rhel9-gns3-install.sh

#!/usr/bin/env bash

#---------------------------------------------------------------------------------------------------
#  *                              Rhel9-gns3-install
#    
#    Author: Bill Fritz
#    Description: The longest of roads...
#    Last Modified: 2023-03-15
#    
#---------------------------------------------------------------------------------------------------

# Update system and disable SELinux
update_system () {
  sudo dnf update
  sudo sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config # change SELinux to disabled in config file
  sudo grubby --update-kernel ALL --args selinux=0 # add kernel parameter to disable SELinux
}

install_gui_if_not () {
  if [ "$(systemctl get-default)" != graphical.target ]; then
      sudo dnf groupinstall -y "Server with GUI"
      sudo systemctl set-default graphical.target
      sudo systemctl isolate graphical # start GUI 
  fi
}

enable_codeready_repo () {
  sudo subscription-manager repos --enable codeready-builder-for-rhel-9-x86_64-rpms
}

required_tools () {
  sudo dnf install -y dnf-plugins-core git wget nano curl openssl tigervnc # install all required tools
  sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
  sudo dnf install -y python3-devel elfutils-libelf-devel libpcap-devel python3-pyqt5-sip python3-qt5 xterm cmake busybox libnsl telnet
  sudo dnf groupinstall -y 'Development Tools'
}

clone_gns3_sources () {
  cd /usr/local/src || exit
  mkdir gns3
  cd gns3 || exit
  git clone https://github.com/GNS3/gns3-server.git
  git clone https://github.com/GNS3/gns3-gui.git
  git clone https://github.com/GNS3/vpcs.git
  git clone https://github.com/GNS3/dynamips.git
  git clone https://github.com/GNS3/ubridge.git
}

install_pip_requirements () {
  sudo python3 -m pip install --upgrade pip
  cd /usr/local/src/gns3/gns3-server/ || exit
  sudo pip3 install -r requirements.txt
  sudo python3 setup.py install
  cd /usr/local/src/gns3/gns3-gui/ || exit
  pip3 install -r requirements.txt
  python3 setup.py install
}

configure_desktop_entry () {
  cp resources/linux/applications/gns3.desktop /usr/share/applications/
  cp -R resources/linux/icons/hicolor/ /usr/share/icons/
}

install_vpcs () {
  cd /usr/local/src/gns3/vpcs/src || exit
  ./mk.sh
  sudo cp vpcs /usr/local/bin/vpcs
}

install_dynamips () {
  cd /usr/local/src/gns3/dynamips/ || exit
  mkdir build 
  cd build/ || exit
  cmake ..
  make
  sudo make install
}

install_ubridge () {
  cd /usr/local/src/gns3/ubridge || exit
  make
  sudo make install
}

docker_setup () {
  sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
  sudo dnf -y install docker-ce docker-ce-cli containerd.io 
  sudo systemctl enable --now docker
  sudo usermod -aG docker "$(whoami)"  
}

libvirt_setup () {
  sudo dnf install -y libvirt qemu-kvm
  sudo usermod -aG libvirt "$(whoami)"
  sudo usermod -aG kvm "$(whoami)"
  sudo systemctl enable --now libvirtd
  sudo systemctl enable --now virtlogd
}

gns3_registry_install () {
  sudo git clone https://github.com/GNS3/gns3-registry.git /usr/local/share/gns3/gns3-registry
  sudo chmod -R 777 /usr/local/share/gns3/gns3-registry
}

sysctl_mods () {
  sudo sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/g' /etc/sysctl.conf
  sudo sed -i 's/#net.bridge.bridge-nf-call-iptables=1/net.bridge.bridge-nf-call-iptables=1/g' /etc/sysctl.conf
}

misc_setup () {
  sudo ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-kvm
  firewall-cmd --permanent --add-port=3080/tcp 
  firewall-cmd --reload
}

xrdp_setup () {
  sudo dnf install -y xrdp
  sudo systemctl enable --now xrdp
  sudo firewall-cmd --permanent --add-port=3389/tcp
  sudo firewall-cmd --reload
  echo gnome-session >~/.xsession
  
}

main() {
  update_system
  install_gui_if_not
  enable_codeready_repo
  required_tools
  clone_gns3_sources
  install_pip_requirements
  configure_desktop_entry
  install_vpcs
  install_dynamips
  install_ubridge
  docker_setup
  libvirt_setup
  sysctl_mods
  gns3_registry_install
  misc_setup
  xrdp_setup
  reboot
}

main