripts_dir" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_SCRIPTS_DIR=$SRV_SCRIPTS_DIR"
export SRV_SCRIPTS_DIR=$SRV_SCRIPTS_DIR
SRV_POOL_SIZE=$(/usr/bin/cat /etc/vm_manager.conf 
|/usr/bin/grep "srv_pool_size" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_POOL_SIZE=$SRV_POOL_SIZE"
export "SRV_POOL_SIZE=$SRV_POOL_SIZE"
SRV_START_PORT_POOL=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_start_port_pool" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo SRV_START_PORT_POOL=$SRV_START_PORT_POOL
export SRV_START_PORT_POOL=$SRV_START_PORT_POOL
SRV_TMP_DIR=$(/usr/bin/cat /etc/vm_manager.conf 
|/usr/bin/grep "srv_tmp_dir" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_TMP_DIR=$SRV_TMP_DIR"
export SRV_TMP_DIR=$SRV_TMP_DIR
date=$(/usr/bin/date)
#</SET LOCAL VARIABLES FOR SCRIPT>#

/usr/bin/echo "# $date START EXECUTE VM_MANAGER.SH #"

make_connect_to_vm() {

#<READING CLEAR.LIST AND CHECK PORT FOR NETWORK STATE>#
/usr/bin/echo "READING CLEAN.LIST AND CHECK PORT STATE"
#<CHECK FOR NO ONE PORT IN CLEAR.LIST>#

if [ -z `/usr/bin/cat $SRV_TMP_DIR/clear.list` ]
then
 /usr/bin/echo "NO AVALIBLE PORTS IN CLEAN.LIST FOUND"
 /usr/bin/echo "Will try to make housekeeper, and create new vm"
 make_housekeeper
else
 #<MINIMUN ONE PORT IN CLEAR.LIST FOUND>#
  /usr/bin/cat $SRV_TMP_DIR/clear.list |while read line
   do
    clear_vm_port=$(($line))
    /bin/echo "FOUND PORT $clear_vm_port IN CLEAN.LIST. TRY NETSTAT"  
    "CHECK FOR PORT=$clear_vm_port"

    #<NETSTAT LISTEN CHECK FOR PORT FROM CLEAN.LIST>#
    if /usr/bin/netstat -lnt |/usr/bin/grep ":$clear_vm_port" > /dev/null
     then
     /bin/echo "$clear_vm_port IS LISTEN"
     #<PORT IS LISTEN. CHECK FOR IS CONNECTED NOW>#
     if /usr/bin/netstat -nt |/usr/bin/grep ":$clear_vm_port"  
     |/usr/bin/grep "ESTABLISHED" > /dev/null
       then
#<PORT LISTEN AND ALREADY CONNECTED! MOVE PORT FROM CLEAR.LIST 
# TO WASTE.LIST>#
       /bin/echo "$clear_vm_port IS ALREADY CONNECTED, MOVE PORT TO WASTE.LIST"
       /usr/bin/sed -i "/$clear_vm_port/d" $SRV_TMP_DIR/clear.list
       /usr/bin/echo $clear_vm_port >> $SRV_TMP_DIR/waste.list
       else
#<PORT LISTEN AND NO ONE CONNECT NOW. MOVE PORT FROM CLEAR.LIST TO 
# CONN_WAIT.LIST AND CREATE IPTABLES RULES>##
       /usr/bin/echo "OK, $clear_vm_port IS NOT ALREADY CONNECTED"
       /usr/bin/sed -i "/$clear_vm_port/d" $SRV_TMP_DIR/clear.list
       /usr/bin/echo $clear_vm_port >> $SRV_TMP_DIR/conn_wait.list
       $SRV_SCRIPTS_DIR/vm_connect.sh $clear_vm_port
#<TRY TO CLEAN VM IN WASTE.LIST AND CREATE NEW WM>#
       /bin/echo "TRY TO CLEAN VM IN WASTE.LIST AND CREATE NEW VM"
       make_housekeeper
       /usr/bin/echo "# $date STOP EXECUTE VM_MANAGER.SH#"
       exit
       fi
     else
     #<PORT IS NOT A LISTEN. MOVE PORT FROM CLEAR.LIST TO WASTE.LIST>#
     /bin/echo " "$clear_vm_port" is NOT LISTEN. REMOVE PORT FROM CLEAR.LIST"
     /usr/bin/sed -i "/$clear_vm_port/d" $SRV_TMP_DIR/clear.list
     /usr/bin/echo $clear_vm_port >> $SRV_TMP_DIR/waste.list
    make_housekeeper
     fi
   done
fi
}

