scripts/configure-compute-node-UBUNTU14.04.sh - osm/openvim - Gitiles

 #!/bin/bash

 ##
 # Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
 # This file is part of openvim
 # All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"); you may
 # not use this file except in compliance with the License. You may obtain
 # a copy of the License at
 #
 #         http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
 #
 # For those usages not covered by the Apache License, Version 2.0 please
 # contact with: nfvlabs@tid.es
 ##

 # Authors: Antonio Lopez, Pablo Montes, Alfonso Tierno
 # June 2015

 # Personalize RHEL7.1 on compute nodes
 # Prepared to work with the following network card drivers:
 # 	tg3, igb drivers for management interfaces
 # 	ixgbe (Intel Niantic) and i40e (Intel Fortville) drivers for data plane interfaces

 # To download:
 # wget https://raw.githubusercontent.com/nfvlabs/openmano/master/scripts/configure-compute-node-RHEL7.1.sh
 # To execute:
 # chmod +x ./configure-compute-node-RHEL7.1.sh
 # sudo ./configure-compute-node-RHEL7.1.sh <user> <iface>

 # Assumptions:
 # All virtualization options activated on BIOS (vt-d, vt-x, SR-IOV, no power savings...)
 # RHEL7.1 installed without /home partition and with the following packages selection:
 # @base, @core, @development, @network-file-system-client, @virtualization-hypervisor, @virtualization-platform, @virtualization-tools


 function usage(){
     echo -e "Usage: sudo $0 [-y] <user-name>  [ <iface-name>  [<ip-address>|dhcp] ]"
     echo -e "  Configure compute host for VIM usage. (version 0.4). Params:"
     echo -e "     -y  do not prompt for confirmation. If a new user is created, the user name is set as password"
     echo -e "     <user-name> Create if not exist and configure this user for openvim to connect"
     echo -e "     <iface-name> if suplied creates bridge interfaces on this interface, needed for openvim"
     echo -e "     ip or dhcp if suplied, configure the interface with this ip address (/24) or 'dhcp' "
 }


 #1 CHECK input parameters
 #1.1 root privileges
 [ "$USER" != "root" ] && echo "Needed root privileges" && usage && exit -1

 #1.2 input parameters
 FORCE=""
 while getopts "y" o; do
     case "${o}" in
         y)
             FORCE="yes"
             ;;
         *)
             usage
             exit -1
             ;;
     esac
 done
 shift $((OPTIND-1))


 if [ $# -lt 1 ]
 then
   usage
   exit
 fi


 user_name=$1
 interface=$2
 ip_iface=$3

 if [ -n "$interface" ] && ! ifconfig $interface &> /dev/null
 then
   echo "Error: interface '$interface' is not present in the system"
   usage
   exit 1
 fi

 echo '
 #################################################################
 #####       INSTALL NEEDED PACKETS                          #####
 #################################################################'

 # Required packages
 apt-get -y update
 #apt-get -y install grub-common screen virt-manager ethtool build-essential x11-common x11-utils x11-apps libguestfs-tools hwloc libguestfs-tools numactl vlan nfs-common nfs-kernel-server
 apt-get -y install grub-common screen virt-manager ethtool build-essential x11-common x11-utils libguestfs-tools hwloc libguestfs-tools numactl vlan nfs-common nfs-kernel-server

 echo "Remove unneeded packages....."
 apt-get -y autoremove
 # Selinux management
 #yum install -y policycoreutils-python


 echo '
 #################################################################
 #####       INSTALL USER                                    #####
 #################################################################'

 # Add required groups
 groupadd -f admin
 groupadd -f libvirt   #for other operating systems may be libvirtd

 # Adds user, default password same as name
 if grep -q "^${user_name}:" /etc/passwd
 then
   #user exist, add to group
   echo "adding user ${user_name} to groups libvirt,admin"
   usermod -a -G libvirt,admin -g admin $user_name
 else
   #create user if it does not exist
   [ -z "$FORCE" ] && read -p "user '${user_name}' does not exist, create (Y/n)" kk
   if ! [ -z "$kk" -o "$kk"="y" -o "$kk"="Y" ]
   then
     exit
   fi
   echo "creating and configuring user ${user_name}"
   useradd -m -G libvirt,admin -g admin $user_name
   #Password
   if [ -z "$FORCE" ]
   then
      echo "Provide a password for $user_name"
      passwd $user_name
   else
      echo -e "$user_name\n$user_name" | passwd --stdin $user_name
   fi
 fi

