scripts/configure-compute-node-RHEL7.2.sh

   1 #!/bin/bash
   2
   3 ##
   4 # Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
   5 # This file is part of openmano
   6 # All Rights Reserved.
   7 #
   8 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   9 # not use this file except in compliance with the License. You may obtain
  10 # a copy of the License at
  11 #
  12 #         http://www.apache.org/licenses/LICENSE-2.0
  13 #
  14 # Unless required by applicable law or agreed to in writing, software
  15 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  16 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  17 # License for the specific language governing permissions and limitations
  18 # under the License.
  19 #
  20 # For those usages not covered by the Apache License, Version 2.0 please
  21 # contact with: nfvlabs@tid.es
  22 ##
  23
  24 # Authors: Antonio Lopez, Pablo Montes, Alfonso Tierno
  25 # 2016 March 18
  26 # Modified to run on grub2 and efi boot
  27
  28 # Personalize RHEL7.2 on compute nodes
  29 # Prepared to work with the following network card drivers:
  30 #       tg3, igb drivers for management interfaces
  31 #       ixgbe (Intel Niantic) and i40e (Intel Fortville) drivers for data plane interfaces
  32
  33 # To download:
  34 # wget https://raw.githubusercontent.com/nfvlabs/openmano/master/scripts/configure-compute-node-RHEL7.1.sh
  35 # To execute:
  36 # chmod +x ./configure-compute-node-RHEL7.1.sh
  37 # sudo ./configure-compute-node-RHEL7.1.sh <user> <iface>
  38
  39 # Assumptions:
  40 # All virtualization options activated on BIOS (vt-d, vt-x, SR-IOV, no power savings...)
  41 # RHEL7.2 installed without /home partition and with the following packages selection:
  42 # @base, @core, @development, @network-file-system-client, @virtualization-hypervisor, @virtualization-platform, @virtualization-tools
  43
  44 # 2016 Aug 17 Antonio López
  45 # Changed virbrInf to virbrVIM, to reflect that this bridge is used to communicate with the VIM (OpenVIM)
  46 # Changed the vlan tag used by virbrVIM from 2000 to 1100
  47
  48 function usage(){
  49     echo -e "Usage: sudo $0 [-y] <user-name>  [ <iface-name>  [<ip-address>|dhcp] ]"
  50     echo -e "  Configure compute host for VIM usage. (version 0.4). Params:"
  51     echo -e "     -y  do not prompt for confirmation. If a new user is created, the user name is set as password"
  52     echo -e "     <user-name> Create if not exist and configure this user for openvim to connect"
  53     echo -e "     <iface-name> if suplied creates bridge interfaces on this interface, needed for openvim"
  54     echo -e "     ip or dhcp if suplied, configure the interface with this ip address (/24) or 'dhcp' "
  55 }
  56
  57
  58 #1 CHECK input parameters
  59 #1.1 root privileges
  60 [ "$USER" != "root" ] && echo "Needed root privileges" && usage && exit -1
  61
  62 #1.2 input parameters
  63 FORCE=""
  64 while getopts "y" o; do
  65     case "${o}" in
  66         y)
  67             FORCE="yes"
  68             ;;
  69         *)
  70             usage
  71             exit -1
  72             ;;
  73     esac
  74 done
  75 shift $((OPTIND-1))
  76
  77
  78 if [ $# -lt 1 ]
  79 then
  80   usage
  81   exit
  82 fi
  83
  84 user_name=$1
  85 interface=$2
  86 ip_iface=$3
  87
  88 if [ -n "$interface" ] && ! ifconfig $interface &> /dev/null
  89 then
  90   echo "Error: interface '$interface' is not present in the system"
  91   usage
  92   exit 1
  93 fi
  94
  95 echo '
  96 #################################################################
  97 #####       INSTALL NEEDED PACKETS                          #####
  98 #################################################################'
  99
 100 # Required packages
 101 yum repolist
 102 yum check-update
 103 yum update -y