make_housekeeper() {
/usr/bin/echo "=Execute housekeeper="
/usr/bin/cat $SRV_TMP_DIR/waste.list |while read line
 do
 /usr/bin/echo "$line"
 if /usr/bin/netstat -lnt |/usr/bin/grep ":$line" > /dev/null
  then
  /bin/echo "port_alive, vm is running"
  if /usr/bin/netstat -nt |/usr/bin/grep ":$line"  
   |/usr/bin/grep "ESTABLISHED" > /dev/null
    then
    /bin/echo "port_in_use can't delete vm!!!"
    else
    /bin/echo "port_not in use. Deleting vm"
    /usr/bin/sed -i "/$line/d" $SRV_TMP_DIR/waste.list
    /usr/bin/echo $line >> $SRV_TMP_DIR/recycle.list
    $SRV_SCRIPTS_DIR/vm_delete.sh $line
    fi
  else
  /usr/bin/echo "posible vm is already off. Deleting vm"
  /usr/bin/echo "MOVE VM IN OFF STATE $line FROM WASTE.LIST TO"  
  "RECYCLE.LIST AND DELETE VM"
  /usr/bin/sed -i "/$line/d" $SRV_TMP_DIR/waste.list
  /usr/bin/echo $line >> $SRV_TMP_DIR/recycle.list
  $SRV_SCRIPTS_DIR/vm_delete.sh "$line"
 fi
done
create_clear_vm
}

create_clear_vm() {
/usr/bin/echo "=Create new VM="
while [ $SRV_POOL_SIZE -gt 0 ]
do
 new_vm_port=$(($SRV_START_PORT_POOL+$SRV_POOL_SIZE))
 /usr/bin/echo "new_vm_port=$new_vm_port"
 if /usr/bin/grep "$new_vm_port" $SRV_TMP_DIR/clear.list > /dev/null
  then
  /usr/bin/echo "$new_vm_port port is already defined in clear.list"
  else
  if /usr/bin/grep "$new_vm_port" $SRV_TMP_DIR/waste.list > /dev/null
   then
   /usr/bin/echo "$new_vm_port port is already defined in waste.list"
   else
    if /usr/bin/grep "$new_vm_port" $SRV_TMP_DIR/recycle.list > /dev/null
    then
    /usr/bin/echo "$new_vm_port PORT IS ALREADY DEFINED IN RECYCLE LIST"
    else
    if  /usr/bin/grep "$new_vm_port" $SRV_TMP_DIR/conn_wait.list > /dev/null
     then
     /usr/bin/echo "$new_vm_port PORT IS ALREADY DEFINED IN CONN_WAIT LIST"
     else
     /usr/bin/echo "PORT IN NOT DEFINED IN NO ONE LIST WILL CREATE" 
     "VM ON PORT $new_vm_port"
     /usr/bin/echo $new_vm_port >> $SRV_TMP_DIR/recycle.list
     $SRV_SCRIPTS_DIR/vm_create.sh $new_vm_port
     fi
    fi
   fi
 fi
 SRV_POOL_SIZE=$(($SRV_POOL_SIZE-1))
done
/usr/bin/echo "# $date STOP EXECUTE VM_MANAGER.SH #"
}
make_connect_to_vm |/usr/bin/tee -a /var/log/vm_manager.log

#!/bin/sh

date=$(/usr/bin/date)

/usr/bin/echo "#" "$date" "START EXECUTE VM_CONNECT.SH#"

#<SET LOCAL VARIABLES FOR SCRIPT>#
free_port="$1"

input_iface=$(/usr/bin/cat /etc/vm_manager.conf |/usr/bin/grep "input_iface" 
|/usr/bin/cut -d "=" -f2)
/usr/bin/echo "input_iface=$input_iface"

vdi_spice_port=$(/usr/bin/cat /etc/vm_manager.conf   
|/usr/bin/grep "vdi_spice_port" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "vdi_spice_port=$vdi_spice_port"

count_conn_tryes=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "count_conn_tryes" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "count_conn_tryes=$count_conn_tryes"
#</SET LOCAL VARIABLES FOR SCRIPT>#

