Vnx-install-fedora23

VNX Installation over Fedora

Follow this steps to install VNX over Fedora 23:

• Install packages:

dnf install -y qemu-kvm libvirt virt-manager virt-viewer perl-XML-LibXML
dnf install -y perl-Sys-Virt perl-NetAddr-IP perl-XML-LibXML perl-XML-Tidy 
dnf install -y perl-AppConfig perl-Readonly perl-Net-Pcap perl-Net-IPv6Addr
dnf install -y perl-Net-Telnet perl-IO-Pty-Easy  perl-Exception-Class pv
dnf install -y wmctrl uml_utilities perl-DBI libxml2-devel perl-Net-IP 
dnf install -y roxterm xterm graphviz tree curl w3m  picocom expect pv
dnf install -y tunctl screen wget lxc lxc-extra lxc-templates openvswitch

• Tune libvirt configuration to work with VNX. In particular, edit /etc/libvirt/qemu.conf file and set the following parameters:

security_driver = "none"
user = "root"
group = "root"
cgroup_device_acl = [
   "/dev/null", "/dev/full", "/dev/zero",
   "/dev/random", "/dev/urandom",
   "/dev/ptmx", "/dev/kvm", "/dev/kqemu",
   "/dev/rtc", "/dev/hpet", "/dev/vfio/vfio", "/dev/net/tun"
]

(you have to add "/dev/net/tun") and restart libvirtd for the changes to take effect:

sudo systemctl restart libvirtd

• Check that libvirt is running correctly, for example, executing:

sudo virsh list
sudo virsh capabilities

• Install VNX:

mkdir /tmp/vnx-update
cd /tmp/vnx-update
wget -N http://vnx.dit.upm.es/vnx/vnx-latest.tgz
tar xfvz vnx-latest.tgz
cd vnx-*
./install_vnx

• Create the VNX config file (/etc/vnx.conf). You just can move the sample config file:

mv /usr/share/vnx/etc/vnx.conf.sample /etc/vnx.conf

• Edit /etc/vnx.conf file and change the following parameters:

[general]
console_term=roxterm   # gnome-terminal does not support --title option

[libvirt]
one_pass_autoconf=yes

[lxc]
union_type = 'overlayfs'
overlayfs_workdir_option = 'yes'

• Download root file systems from http://idefix.dit.upm.es/download/vnx/filesystems and install them following these instructions

Additional install steps for Dynamips support

• Install dynamips from GNS-3 sources:

yum -y groupinstall "Development Tools"
yum -y install cmake elfutils-libelf-devel libuuid-devel libpcap-devel
git clone https://github.com/GNS3/dynamips
cd dynamips
mkdir build
cd build
cmake
make
sudo make install

• Install dynagen:

wget http://downloads.sourceforge.net/project/dyna-gen/dynagen%20source%20_%20Linux/dynagen%200.11.0/dynagen-0.11.0-1.fc9.noarch.rpm
rpm -i dynagen-0.11.0-1.fc9.noarch.rpm

• Create systemd startup files:
• /usr/lib/systemd/scripts/dynamips.sh

#! /bin/sh
# -*- shell-script -*-

# Script to start dynamips on Fedora 
# Adapted for VNX (vnx.dit.upm.es) by David Fernandez (david at dit.upm.es) from http://wiki.call-cc.org/spiffy-systemd-scripts

dynamips=/usr/local/bin/dynamips
logfile=/var/log/dynamips.log
dynamips_port=7200

DATE_FORMAT="+%Y-%m-%d %H:%M:%S"

LOG_DIR="/var/log/"

start() {
 if [ ! -d "$LOG_DIR" ]; then
      echo "Log directory \"$LOG_DIR\" does not exist."
      exit 1
    fi

    echo "Starting dynamips..."
    echo "start: " `date "$DATE_FORMAT"` >> $logfile
    (/usr/local/bin/dynamips -H $dynamips_port -l $logfile &)  </dev/null &> $logfile
}

stop() {
    echo "Stopping dynamips..."
    echo "stop: " `date "$DATE_FORMAT"` >> $logfile
    pids=`ps ax | grep "$dynamips" | grep -v grep | awk '{print $1}'`
    if [ -z "$pids" ] ; then
       echo "dynamips is not running"
    else
        for pid in $pids; do
            echo "killing " $pid
            kill $pid
        done
    fi
}
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        sleep 1
        start
        ;;
    *) exit 1
esac

• /usr/lib/systemd/system/dynamips.service

[Unit]
Description=Dynamips

[Service]
Type=oneshot
ExecStart=/usr/lib/systemd/scripts/dynamips.sh start
ExecStop=/usr/lib/systemd/scripts/dynamips.sh stop
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

• Make the startup script executable and enable it:

chmod +x /usr/lib/systemd/scripts/dynamips.sh
systemctl enable dynamips

• Calculate the idle-pc value for your computer:

dynagen /usr/share/vnx/examples/R3640.net
console R3640     # type 'no' to exit the config wizard and wait 
              # for the router to completely start 
idlepc get R3640

Once you know the idlepc value for your system, include it in /etc/vnx.conf file.