 104 yum install -y screen virt-manager ethtool gcc gcc-c++ xorg-x11-xauth xorg-x11-xinit xorg-x11-deprecated-libs libXtst guestfish hwloc libhugetlbfs-utils libguestfs-tools numactl
 105 # Selinux management
 106 yum install -y policycoreutils-python
 107
 108 echo '
 109 #################################################################
 110 #####       INSTALL USER                                    #####
 111 #################################################################'
 112
 113 # Add required groups
 114 groupadd -f nfvgroup
 115 groupadd -f libvirt   #for other operating systems may be libvirtd
 116
 117 # Adds user, default password same as name
 118 if grep -q "^${user_name}:" /etc/passwd
 119 then
 120   #user exist, add to group
 121   echo "adding user ${user_name} to groups libvirt,nfvgroup"
 122   usermod -a -G libvirt,nfvgroup -g nfvgroup $user_name
 123 else
 124   #create user if it does not exist
 125   [ -z "$FORCE" ] && read -p "user '${user_name}' does not exist, create (Y/n)" kk
 126   if ! [ -z "$kk" -o "$kk"="y" -o "$kk"="Y" ]
 127   then
 128     exit
 129   fi
 130   echo "creating and configuring user ${user_name}"
 131   useradd -m -G libvirt,nfvgroup -g nfvgroup $user_name
 132   #Password
 133   if [ -z "$FORCE" ]
 134   then
 135      echo "Provide a password for $user_name"
 136      passwd $user_name
 137   else
 138      echo -e "$user_name\n$user_name" | passwd --stdin $user_name
 139   fi
 140 fi
 141
 142 #Setting default libvirt URI for the user
 143 echo "Setting default libvirt URI for the user"
 144 echo "if test -x `which virsh`; then" >> /home/${user_name}/.bash_profile
 145 echo "  export LIBVIRT_DEFAULT_URI=qemu:///system" >> /home/${user_name}/.bash_profile
 146 echo "fi" >> /home/${user_name}/.bash_profile
 147
 148 echo '
 149 #################################################################
 150 #####       INSTALL HUGEPAGES ISOLCPUS GRUB                 #####
 151 #################################################################'
 152
 153 # Huge pages 1G auto mount
 154 mkdir -p /mnt/huge
 155 if ! grep -q "Huge pages" /etc/fstab
 156 then
 157   echo "" >> /etc/fstab
 158   echo "# Huge pages" >> /etc/fstab
 159   echo "nodev /mnt/huge hugetlbfs pagesize=1GB 0 0" >> /etc/fstab
 160   echo "" >> /etc/fstab
 161 fi
 162
 163 # Huge pages reservation service
 164 if ! [ -f /usr/lib/systemd/system/hugetlb-gigantic-pages.service ]
 165 then
 166   echo "configuring huge pages service"
 167   cat > /usr/lib/systemd/system/hugetlb-gigantic-pages.service << EOL
 168 [Unit]
 169 Description=HugeTLB Gigantic Pages Reservation
 170 DefaultDependencies=no
 171 Before=dev-hugepages.mount
 172 ConditionPathExists=/sys/devices/system/node
 173 ConditionKernelCommandLine=hugepagesz=1G
 174
 175 [Service]
 176 Type=oneshot
 177 RemainAfterExit=yes
 178 ExecStart=/usr/lib/systemd/hugetlb-reserve-pages
 179
 180 [Install]
 181 WantedBy=sysinit.target
 182 EOL
 183 fi
 184 # Grub virtualization options:
 185
 186 # Get isolcpus
 187 isolcpus=`gawk 'BEGIN{pre=-2;}
 188   ($1=="processor"){pro=$3;}
 189   ($1=="core" && $4!=0){
 190      if (pre+1==pro){endrange="-" pro}
 191      else{cpus=cpus endrange sep pro; sep=","; endrange="";};
 192      pre=pro;}
 193   END{printf("%s",cpus endrange);}' /proc/cpuinfo`
 194
 195
 196 # Huge pages reservation file: reserving all memory apart from 4GB per NUMA node
 197 # Get the number of hugepages: all memory but 8GB reserved for the OS
 198 #totalmem=`dmidecode --type 17|grep Size |grep MB |gawk '{suma+=$2} END {print suma/1024}'`
 199 #hugepages=$(($totalmem-8))
 200
 201 if ! [ -f /usr/lib/systemd/hugetlb-reserve-pages ]
 202 then
 203   cat > /usr/lib/systemd/hugetlb-reserve-pages << EOL
 204 #!/bin/bash
 205 nodes_path=/sys/devices/system/node/
 206 if [ ! -d \$nodes_path ]; then