#<CREATE IPTABLES RULES AND SEND SIGNAL TO CONNECT>#
/usr/bin/echo "create rule for port" $free_port
/usr/sbin/iptables -I INPUT -i $input_iface -p tcp -m tcp --dport  
$free_port  -j ACCEPT
/usr/sbin/iptables -I OUTPUT -o $input_iface -p tcp -m tcp --sport 
$free_port -j ACCEPT
/usr/sbin/iptables -t nat -I PREROUTING -p tcp -i $input_iface --dport  
$vdi_spice_port -j DNAT --to-destination 127.0.0.1:$free_port
/usr/bin/echo "RULE ADDED, CONNECT NOW!"
#</CREATE IPTABLES RULES AND SEND SIGNAL TO CONNECT>#

#<WAIT CONNECT ESTABLISHED AND ACTIVATE CONNECT TIMER>#
while [ $count_conn_tryes -gt 0 ]
do
if /usr/bin/netstat -nt |/usr/bin/grep ":$free_port"  
|/usr/bin/grep "ESTABLISHED" > /dev/null
 then
  /bin/echo "$free_port NOW in use!!!"
  /usr/bin/sleep 1s
  /usr/sbin/iptables -t nat -D PREROUTING -p tcp -i $input_iface --dport  
  $vdi_spice_port -j DNAT --to-destination 127.0.0.1:$free_port
  /usr/sbin/iptables -D INPUT -i $input_iface -p tcp -m tcp --dport  
  $free_port  -j ACCEPT
  /usr/sbin/iptables -D OUTPUT -o $input_iface -p tcp -m tcp --sport  
  $free_port -j ACCEPT
  /usr/bin/sed -i "/$free_port/d" $SRV_TMP_DIR/conn_wait.list
  /usr/bin/echo $free_port >> $SRV_TMP_DIR/waste.list
  return
 else
   /usr/bin/echo "$free_port NOT IN USE"
   /usr/bin/echo "RULE ADDED, CONNECT NOW!"
   /usr/bin/sleep 1s
 fi
count_conn_tryes=$((count_conn_tryes-1))
done
#</WAIT CONNECT ESTABLISED AND ACTIVATE CONNECT TIMER>#

#<IF COUNT HAS EXPIRED. REMOVE IPTABLES RULE AND REVERT 
# VM TO CLEAR.LIST>#
/usr/bin/echo "REVERT IPTABLES RULE AND REVERT VM TO CLEAN 
LIST $free_port"
/usr/sbin/iptables -t nat -D PREROUTING -p tcp -i $input_iface --dport 
$vdi_spice_port -j DNAT --to-destination 127.0.0.1:$free_port
/usr/sbin/iptables -D INPUT -i $input_iface -p tcp -m tcp --dport $free_port 
-j ACCEPT
/usr/sbin/iptables -D OUTPUT -o $input_iface -p tcp -m tcp --sport  
$free_port -j ACCEPT
/usr/bin/sed -i "/$free_port/d" $SRV_TMP_DIR/conn_wait.list
/usr/bin/echo $free_port >> $SRV_TMP_DIR/clear.list
#</COUNT HAS EXPIRED. REMOVE IPTABLES RULE AND REVERT VM 
#TO CLEAR.LIST>#
/usr/bin/echo "#" "$date" "END EXECUTE VM_CONNECT.SH#"

# Attention! Must Be!  sysctl net.ipv4.conf.all.route_localnet=1

#!/bin/sh

#<Set local VARIABLES>#
port_to_delete="$1"
date=$(/usr/bin/date)
#</Set local VARIABLES>#

/usr/bin/echo "# $date START EXECUTE VM_DELETE.SH#"
/usr/bin/echo "TRY DELETE VM ON PORT: $vm_port"

#<VM NAME SETUP>#
vm_name_part1=$(/usr/bin/cat /etc/vm_manager.conf |/usr/bin/grep 'base_host' 
|/usr/bin/cut -d'=' -f2)
vm_name=$(/usr/bin/echo "$vm_name_part1""-""$port_to_delete")
#</VM NAME SETUP>#

#<SHUTDOWN AND DELETE VM>#
/usr/bin/virsh destroy $vm_name
/usr/bin/virsh undefine $vm_name
/usr/bin/rm -f /var/lib/libvirt/images_write/$vm_name.qcow2
/usr/bin/sed -i "/$port_to_delete/d" $SRV_TMP_DIR/recycle.list
#</SHUTDOWN AND DELETE VM>#