 # Allow admin users to access without password
 if ! grep -q "#openmano" /etc/sudoers
 then
     cat >> /home/${user_name}/script_visudo.sh << EOL
 #!/bin/bash
 cat \$1 | awk '(\$0~"requiretty"){print "#"\$0}(\$0!~"requiretty"){print \$0}' > tmp
 cat tmp > \$1
 rm tmp
 echo "" >> \$1
 echo "#openmano allow to group admin to grant root privileges without password" >> \$1
 echo "%admin ALL=(ALL) NOPASSWD: ALL" >> \$1
 EOL
     chmod +x /home/${user_name}/script_visudo.sh
     echo "allowing admin user to get root privileges withut password"
     export EDITOR=/home/${user_name}/script_visudo.sh && sudo -E visudo
     rm -f /home/${user_name}/script_visudo.sh
 fi


 echo '
 #################################################################
 #####       INSTALL HUGEPAGES ISOLCPUS GRUB                 #####
 #################################################################'

 # Huge pages 1G auto mount
 mkdir -p /mnt/huge
 if ! grep -q "Huge pages" /etc/fstab
 then
   echo "" >> /etc/fstab
   echo "# Huge pages" >> /etc/fstab
   echo "nodev /mnt/huge hugetlbfs pagesize=1GB 0 0" >> /etc/fstab
   echo "" >> /etc/fstab
 fi

 # Grub virtualization options:

 # Get isolcpus
 isolcpus=`gawk 'BEGIN{pre=-2;}
   ($1=="processor"){pro=$3;}
   ($1=="core" && $4!=0){
      if (pre+1==pro){endrange="-" pro}
      else{cpus=cpus endrange sep pro; sep=","; endrange="";};
      pre=pro;}
   END{printf("%s",cpus endrange);}' /proc/cpuinfo`


 echo "CPUS: $isolcpus"

 # Huge pages reservation file: reserving all memory apart from 4GB per NUMA node
 # Get the number of hugepages: all memory but 8GB reserved for the OS
 #totalmem=`dmidecode --type 17|grep Size |grep MB |gawk '{suma+=$2} END {print suma/1024}'`
 #hugepages=$(($totalmem-8))

 if ! [ -f /usr/lib/systemd/hugetlb-reserve-pages ]
 then
   cat > /usr/lib/systemd/hugetlb-reserve-pages << EOL
 #!/bin/bash
 nodes_path=/sys/devices/system/node/
 if [ ! -d \$nodes_path ]; then
         echo "ERROR: \$nodes_path does not exist"
         exit 1
 fi

 reserve_pages()
 {
         echo \$1 > \$nodes_path/\$2/hugepages/hugepages-1048576kB/nr_hugepages
 }

 # This example reserves all available memory apart from 4 GB for linux
 # using 1GB size. You can modify it to your needs or comment the lines
 # to avoid reserve memory in a numa node
 EOL
   for f in /sys/devices/system/node/node?/meminfo
   do
     node=`head -n1 $f | gawk '($5=="kB"){print $2}'`
     memory=`head -n1 $f | gawk '($5=="kB"){print $4}'`
     memory=$((memory+1048576-1))   #memory must be ceiled
     memory=$((memory/1048576))   #from `kB to GB
     #if memory
     [ $memory -gt 4 ] && echo "reserve_pages $((memory-4)) node$node" >> /usr/lib/systemd/hugetlb-reserve-pages
   done

   # Run the following commands to enable huge pages early boot reservation:
   chmod +x /usr/lib/systemd/hugetlb-reserve-pages
   systemctl enable hugetlb-gigantic-pages
 fi

 # Prepares the text to add at the end of the grub line, including blacklisting ixgbevf driver in the host
 memtotal=`grep MemTotal /proc/meminfo | awk '{ print $2 }' `
 hpages=$(( ($memtotal/(1024*1024))-8 ))

 memtotal=$((memtotal+1048576-1))   #memory must be ceiled
 memtotal=$((memtotal/1048576))   #from `kB to GBa
 hpages=$((memtotal-8))
 [[ $hpages -lt 0 ]] $$ hpages=0


 echo "------> memtotal: $memtotal"

 textokernel="intel_iommu=on default_hugepagesz=1G hugepagesz=1G hugepages=$hpages isolcpus=$isolcpus modprobe.blacklist=ixgbevf modprobe.blacklist=i40evf"

 echo "Text to kernel: $textokernel"


