openstack-ansible/doc/source/install-guide-revised-draft/targethosts-networkexample.rst

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Simple architecture: A single target host

Overview

This example uses the following parameters to configure networking on a single target host. See Figure 3.2, "Target hosts for infrastructure, networking, compute, and storage services" for a visual representation of these parameters in the architecture.

• VLANs:

  • Host management: Untagged/Native
  • Container management: 10
  • Tunnels: 30
  • Storage: 20

  Networks:

  • Host management: 10.240.0.0/22
  • Container management: 172.29.236.0/22
  • Tunnel: 172.29.240.0/22
  • Storage: 172.29.244.0/22

  Addresses:

  • Host management: 10.240.0.11
  • Host management gateway: 10.240.0.1
  • DNS servers: 69.20.0.164 69.20.0.196
  • Container management: 172.29.236.11
  • Tunnel: 172.29.240.11
  • Storage: 172.29.244.11

Figure 3.2. Target host for infrastructure, networking, compute, and storage services

Modifying the network interfaces file

After establishing the initial host management network connectivity using the bond0 interface, modify the /etc/network/interfaces file as described in this procedure.

Contents of the /etc/network/interfaces file:

1. Physical interfaces:

   # Physical interface 1
   auto eth0
   iface eth0 inet manual
       bond-master bond0
       bond-primary eth0
   
   # Physical interface 2
   auto eth1
   iface eth1 inet manual
       bond-master bond1
       bond-primary eth1
   
   # Physical interface 3
   auto eth2
   iface eth2 inet manual
       bond-master bond0
   
   # Physical interface 4
   auto eth3
   iface eth3 inet manual
       bond-master bond1

2. Bonding interfaces:

   # Bond interface 0 (physical interfaces 1 and 3)
   auto bond0
   iface bond0 inet static
       bond-slaves eth0 eth2
       bond-mode active-backup
       bond-miimon 100
       bond-downdelay 200
       bond-updelay 200
       address 10.240.0.11
       netmask 255.255.252.0
       gateway 10.240.0.1
       dns-nameservers 69.20.0.164 69.20.0.196
   
   # Bond interface 1 (physical interfaces 2 and 4)
   auto bond1
   iface bond1 inet manual
       bond-slaves eth1 eth3
       bond-mode active-backup
       bond-miimon 100
       bond-downdelay 250
       bond-updelay 250

3. Logical (VLAN) interfaces:

   # Container management VLAN interface
   iface bond0.10 inet manual
       vlan-raw-device bond0
   
   # OpenStack Networking VXLAN (tunnel/overlay) VLAN interface
   iface bond1.30 inet manual
       vlan-raw-device bond1
   
   # Storage network VLAN interface (optional)
   iface bond0.20 inet manual
       vlan-raw-device bond0

4. Bridge devices:

   # Container management bridge
   auto br-mgmt
   iface br-mgmt inet static
       bridge_stp off
       bridge_waitport 0
       bridge_fd 0
       # Bridge port references tagged interface
       bridge_ports bond0.10
       address 172.29.236.11
       netmask 255.255.252.0
       dns-nameservers 69.20.0.164 69.20.0.196
   
   # OpenStack Networking VXLAN (tunnel/overlay) bridge
   auto br-vxlan
   iface br-vxlan inet static
       bridge_stp off
       bridge_waitport 0
       bridge_fd 0
       # Bridge port references tagged interface
       bridge_ports bond1.30
       address 172.29.240.11
       netmask 255.255.252.0
   
   # OpenStack Networking VLAN bridge
   auto br-vlan
   iface br-vlan inet manual
       bridge_stp off
       bridge_waitport 0
       bridge_fd 0
       # Bridge port references untagged interface
       bridge_ports bond1
   
   # Storage bridge
   auto br-storage
   iface br-storage inet static
       bridge_stp off
       bridge_waitport 0
       bridge_fd 0
       # Bridge port reference tagged interface
       bridge_ports bond0.20
       address 172.29.244.11
       netmask 255.255.252.0

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