/usr/bin/echo "VM ON PORT $vm_port HAS BEEN DELETE AND REMOVE" 
 "FROM RECYCLE.LIST. EXIT FROM VM_DELETE.SH"
/usr/bin/echo "# $date STOP EXECUTE VM_DELETE.SH#"
exit

#!/bin/sh
/usr/bin/echo "#" "$date" "START RUNNING VM_CREATE.SH#"

new_vm_port=$1
date=$(/usr/bin/date)
a=0
/usr/bin/echo SRV_TMP_DIR=$SRV_TMP_DIR

#<SET LOCAL VARIABLES FOR SCRIPT>#
base_host=$(/usr/bin/cat /etc/vm_manager.conf |/usr/bin/grep "base_host" 
|/usr/bin/cut -d "=" -f2)
/usr/bin/echo "base_host=$base_host"
#</SET LOCAL VARIABLES FOR SCRIPT>#

hdd_image_locate() {

/bin/echo "Run STEP 1 - hdd_image_locate"

hdd_base_image=$(/usr/bin/virsh dumpxml $base_host  
|/usr/bin/grep "source file" |/usr/bin/grep "qcow2" |/usr/bin/head -n 1 
|/usr/bin/cut -d "'" -f2)
if [ -z "$hdd_base_image" ]
then
 /bin/echo "base hdd image not found!"
else
 /usr/bin/echo "hdd_base_image found is a $hdd_base_image. Run next step 2"

#< CHECK FOR SNAPSHOT ON BASE HDD >#

  if [ 0 -eq `/usr/bin/qemu-img info "$hdd_base_image" | /usr/bin/grep -c "Snapshot"` ]
  then
  /usr/bin/echo "base image haven't snapshot, run NEXT STEP 3"
  else
  /usr/bin/echo "base hdd image have a snapshot, can't use this image"
  exit
  fi
#</ CHECK FOR SNAPSHOT ON BASE HDD >#

#< CHECK FOR HDD IMAGE IS LINK CLONE >#
  if [ 0 -eq `/usr/bin/qemu-img info "$hdd_base_image" |/usr/bin/grep -c "backing file"
  then
  /usr/bin/echo "base image is not a linked clone, NEXT STEP 4"
  /usr/bin/echo "Base image check complete!"
  else
  /usr/bin/echo "base hdd image is a linked clone, can't use this image"
  exit
  fi
fi
#</ CHECK FOR HDD IMAGE IS LINK CLONE >#
cloning
    }

cloning() {
# <Step_1 turn the base VM off >#
 /usr/bin/virsh shutdown $base_host > /dev/null 2>&1
 # </Step_1 turn the base VM off >#

#<Create_vm_config>#

/usr/bin/echo "Free port for Spice VM is $new_vm_port"

 #<Setup_name_for_new_VM>#
new_vm_name=$(/bin/echo $base_host"-"$new_vm_port)
#</Setup_name_for_new_VM>#

#<Make_base_config_as_clone_base_VM>#
/usr/bin/virsh dumpxml $base_host > $SRV_TMP_DIR/$new_vm_name.xml
#<Make_base_config_as_clone_base_VM>#

##<Setup_New_VM_Name_in_config>##
/usr/bin/sed -i "s%<name>$base_host</name>%<name>$new_vm_name</name>%g" $SRV_TMP_DIR/$new_vm_name.xml
#</Setup_New_VM_Name_in_config>#

#<UUID Changing>#
old_uuid=$(/usr/bin/cat $SRV_TMP_DIR/$new_vm_name.xml |/usr/bin/grep "<uuid>")
/usr/bin/echo old UUID $old_uuid
new_uuid_part1=$(/usr/bin/echo "$old_uuid" |/usr/bin/cut -d "-" -f 1,2)
new_uuid_part2=$(/usr/bin/echo "$old_uuid" |/usr/bin/cut -d "-" -f 4,5)
new_uuid=$(/bin/echo $new_uuid_part1"-"$new_vm_port"-"$new_uuid_part2)
/usr/bin/echo $new_uuid
/usr/bin/sed -i "s%$old_uuid%$new_uuid%g" $SRV_TMP_DIR/$new_vm_name.xml
#</UUID Changing>#