 207         echo "ERROR: \$nodes_path does not exist"
 208         exit 1
 209 fi
 210
 211 reserve_pages()
 212 {
 213         echo \$1 > \$nodes_path/\$2/hugepages/hugepages-1048576kB/nr_hugepages
 214 }
 215
 216 # This example reserves all available memory apart from 4 GB for linux
 217 # using 1GB size. You can modify it to your needs or comment the lines
 218 # to avoid reserve memory in a numa node
 219 EOL
 220   for f in /sys/devices/system/node/node?/meminfo
 221   do
 222     node=`head -n1 $f | gawk '($5=="kB"){print $2}'`
 223     memory=`head -n1 $f | gawk '($5=="kB"){print $4}'`
 224     memory=$((memory+1048576-1))   #memory must be ceiled
 225     memory=$((memory/1048576))   #from `kB to GB
 226     #if memory
 227     [ $memory -gt 4 ] && echo "reserve_pages $((memory-4)) node$node" >> /usr/lib/systemd/hugetlb-reserve-pages
 228   done
 229
 230   # Run the following commands to enable huge pages early boot reservation:
 231   chmod +x /usr/lib/systemd/hugetlb-reserve-pages
 232   systemctl enable hugetlb-gigantic-pages
 233 fi
 234
 235 # Prepares the text to add at the end of the grub line, including blacklisting ixgbevf driver in the host
 236
 237 textokernel="intel_iommu=on default_hugepagesz=1G hugepagesz=1G isolcpus=$isolcpus modprobe.blacklist=ixgbevf modprobe.blacklist=i40evf"
 238
 239 # Add text to the kernel line
 240 if ! grep -q "intel_iommu=on default_hugepagesz=1G hugepagesz=1G" /etc/default/grub
 241 then
 242   echo "adding cmdline ${textokernel}"
 243   sed -i "/^GRUB_CMDLINE_LINUX=/s/\"\$/ ${textokernel}\"/" /etc/default/grub
 244
 245   # grub2 upgrade
 246
 247   # BIOS based systems
 248   grub2-mkconfig -o /boot/grub2/grub.cfg
 249
 250   # UEFI based systems
 251   grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg
 252
 253 fi
 254
 255 echo '
 256 #################################################################
 257 #####       OTHER CONFIGURATION                             #####
 258 #################################################################'
 259
 260 # Disable requiretty
 261 if ! grep -q "#openmano" /etc/sudoers
 262 then
 263     cat >> /home/${user_name}/script_visudo.sh << EOL
 264 #!/bin/bash
 265 cat \$1 | awk '(\$0~"requiretty"){print "#"\$0}(\$0!~"requiretty"){print \$0}' > tmp
 266 cat tmp > \$1
 267 rm tmp
 268 EOL
 269     chmod +x /home/${user_name}/script_visudo.sh
 270     echo "Disabling requitetty"
 271     export EDITOR=/home/${user_name}/script_visudo.sh && sudo -E visudo
 272     rm -f /home/${user_name}/script_visudo.sh
 273 fi
 274
 275 #Configure polkint to run virsh as a normal user
 276 echo "Configuring polkint to run virsh as a normal user"
 277 cat >> /etc/polkit-1/localauthority/50-local.d/50-org.libvirt-access.pkla  << EOL
 278 [libvirt Admin Access]
 279 Identity=unix-group:libvirt
 280 Action=org.libvirt.unix.manage
 281 ResultAny=yes
 282 ResultInactive=yes
 283 ResultActive=yes
 284 EOL
 285
 286 # Links the OpenMANO required folder /opt/VNF/images to /var/lib/libvirt/images. The OS installation
 287 # should have only a / partition with all possible space available
 288
 289 echo " link /opt/VNF/images to /var/lib/libvirt/images"
 290 if [ "$user_name" != "" ]
 291 then
 292   #mkdir -p /home/${user_name}/VNF_images
 293   #chown -R ${user_name}:nfvgroup /home/${user_name}/VNF_images
 294   #chmod go+x $HOME
 295
 296   # The orchestator needs to link the images folder
 297   rm -f /opt/VNF/images
 298   mkdir -p /opt/VNF/
 299   ln -s /var/lib/libvirt/images /opt/VNF/images
 300   chown -R ${user_name}:nfvgroup /opt/VNF
 301   chown -R root:nfvgroup /var/lib/libvirt/images
 302   chmod g+rwx /var/lib/libvirt/images
 303
 304   # Selinux management
 305   #echo "configure  Selinux management"
 306   #semanage fcontext -a -t virt_image_t "/home/${user_name}/VNF_images(/.*)?"
