Monitor network connections and restart it if needed [Raspberry PI]

check_networks_and_restart.rb

def ping host
  system("ping -c 1 #{host}")
end

loop do
  sleep 60

  unless ping('google.com') || ping('facebook.com') || ping('wikipedia.org')
    `sudo ifconfig eth0 down`
    sleep 5
    `sudo ifconfig eth0 up`
  end

  unless ping('10.8.0.1')
    `sudo systemctl restart openvpn`
  end

  sleep 300
end