verification environment for http://d.hatena.ne.jp/hirose31/20060817/1155795703

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  [ :client ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "10.0.0.70"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
ip route add 172.16.0.0/24 dev eth1 via 10.0.0.254
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end

  [ :client2 ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "192.168.8.50"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
ip route del default
ip route add default dev eth1 via 192.168.8.254
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end

  [ :rt ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "10.0.0.254"
      config.vm.network :private_network, ip: "192.168.8.254"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
ip route add 172.16.0.0/24 dev eth2
sysctl -w net.ipv4.ip_forward=1
iptables -F
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end

  [ :lb ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "192.168.8.10"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
yum -y install keepalived ipvsadm
iptables -F
iptables -t mangle -A PREROUTING -d 172.16.0.100 -j MARK --set-mark 1
ip rule add prio 100 fwmark 1 table 100
ip route add local 0/0 dev lo table 100
sysctl -w net.ipv4.conf.eth1.rp_filter=0
ip route del default
ip route add default dev eth1 via 192.168.8.254
cat <<FIN >/etc/keepalived/keepalived.conf
global_defs {
   router_id LVS_DEVEL
}
vrrp_instance VI_1 {
    state MASTER
    interface eth1
    virtual_router_id 51
    priority 100
    advert_int 1
    virtual_ipaddress {
        172.16.0.100
    }
}
virtual_server 172.16.0.100 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    protocol TCP
    real_server 192.168.8.101 80 {
        weight 1
    }
    real_server 192.168.8.102 80 {
        weight 1
    }
}
FIN
service keepalived start
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end

  [ :web1 ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "192.168.8.101"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
yum -y install httpd
service httpd start
iptables -F
iptables -t nat -A PREROUTING -d 172.16.0.100 -j REDIRECT
ip route del default
ip route add default dev eth1 via 192.168.8.254
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end

  [ :web2 ].each do |sym|
    config.vm.define sym do |config|
      config.vm.box = sym.to_s
      config.vm.hostname = sym.to_s
      config.vm.box_url = "https://dl.dropboxusercontent.com/u/423294/box/c6.box"

      config.vm.network :private_network, ip: "192.168.8.102"

      config.vm.provider :virtualbox do |vb|
        vb.gui = false
        vb.customize ["modifyvm", :id, "--cpus", "2"]
        vb.customize ["modifyvm", :id, "--memory", "512"]
      end

      $script = <<SCRIPT
yum -y install tcpdump
yum -y install httpd
service httpd start
iptables -F
iptables -t nat -A PREROUTING -d 172.16.0.100 -j REDIRECT
ip route del default
ip route add default dev eth1 via 192.168.8.254
SCRIPT
      config.vm.provision "shell", inline: $script
    end
  end
end

network diagram
https://cacoo.com/diagrams/yEH7TUJ3crv4OMG9