 307   #cat /etc/selinux/targeted/contexts/files/file_contexts.local |grep virt_image
 308   #restorecon -R -v /home/${user_name}/VNF_images
 309 else
 310   mkdir -p /opt/VNF/images
 311   chmod o+rx /opt/VNF/images
 312 fi
 313
 314 echo "creating local information /opt/VNF/images/hostinfo.yaml"
 315 echo "#By default openvim assumes control plane interface naming as em1,em2,em3,em4 " > /opt/VNF/images/hostinfo.yaml
 316 echo "#and bridge ifaces as virbrMan1, virbrMan2, ..." >> /opt/VNF/images/hostinfo.yaml
 317 echo "#if compute node contain a different name it must be indicated in this file" >> /opt/VNF/images/hostinfo.yaml
 318 echo "#with the format extandard-name: compute-name" >> /opt/VNF/images/hostinfo.yaml
 319 if [ "$interface" != "" -a "$interface" != "em1" ]
 320 then
 321   echo "iface_names:"  >> /opt/VNF/images/hostinfo.yaml
 322   echo "  em1: ${interface}" >> /opt/VNF/images/hostinfo.yaml
 323 fi
 324 chmod o+r /opt/VNF/images/hostinfo.yaml
 325
 326 # deactivate memory overcommit
 327 echo "deactivate memory overcommit"
 328 service ksmtuned stop
 329 service ksm stop
 330 chkconfig ksmtuned off
 331 chkconfig ksm off
 332
 333
 334 # Libvirt options (uncomment the following)
 335 echo "configure Libvirt options"
 336 sed -i 's/#unix_sock_group = "libvirt"/unix_sock_group = "libvirt"/' /etc/libvirt/libvirtd.conf
 337 sed -i 's/#unix_sock_rw_perms = "0770"/unix_sock_rw_perms = "0770"/' /etc/libvirt/libvirtd.conf
 338 sed -i 's/#unix_sock_dir = "\/var\/run\/libvirt"/unix_sock_dir = "\/var\/run\/libvirt"/' /etc/libvirt/libvirtd.conf
 339 sed -i 's/#auth_unix_rw = "none"/auth_unix_rw = "none"/' /etc/libvirt/libvirtd.conf
 340
 341 #creating the polkit grant access for libvirt user.
 342 #This does not work !!!! so commented. No way to get running without uncomented the auth_unix_rw = "none" line
 343 #
 344 #cat > /etc/polkit-1/localauthority/50-local.d/50-org.example-libvirt-remote-access.pkla << EOL
 345 #[libvirt Management Access]
 346 # Identity=unix-user:n2;unix-user:kk
 347 # Action=org.libvirt.unix.manage
 348 # ResultAny=yes
 349 # ResultInactive=yes
 350 # ResultActive=yes
 351 #EOL
 352
 353 # Configuration change of qemu for the numatune bug issue
 354 # RHEL7.1: for this version should not be necesary - to revise
 355 #if ! grep -q "cgroup_controllers = [ \"cpu\", \"devices\", \"memory\", \"blkio\", \"cpuacct\" ]" /etc/libvirt/qemu.conf
 356 #then
 357 #cat /etc/libvirt/qemu.conf | awk '{print $0}($0~"#cgroup_controllers"){print "cgroup_controllers = [ \"cpu\", \"devices\", \"memory\", \"blkio\", \"cpuacct\" ]"}' > tmp
 358 #mv tmp /etc/libvirt/qemu.conf
 359 #fi
 360
 361 echo '
 362 #################################################################
 363 #####       NETWORK CONFIGURATION                           #####
 364 #################################################################'
 365 # Network config (if the second parameter is net)
 366 if [ -n "$interface" ]
 367 then
 368
 369   # Deactivate network manager
 370   systemctl stop NetworkManager
 371   systemctl disable NetworkManager
 372
 373   # For management and data interfaces