 # Add text to the kernel line
 if ! grep -q "intel_iommu=on default_hugepagesz=1G hugepagesz=1G" /etc/default/grub
 then
   echo ">>>>>>>  adding cmdline ${textokernel}"
   sed -i "/^GRUB_CMDLINE_LINUX_DEFAULT=/s/\"\$/${textokernel}\"/" /etc/default/grub
   # grub2 upgrade
   #grub2-mkconfig -o /boot/grub2/grub.cfg
   update-grub
 fi

 echo '
 #################################################################
 #####       OTHER CONFIGURATION                             #####
 #################################################################'

 # Links the OpenMANO required folder /opt/VNF/images to /var/lib/libvirt/images. The OS installation
 # should have only a / partition with all possible space available

 echo " link /opt/VNF/images to /var/lib/libvirt/images"
 if [ "$user_name" != "" ]
 then
   #mkdir -p /home/${user_name}/VNF_images
   #chown -R ${user_name}:admin /home/${user_name}/VNF_images
   #chmod go+x $HOME

   # The orchestator needs to link the images folder
   rm -f /opt/VNF/images
   mkdir -p /opt/VNF/
   ln -s /var/lib/libvirt/images /opt/VNF/images
   chown -R ${user_name}:admin /opt/VNF
   chown -R root:admin /var/lib/libvirt/images
   chmod g+rwx /var/lib/libvirt/images

   # Selinux management
   #echo "configure  Selinux management"
   #semanage fcontext -a -t virt_image_t "/home/${user_name}/VNF_images(/.*)?"
   #cat /etc/selinux/targeted/contexts/files/file_contexts.local |grep virt_image
   #restorecon -R -v /home/${user_name}/VNF_images
 else
   mkdir -p /opt/VNF/images
   chmod o+rx /opt/VNF/images
 fi

 echo "creating local information /opt/VNF/images/hostinfo.yaml"
 echo "#By default openvim assumes control plane interface naming as em1,em2,em3,em4 " > /opt/VNF/images/hostinfo.yaml
 echo "#and bridge ifaces as virbrMan1, virbrMan2, ..." >> /opt/VNF/images/hostinfo.yaml
 echo "#if compute node contain a different name it must be indicated in this file" >> /opt/VNF/images/hostinfo.yaml
 echo "#with the format extandard-name: compute-name" >> /opt/VNF/images/hostinfo.yaml
 if [ "$interface" != "" -a "$interface" != "em1" ]
 then
   echo "iface_names:"  >> /opt/VNF/images/hostinfo.yaml
   echo "  em1: ${interface}" >> /opt/VNF/images/hostinfo.yaml
 fi
 chmod o+r /opt/VNF/images/hostinfo.yaml

 # deactivate memory overcommit
 #echo "deactivate memory overcommit"
 #service ksmtuned stop
 #service ksm stop
 #chkconfig ksmtuned off
 #chkconfig ksm off


 # Libvirt options (uncomment the following)
 echo "configure Libvirt options"
 sed -i 's/#unix_sock_group = "libvirt"/unix_sock_group = "libvirt"/' /etc/libvirt/libvirtd.conf
 sed -i 's/#unix_sock_rw_perms = "0770"/unix_sock_rw_perms = "0770"/' /etc/libvirt/libvirtd.conf
 sed -i 's/#unix_sock_dir = "\/var\/run\/libvirt"/unix_sock_dir = "\/var\/run\/libvirt"/' /etc/libvirt/libvirtd.conf
 sed -i 's/#auth_unix_rw = "none"/auth_unix_rw = "none"/' /etc/libvirt/libvirtd.conf


 echo '
 #################################################################
 #####       NETWORK CONFIGURATION                           #####
 #################################################################'
 # Network config (if the second parameter is net)
 echo "Interface ==> $interface"
 if [ -n "$interface" ]
 then


   # For management and data interfaces
   rm -f /etc/udev/rules.d/pci_config.rules # it will be created to define VFs


   # Set ONBOOT=on and MTU=9000 on the interface used for the bridges
   echo "configuring iface $interface"

 #MTU for interfaces and bridges
 MTU=9000

 cp /etc/network/interfaces interfaces.tmp


   #Create infrastructure bridge, normally used for connecting to compute nodes, openflow controller, ...