#<Spice port replace>#
old_spice_port=$(/usr/bin/cat  $SRV_TMP_DIR/$new_vm_name.xml  
|/usr/bin/grep "graphics type='spice' port=")
/bin/echo old spice port $old_spice_port
new_spice_port=$(/usr/bin/echo "<graphics type='spice' port='$new_vm_port' autoport='no' listen='127.0.0.1'>")
/bin/echo $new_spice_port
/usr/bin/sed -i "s%$old_spice_port%$new_spice_port%g" $SRV_TMP_DIR/$new_vm_name.xml
#</Spice port replace>#

#<MAC_ADDR_GENERATE>#
mac_new=$(/usr/bin/hexdump -n6 -e '/1 ":%02X"' /dev/random|/usr/bin/sed s/^://g)
/usr/bin/echo New Mac is $mac_new
#</MAC_ADDR_GENERATE>#

#<GET OLD MAC AND REPLACE>#
mac_old=$(/usr/bin/cat $SRV_TMP_DIR/$new_vm_name.xml |/usr/bin/grep "mac address=")
/usr/bin/echo old mac is $mac_old
/usr/bin/sed -i "s%$mac_old%$mac_new%g" $SRV_TMP_DIR/$new_vm_name.xml
#<GET OLD MAC AND REPLACE>#

#<new_disk_create>#
/usr/bin/qemu-img create -f qcow2 -b $hdd_base_image /var/lib/libvirt/images_write/$new_vm_name.qcow2
#</new_disk_create>#

#<attach_new_disk_in_confiig>#
/usr/bin/echo hdd base image is $hdd_base_image
/usr/bin/sed -i "s%<source file='$hdd_base_image'/>%<source file='/var/lib/libvirt/images_write/$new_vm_name.qcow2'/>%g" $SRV_TMP_DIR/$new_vm_name.xml
#</attach_new_disk_in_confiig>#

starting_vm
    #</Create_vm config>#
}

starting_vm() {

/usr/bin/virsh define $SRV_TMP_DIR/$new_vm_name.xml
/usr/bin/virsh start $new_vm_name
while [ $a -ne 1 ]
do
if /usr/bin/virsh list --all |/usr/bin/grep "$new_vm_name" |/usr/bin/grep "running" > /dev/null 2>&1
then
a=1
/usr/bin/sed -i "/$new_vm_port/d" $SRV_TMP_DIR/recycle.list
/usr/bin/echo $new_vm_port >> $SRV_TMP_DIR/clear.list
/usr/bin/echo "#" "$date" "VM $new_vm_name IS STARTED #"
else
 /usr/bin/echo "#VM $new_vm_name is not ready#"
a=0
/usr/bin/sleep 2s
fi
done
/usr/bin/echo "#$date  EXIT FROM VM_CREATE.SH#"
exit
}

hdd_image_locate

#!/usr/bin/sh

#set VARIABLES#
SRV_SCRIPTS_DIR=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_scripts_dir" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_SCRIPTS_DIR=$SRV_SCRIPTS_DIR"
export SRV_SCRIPTS_DIR=$SRV_SCRIPTS_DIR

SRV_TMP_DIR=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_tmp_dir" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_TMP_DIR=$SRV_TMP_DIR"
export SRV_TMP_DIR=$SRV_TMP_DIR

SRV_POOL_SIZE=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_pool_size" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo "SRV_POOL_SIZE=$SRV_POOL_SIZE"

SRV_START_PORT_POOL=$(/usr/bin/cat /etc/vm_manager.conf  
|/usr/bin/grep "srv_start_port_pool" |/usr/bin/cut -d "=" -f2)
/usr/bin/echo SRV_START_PORT_POOL=$SRV_START_PORT_POOL
#Set VARIABLES#


/usr/bin/echo "= Cleanup ALL VM="

/usr/bin/mkdir $SRV_TMP_DIR

/usr/sbin/service iptables restart
/usr/bin/cat /dev/null > $SRV_TMP_DIR/clear.list
/usr/bin/cat /dev/null > $SRV_TMP_DIR/waste.list
/usr/bin/cat /dev/null > $SRV_TMP_DIR/recycle.list
/usr/bin/cat /dev/null > $SRV_TMP_DIR/conn_wait.list

port_to_delete=$(($SRV_START_PORT_POOL+$SRV_POOL_SIZE))

        while [ "$port_to_delete" -gt "$SRV_START_PORT_POOL" ]
          do
		$SRV_SCRIPTS_DIR/vm_delete.sh $port_to_delete
		port_to_delete=$(($port_to_delete-1))
        done

/usr/bin/echo "= EXIT FROM VM_CLEAR.SH="