 374   #rm -f /etc/udev/rules.d/pci_config.rules # it will be created to define VFs
 375
 376   pushd /etc/sysconfig/network-scripts/
 377
 378   # Set ONBOOT=on and MTU=9000 on the interface used for the bridges
 379   echo "configuring iface $interface"
 380   cat ifcfg-$interface | grep -e HWADDR -e UUID > $interface.tmp
 381   echo "TYPE=Ethernet
 382 NAME=$interface
 383 DEVICE=$interface
 384 TYPE=Ethernet
 385 ONBOOT=yes
 386 NM_CONTROLLED=no
 387 MTU=9000
 388 BOOTPROTO=none
 389 IPV6INIT=no" >> $interface.tmp
 390     mv $interface.tmp  ifcfg-$interface
 391
 392   # Management interfaces
 393 #  integrated_interfaces=""
 394 #  nb_ifaces=0
 395 #  for iface in `ifconfig -a | grep ":\ " | cut -f 1 -d":"| grep -v "_" | grep -v "\." | grep -v "lo" | sort`
 396 #  do
 397 #    driver=`ethtool -i $iface| awk '($0~"driver"){print $2}'`
 398 #    if [ $driver != "ixgbe" ] && [ $driver != "bridge" ]
 399 #    then
 400 #      integrated_interfaces="$integrated_interfaces $iface"
 401 #      nb_ifaces=$((nb_ifaces+1))
 402 #      eval iface${nb_ifaces}=$iface
 403 #    fi
 404 #  done
 405
 406   #Create infrastructure bridge, normally used for connecting to compute nodes, openflow controller, ...
 407   echo "DEVICE=virbrVIM
 408 NAME=virbrVIM
 409 TYPE=Bridge
 410 ONBOOT=yes
 411 DELAY=0
 412 NM_CONTROLLED=no
 413 MTU=9000
 414 USERCTL=no" > ifcfg-virbrVIM
 415 [[ $ip_iface != "dhcp" ]] && [[ $ip_iface != "" ]] && echo -e "BOOTPROTO=static\nIPADDR=${ip_iface}\nNETMASK=255.255.255.0" >> ifcfg-virbrVIM
 416
 417     #Create VLAN for infrastructure bridge
 418     echo "DEVICE=${interface}.1100
 419 NAME=${interface}.1100
 420 ONBOOT=yes
 421 NM_CONTROLLED=no
 422 USERCTL=no
 423 VLAN=yes
 424 MTU=9000
 425 BOOTPROTO=none
 426 BRIDGE=virbrVIM" > ifcfg-${interface}.1100
 427
 428
 429   #Create bridge interfaces
 430   echo "Creating bridge ifaces: "
 431   for ((i=1;i<=20;i++))
 432   do
 433     i2digits=$i
 434     [ $i -lt 10 ] && i2digits="0$i"
 435     echo "    virbrMan$i  vlan 20$i2digits"
 436     echo "DEVICE=virbrMan$i
 437 NAME=virbrMan$i
 438 TYPE=Bridge
 439 ONBOOT=yes
 440 DELAY=0
 441 NM_CONTROLLED=no
 442 MTU=9000
 443 USERCTL=no" > ifcfg-virbrMan$i
 444
 445 #Without IP:
 446 #BOOTPROTO=static
 447 #IPADDR=10.10.10.$((i+209))
 448 #NETMASK=255.255.255.0" > ifcfg-virbrMan$i
 449
 450     # create the required interfaces to connect the bridges
 451     echo "DEVICE=${interface}.20$i2digits
 452 NAME=${interface}.20$i2digits
 453 ONBOOT=yes
 454 NM_CONTROLLED=no
 455 USERCTL=no
 456 VLAN=yes
 457 BOOTPROTO=none
 458 MTU=9000
 459 BRIDGE=virbrMan$i" > ifcfg-${interface}.20$i2digits
 460   done
 461
 462   iface=$interface
 463   if [ -n "$ip_iface" ]
 464   then
 465     echo "configuring iface $iface interface with ip $ip_iface"
 466     # Network interfaces
 467     # 1Gbps interfaces are configured with ONBOOT=yes and static IP address
 468     cat ifcfg-$iface | grep -e HWADDR -e UUID > $iface.tmp
 469     echo "TYPE=Ethernet
 470 NAME=$iface
 471 DEVICE=$iface
 472 TYPE=Ethernet
 473 ONBOOT=yes
 474 NM_CONTROLLED=no
 475 MTU=9000