     #Create VLAN for infrastructure bridge

  echo "
 ######### CUTLINE #########

 auto ${interface}
 iface ${interface} inet static
 	mtu $MTU

 auto ${interface}.1001
 iface ${interface}.1001 inet static
 	mtu $MTU
 " >> interfaces.tmp

  echo "ifconfig ${interface} mtu $MTU
  ifconfig ${interface} up
 " > mtu.tmp


   #Create bridge interfaces
   echo "Creating bridge ifaces: "
   for ((i=1;i<=20;i++))
   do
     i2digits=$i
     [ $i -lt 10 ] && i2digits="0$i"
     echo "    virbrMan$i  vlan 20$i2digits"

     j=$i

  echo "
 auto ${interface}.20$i2digits
 iface ${interface}.20$i2digits inet static
 	mtu $MTU

 auto virbrMan$j
 iface virbrMan$j inet static
 	bridge_ports ${interface}.20$i2digits
 	mtu $MTU
 " >> interfaces.tmp

  echo "ifconfig ${interface}.20$i2digits mtu $MTU
 ifconfig virbrMan$j mtu $MTU
 ifconfig virbrMan$j up
 " >> mtu.tmp

   done

  echo "
 auto em2.1001
 iface em2.1001 inet static

 auto virbrInf
 iface virbrInf inet static
 	bridge_ports em2.1001
 " >> interfaces.tmp

  echo "ifconfig em2.1001 mtu $MTU
 ifconfig virbrInf mtu $MTU
 ifconfig virbrInf up
 " >> mtu.tmp

 if ! grep -q "#### CUTLINE ####" /etc/network/interfaces
 then
 	echo "====== Copying interfaces.tmp to /etc/network/interfaces"
 	cp interfaces.tmp /etc/network/interfaces
 fi


   #popd
 fi


 # Activate 8 Virtual Functions per PF on Niantic cards (ixgbe driver)
 if [[ `lsmod | cut -d" " -f1 | grep "ixgbe" | grep -v vf` ]]
 then
 	if ! grep -q "ixgbe" /etc/modprobe.d/ixgbe.conf
 	then
 	echo "options ixgbe max_vfs=8" >> /etc/modprobe.d/ixgbe.conf
 	fi

 fi

 # Set dataplane MTU

 echo "sleep 10" >> mtu.tmp

 interfaces=`ifconfig -a | grep ^p | cut -d " " -f 1`
 for ph in $interfaces
 do
         echo "ifconfig $ph mtu $MTU" >> mtu.tmp
         echo "ifconfig $ph up" >> mtu.tmp
 done


 cp mtu.tmp /etc/setmtu.sh
 chmod +x /etc/setmtu.sh

 # To define 8 VFs per PF we do it on rc.local, because the driver needs to be unloaded and loaded again
 #if ! grep -q "NFV" /etc/rc.local
 #then
   echo "#!/bin/sh -e
 " > /etc/rc.local
   echo "# NFV" >> /etc/rc.local
   echo "modprobe -r ixgbe" >> /etc/rc.local
   echo "modprobe ixgbe max_vfs=8" >> /etc/rc.local
   echo "/etc/setmtu.sh" >> /etc/rc.local
   echo "
 exit 0" >> /etc/rc.local
   echo "" >> /etc/rc.local

   chmod +x /etc/rc.d/rc.local

 #fi

 chmod a+rwx /var/lib/libvirt/images
 mkdir /usr/libexec/
 pushd /usr/libexec/
 ln -s /usr/bin/qemu-system-x86_64 qemu-kvm
 popd

 #Deactivating apparmor while looking for a better solution
 /etc/init.d/apparmor stop
 update-rc.d -f apparmor remove

 echo
 echo "Do not forget to create a shared (NFS, Samba, ...) where original virtual machine images are allocated"
 echo
 echo "Do not forget to copy the public ssh key into /home/${user_name}/.ssh/authorized_keys for authomatic login from openvim controller"
 echo

 echo "Reboot the system to make the changes effective"
	#!/bin/bash

	##
	# Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
	# This file is part of openvim
	# All Rights Reserved.
	#
	# Licensed under the Apache License, Version 2.0 (the "License"); you may
	# not use this file except in compliance with the License. You may obtain
	# a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
	# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
	# License for the specific language governing permissions and limitations
	# under the License.
	#
	# For those usages not covered by the Apache License, Version 2.0 please
	# contact with: nfvlabs@tid.es
	##

	# Authors: Antonio Lopez, Pablo Montes, Alfonso Tierno
	# June 2015

	# Personalize RHEL7.1 on compute nodes
	# Prepared to work with the following network card drivers:
	# tg3, igb drivers for management interfaces
	# ixgbe (Intel Niantic) and i40e (Intel Fortville) drivers for data plane interfaces

	# To download:
	# wget https://raw.githubusercontent.com/nfvlabs/openmano/master/scripts/configure-compute-node-RHEL7.1.sh
	# To execute:
	# chmod +x ./configure-compute-node-RHEL7.1.sh
	# sudo ./configure-compute-node-RHEL7.1.sh <user> <iface>

	# Assumptions:
	# All virtualization options activated on BIOS (vt-d, vt-x, SR-IOV, no power savings...)
	# RHEL7.1 installed without /home partition and with the following packages selection:
	# @base, @core, @development, @network-file-system-client, @virtualization-hypervisor, @virtualization-platform, @virtualization-tools


	function usage(){
	echo -e "Usage: sudo $0 [-y] <user-name> [ <iface-name> [<ip-address>\|dhcp] ]"
	echo -e " Configure compute host for VIM usage. (version 0.4). Params:"
	echo -e " -y do not prompt for confirmation. If a new user is created, the user name is set as password"
	echo -e " <user-name> Create if not exist and configure this user for openvim to connect"
	echo -e " <iface-name> if suplied creates bridge interfaces on this interface, needed for openvim"
	echo -e " ip or dhcp if suplied, configure the interface with this ip address (/24) or 'dhcp' "
	}


	#1 CHECK input parameters
	#1.1 root privileges
	[ "$USER" != "root" ] && echo "Needed root privileges" && usage && exit -1

	#1.2 input parameters
	FORCE=""
	while getopts "y" o; do
	case "${o}" in
	y)
	FORCE="yes"
	;;
	*)
	usage
	exit -1
	;;
	esac
	done
	shift $((OPTIND-1))



	if [ $# -lt 1 ]
	then
	usage
	exit
	fi


	user_name=$1
	interface=$2
	ip_iface=$3

	if [ -n "$interface" ] && ! ifconfig $interface &> /dev/null
	then
	echo "Error: interface '$interface' is not present in the system"
	usage
	exit 1
	fi

	echo '
	#################################################################
	##### INSTALL NEEDED PACKETS #####
	#################################################################'

	# Required packages
	apt-get -y update
	#apt-get -y install grub-common screen virt-manager ethtool build-essential x11-common x11-utils x11-apps libguestfs-tools hwloc libguestfs-tools numactl vlan nfs-common nfs-kernel-server
	apt-get -y install grub-common screen virt-manager ethtool build-essential x11-common x11-utils libguestfs-tools hwloc libguestfs-tools numactl vlan nfs-common nfs-kernel-server

	echo "Remove unneeded packages....."
	apt-get -y autoremove
	# Selinux management
	#yum install -y policycoreutils-python



	echo '
	#################################################################
	##### INSTALL USER #####
	#################################################################'

	# Add required groups
	groupadd -f admin
	groupadd -f libvirt #for other operating systems may be libvirtd

	# Adds user, default password same as name
	if grep -q "^${user_name}:" /etc/passwd
	then
	#user exist, add to group
	echo "adding user ${user_name} to groups libvirt,admin"
	usermod -a -G libvirt,admin -g admin $user_name
	else
	#create user if it does not exist
	[ -z "$FORCE" ] && read -p "user '${user_name}' does not exist, create (Y/n)" kk
	if ! [ -z "$kk" -o "$kk"="y" -o "$kk"="Y" ]
	then
	exit
	fi
	echo "creating and configuring user ${user_name}"
	useradd -m -G libvirt,admin -g admin $user_name
	#Password
	if [ -z "$FORCE" ]
	then
	echo "Provide a password for $user_name"
	passwd $user_name
	else
	echo -e "$user_name\n$user_name" \| passwd --stdin $user_name
	fi
	fi