 476 IPV6INIT=no" >> $iface.tmp
 477     [ $ip_iface = "dhcp" ] && echo -e "BOOTPROTO=dhcp\nDHCP_HOSTNAME=$HOSTNAME" >> $iface.tmp
 478     [ $ip_iface != "dhcp" ] && echo -e "BOOTPROTO=static\nIPADDR=${ip_iface}\nNETMASK=255.255.255.0" >> $iface.tmp
 479     mv $iface.tmp  ifcfg-$iface
 480   fi
 481   # Script to create vfs
 482   echo "#!/bin/bash" > /root/activate-vfs.sh
 483   chmod +x /root/activate-vfs.sh
 484   for iface in `ifconfig -a | grep ": " | cut -f 1 -d":" | grep -v -e "_" -e "\." -e "lo" -e "virbr" -e "tap"`
 485   do
 486     # 10/40 Gbps interfaces
 487     # Intel X520 cards: driver ixgbe
 488     # Intel XL710 Fortville cards: driver i40e
 489     driver=`ethtool -i $iface| awk '($0~"driver"){print $2}'`
 490     if [ "$driver" = "i40e" -o "$driver" = "ixgbe" ]
 491     then
 492       echo "configuring dataplane iface $iface"
 493
 494       # Create 8 SR-IOV per PF by udev rules only for Fortville cards (i40e driver)
 495       if [ "$driver" = "i40e" ]
 496       then
 497       pci=`ethtool -i $iface | awk '($0~"bus-info"){print $2}'`
 498        echo "echo 8 > /sys/bus/pci/devices/$pci/sriov_numvfs" >> /root/activate-vfs.sh
 499       fi
 500
 501       # Configure PF to boot automatically and to have a big MTU
 502       # 10Gbps interfaces are configured with ONBOOT=yes and  MTU=2000
 503       cat ifcfg-$iface | grep -e HWADDR -e UUID > $iface.tmp
 504       echo "TYPE=Ethernet
 505 NAME=$iface
 506 DEVICE=$iface
 507 ONBOOT=yes
 508 MTU=9000
 509 NM_CONTROLLED=no
 510 IPV6INIT=no
 511 BOOTPROTO=none" >> $iface.tmp
 512       mv $iface.tmp ifcfg-$iface
 513     fi
 514   done
 515   popd
 516 fi
 517 # add entry in rc.local for activate-vfs
 518 grep -q 'touch /var/lock/subsys/local' '/etc/rc.d/rc.local'
 519 if [[ $? == 0 ]]
 520 then
 521   echo "/root/activate-vfs.sh" >> /etc/rc.local
 522 fi
 523
 524
 525
 526 # Activate 8 Virtual Functions per PF on Niantic cards (ixgbe driver)
 527 if [[ `lsmod | cut -d" " -f1 | grep "ixgbe" | grep -v vf` ]]
 528 then
 529         if ! grep -q "ixgbe" /etc/modprobe.d/ixgbe.conf
 530         then
 531         echo "options ixgbe max_vfs=8" >> /etc/modprobe.d/ixgbe.conf
 532         fi
 533
 534 fi
 535
 536 # Executes dracut to load drivers on boot
 537 echo "Regenerating initramfs"
 538 dracut --force
 539
 540 # To define 8 VFs per PF we do it on rc.local, because the driver needs to be unloaded and loaded again
 541 #if ! grep -q "NFV" /etc/rc.local
 542 #then
 543 #  echo "" >> /etc/rc.local
 544 #  echo "# NFV" >> /etc/rc.local
 545 #  echo "modprobe -r ixgbe" >> /etc/rc.local
 546 #  echo "modprobe ixgbe max_vfs=8" >> /etc/rc.local
 547 #  echo "" >> /etc/rc.local
 548
 549 #  chmod +x /etc/rc.d/rc.local
 550
 551 #fi
 552
 553 echo
 554 echo "Do not forget to create a shared (NFS, Samba, ...) where original virtual machine images are allocated"
 555 echo
 556 echo "Do not forget to copy the public ssh key of openvim user into /home/${user_name}/.ssh/authorized_keys for authomatic login from openvim controller"
 557 echo
 558
 559 echo "Reboot the system to make the changes effective"
 560