	# Allow admin users to access without password
	if ! grep -q "#openmano" /etc/sudoers
	then
	cat >> /home/${user_name}/script_visudo.sh << EOL
	#!/bin/bash
	cat \$1 \| awk '(\$0~"requiretty"){print "#"\$0}(\$0!~"requiretty"){print \$0}' > tmp
	cat tmp > \$1
	rm tmp
	echo "" >> \$1
	echo "#openmano allow to group admin to grant root privileges without password" >> \$1
	echo "%admin ALL=(ALL) NOPASSWD: ALL" >> \$1
	EOL
	chmod +x /home/${user_name}/script_visudo.sh
	echo "allowing admin user to get root privileges withut password"
	export EDITOR=/home/${user_name}/script_visudo.sh && sudo -E visudo
	rm -f /home/${user_name}/script_visudo.sh
	fi


	echo '
	#################################################################
	##### INSTALL HUGEPAGES ISOLCPUS GRUB #####
	#################################################################'

	# Huge pages 1G auto mount
	mkdir -p /mnt/huge
	if ! grep -q "Huge pages" /etc/fstab
	then
	echo "" >> /etc/fstab
	echo "# Huge pages" >> /etc/fstab
	echo "nodev /mnt/huge hugetlbfs pagesize=1GB 0 0" >> /etc/fstab
	echo "" >> /etc/fstab
	fi

	# Grub virtualization options:

	# Get isolcpus
	isolcpus=`gawk 'BEGIN{pre=-2;}
	($1=="processor"){pro=$3;}
	($1=="core" && $4!=0){
	if (pre+1==pro){endrange="-" pro}
	else{cpus=cpus endrange sep pro; sep=","; endrange="";};
	pre=pro;}
	END{printf("%s",cpus endrange);}' /proc/cpuinfo`


	echo "CPUS: $isolcpus"

	# Huge pages reservation file: reserving all memory apart from 4GB per NUMA node
	# Get the number of hugepages: all memory but 8GB reserved for the OS
	#totalmem=`dmidecode --type 17\|grep Size \|grep MB \|gawk '{suma+=$2} END {print suma/1024}'`
	#hugepages=$(($totalmem-8))

	if ! [ -f /usr/lib/systemd/hugetlb-reserve-pages ]
	then
	cat > /usr/lib/systemd/hugetlb-reserve-pages << EOL
	#!/bin/bash
	nodes_path=/sys/devices/system/node/
	if [ ! -d \$nodes_path ]; then
	echo "ERROR: \$nodes_path does not exist"
	exit 1
	fi

	reserve_pages()
	{
	echo \$1 > \$nodes_path/\$2/hugepages/hugepages-1048576kB/nr_hugepages
	}

	# This example reserves all available memory apart from 4 GB for linux
	# using 1GB size. You can modify it to your needs or comment the lines
	# to avoid reserve memory in a numa node
	EOL
	for f in /sys/devices/system/node/node?/meminfo
	do
	node=`head -n1 $f \| gawk '($5=="kB"){print $2}'`
	memory=`head -n1 $f \| gawk '($5=="kB"){print $4}'`
	memory=$((memory+1048576-1)) #memory must be ceiled
	memory=$((memory/1048576)) #from `kB to GB
	#if memory
	[ $memory -gt 4 ] && echo "reserve_pages $((memory-4)) node$node" >> /usr/lib/systemd/hugetlb-reserve-pages
	done

	# Run the following commands to enable huge pages early boot reservation:
	chmod +x /usr/lib/systemd/hugetlb-reserve-pages
	systemctl enable hugetlb-gigantic-pages
	fi

	# Prepares the text to add at the end of the grub line, including blacklisting ixgbevf driver in the host
	memtotal=`grep MemTotal /proc/meminfo \| awk '{ print $2 }' `
	hpages=$(( ($memtotal/(1024*1024))-8 ))

	memtotal=$((memtotal+1048576-1)) #memory must be ceiled
	memtotal=$((memtotal/1048576)) #from `kB to GBa
	hpages=$((memtotal-8))
	[[ $hpages -lt 0 ]] $$ hpages=0


	echo "------> memtotal: $memtotal"

	textokernel="intel_iommu=on default_hugepagesz=1G hugepagesz=1G hugepages=$hpages isolcpus=$isolcpus modprobe.blacklist=ixgbevf modprobe.blacklist=i40evf"

	echo "Text to kernel: $textokernel"


	# Add text to the kernel line
	if ! grep -q "intel_iommu=on default_hugepagesz=1G hugepagesz=1G" /etc/default/grub
	then
	echo ">>>>>>> adding cmdline ${textokernel}"
	sed -i "/^GRUB_CMDLINE_LINUX_DEFAULT=/s/\"\$/${textokernel}\"/" /etc/default/grub
	# grub2 upgrade
	#grub2-mkconfig -o /boot/grub2/grub.cfg
	update-grub
	fi

	echo '
	#################################################################
	##### OTHER CONFIGURATION #####
	#################################################################'

	# Links the OpenMANO required folder /opt/VNF/images to /var/lib/libvirt/images. The OS installation
	# should have only a / partition with all possible space available

	echo " link /opt/VNF/images to /var/lib/libvirt/images"
	if [ "$user_name" != "" ]
	then
	#mkdir -p /home/${user_name}/VNF_images
	#chown -R ${user_name}:admin /home/${user_name}/VNF_images
	#chmod go+x $HOME

	# The orchestator needs to link the images folder
	rm -f /opt/VNF/images
	mkdir -p /opt/VNF/
	ln -s /var/lib/libvirt/images /opt/VNF/images
	chown -R ${user_name}:admin /opt/VNF
	chown -R root:admin /var/lib/libvirt/images
	chmod g+rwx /var/lib/libvirt/images

	# Selinux management
	#echo "configure Selinux management"
	#semanage fcontext -a -t virt_image_t "/home/${user_name}/VNF_images(/.*)?"
	#cat /etc/selinux/targeted/contexts/files/file_contexts.local \|grep virt_image
	#restorecon -R -v /home/${user_name}/VNF_images
	else
	mkdir -p /opt/VNF/images
	chmod o+rx /opt/VNF/images
	fi

	echo "creating local information /opt/VNF/images/hostinfo.yaml"
	echo "#By default openvim assumes control plane interface naming as em1,em2,em3,em4 " > /opt/VNF/images/hostinfo.yaml
	echo "#and bridge ifaces as virbrMan1, virbrMan2, ..." >> /opt/VNF/images/hostinfo.yaml
	echo "#if compute node contain a different name it must be indicated in this file" >> /opt/VNF/images/hostinfo.yaml
	echo "#with the format extandard-name: compute-name" >> /opt/VNF/images/hostinfo.yaml
	if [ "$interface" != "" -a "$interface" != "em1" ]
	then
	echo "iface_names:" >> /opt/VNF/images/hostinfo.yaml
	echo " em1: ${interface}" >> /opt/VNF/images/hostinfo.yaml
	fi
	chmod o+r /opt/VNF/images/hostinfo.yaml

	# deactivate memory overcommit
	#echo "deactivate memory overcommit"
	#service ksmtuned stop
	#service ksm stop
	#chkconfig ksmtuned off
	#chkconfig ksm off


	# Libvirt options (uncomment the following)
	echo "configure Libvirt options"
	sed -i 's/#unix_sock_group = "libvirt"/unix_sock_group = "libvirt"/' /etc/libvirt/libvirtd.conf
	sed -i 's/#unix_sock_rw_perms = "0770"/unix_sock_rw_perms = "0770"/' /etc/libvirt/libvirtd.conf
	sed -i 's/#unix_sock_dir = "\/var\/run\/libvirt"/unix_sock_dir = "\/var\/run\/libvirt"/' /etc/libvirt/libvirtd.conf
	sed -i 's/#auth_unix_rw = "none"/auth_unix_rw = "none"/' /etc/libvirt/libvirtd.conf


	echo '
	#################################################################
	##### NETWORK CONFIGURATION #####
	#################################################################'
	# Network config (if the second parameter is net)
	echo "Interface ==> $interface"
	if [ -n "$interface" ]
	then


	# For management and data interfaces
	rm -f /etc/udev/rules.d/pci_config.rules # it will be created to define VFs


	# Set ONBOOT=on and MTU=9000 on the interface used for the bridges
	echo "configuring iface $interface"

	#MTU for interfaces and bridges
	MTU=9000

	cp /etc/network/interfaces interfaces.tmp


	#Create infrastructure bridge, normally used for connecting to compute nodes, openflow controller, ...


	#Create VLAN for infrastructure bridge

	echo "
	######### CUTLINE #########

	auto ${interface}
	iface ${interface} inet static
	mtu $MTU

	auto ${interface}.1001
	iface ${interface}.1001 inet static
	mtu $MTU
	" >> interfaces.tmp

	echo "ifconfig ${interface} mtu $MTU
	ifconfig ${interface} up
	" > mtu.tmp


	#Create bridge interfaces
	echo "Creating bridge ifaces: "
	for ((i=1;i<=20;i++))
	do
	i2digits=$i
	[ $i -lt 10 ] && i2digits="0$i"
	echo " virbrMan$i vlan 20$i2digits"

	j=$i

	echo "
	auto ${interface}.20$i2digits
	iface ${interface}.20$i2digits inet static
	mtu $MTU

	auto virbrMan$j
	iface virbrMan$j inet static
	bridge_ports ${interface}.20$i2digits
	mtu $MTU
	" >> interfaces.tmp

	echo "ifconfig ${interface}.20$i2digits mtu $MTU
	ifconfig virbrMan$j mtu $MTU
	ifconfig virbrMan$j up
	" >> mtu.tmp

	done

	echo "
	auto em2.1001
	iface em2.1001 inet static

	auto virbrInf
	iface virbrInf inet static
	bridge_ports em2.1001
	" >> interfaces.tmp

	echo "ifconfig em2.1001 mtu $MTU
	ifconfig virbrInf mtu $MTU
	ifconfig virbrInf up
	" >> mtu.tmp

	if ! grep -q "#### CUTLINE ####" /etc/network/interfaces
	then
	echo "====== Copying interfaces.tmp to /etc/network/interfaces"
	cp interfaces.tmp /etc/network/interfaces
	fi


	#popd
	fi


	# Activate 8 Virtual Functions per PF on Niantic cards (ixgbe driver)
	if [[ `lsmod \| cut -d" " -f1 \| grep "ixgbe" \| grep -v vf` ]]
	then
	if ! grep -q "ixgbe" /etc/modprobe.d/ixgbe.conf
	then
	echo "options ixgbe max_vfs=8" >> /etc/modprobe.d/ixgbe.conf
	fi

	fi

	# Set dataplane MTU

	echo "sleep 10" >> mtu.tmp

	interfaces=`ifconfig -a \| grep ^p \| cut -d " " -f 1`
	for ph in $interfaces
	do
	echo "ifconfig $ph mtu $MTU" >> mtu.tmp
	echo "ifconfig $ph up" >> mtu.tmp
	done



	cp mtu.tmp /etc/setmtu.sh
	chmod +x /etc/setmtu.sh

	# To define 8 VFs per PF we do it on rc.local, because the driver needs to be unloaded and loaded again
	#if ! grep -q "NFV" /etc/rc.local
	#then
	echo "#!/bin/sh -e
	" > /etc/rc.local
	echo "# NFV" >> /etc/rc.local
	echo "modprobe -r ixgbe" >> /etc/rc.local
	echo "modprobe ixgbe max_vfs=8" >> /etc/rc.local
	echo "/etc/setmtu.sh" >> /etc/rc.local
	echo "
	exit 0" >> /etc/rc.local
	echo "" >> /etc/rc.local

	chmod +x /etc/rc.d/rc.local

	#fi

	chmod a+rwx /var/lib/libvirt/images
	mkdir /usr/libexec/
	pushd /usr/libexec/
	ln -s /usr/bin/qemu-system-x86_64 qemu-kvm
	popd

	#Deactivating apparmor while looking for a better solution
	/etc/init.d/apparmor stop
	update-rc.d -f apparmor remove

	echo
	echo "Do not forget to create a shared (NFS, Samba, ...) where original virtual machine images are allocated"
	echo
	echo "Do not forget to copy the public ssh key into /home/${user_name}/.ssh/authorized_keys for authomatic login from openvim controller"
	echo

	echo "Reboot the system to make the changes effective"