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Example TripleO Network Templates

This repository contains some example network templates that I use with TripleO in my various development environments. Below is a description of the particular environments that the templates target and instructions on how to use them.

The CIDRs and IP ranges in the respective network-environment.yaml files are what I use in my environments, so you will most likely need to customize them to match your environment (unless it already matches mine, which is...unlikely ;-).

Note that the only node types I have tested these templates with are Controller, Compute, and Ceph. You may notice that the Cinder and Swift types are commented out in the network-environment.yaml files, and this is why.


About as basic as you can get and still be doing network isolation in some form. Runs the external API endpoints on an external network, and everything else on the provisioning network. This is mostly useful for environments with two physical networks that don't have the ability to run with vlans, because it moves the user-facing bits of OpenStack onto a user-facing network and off the (in my case) unroutable provisioning network.

Environment Details

I have used this configuration in my home baremetal environment before I had a VLAN capable switch, but now I use it primarily with an OpenStack Virtual Baremetal environment that is not VLAN capable either. In the virtual environment, the target "baremetal" systems have their first nic on a private, unroutable provisioning network, and their second nic on a "public" network on which the undercloud also has an interface.

Usage Instructions

# Assumes this repo has been cloned to ~/tripleo-network-templates
cp -r /usr/share/openstack-tripleo-heat-templates ~/simple-templates
cp ~/tripleo-network-templates/simple/network-isolation.yaml ~/simple-templates/environments/network-isolation.yaml

Edit ~/tripleo-network-templates/simple/network-environment.yaml to reflect your network setup.

Required parameters to deploy command (in addition to any others):

--templates ~/simple-templates -e ~/tripleo-network-templates/simple/network-environment.yaml -e ~/simple-templates/environments/network-isolation.yaml

Simple Bond/Simple LinuxBond

These templates implement the same network architecture as the Simple templates, but instead of a single public nic, they use two nics bonded together. This means the templates require at least three nics on the overcloud nodes.

Otherwise these templates can be used the same way as Simple.

Untagged External

This is what I use for my home baremetal environment. I'm not able to run a standard single nic with vlans configuration because I only have a single VLAN-capable switch, and additionally my provisioning network is a completely separate, isolated switch connected to a dedicated port on each server.

To address these issues, the templates in untagged-external add a separate nic interface for the provisioning network, and configure the OVS bridge so that the external network is untagged. This allows me to communicate with the external addresses from my VLAN-less home network while still using VLAN isolation for all of the other networks.


It seems to me that there should be some way to untag traffic that is outgoing from the switch port that is connected to the rest of my network, but my switch is pretty much VLAN for Dummies, so it doesn't expose more advanced configuration and I haven't figured out how to make it do that. I would still need custom nic configs for the additional provisioning nic anyway, so I haven't spent much time investigating it.

Environment Details

Each target baremetal system has two network interfaces. The first is connected to a VLAN capable switch on my home network ( The second is connected to a dedicated, isolated provisioning switch, which I have arbitrarily assigned the network.

Usage Instructions

Edit untagged-external/network-environment.yaml to reflect your network.

If you do not have any single digit CIDR masks in your network configuration (which the example configuration does), the following parameters are all you need to pass to the deploy command. If you _do_ have a single digit CIDR like I do, then see below for alternate instructions:

# Assumes this repo has been cloned to ~/tripleo-network-templates
-e ~/tripleo-network-templates/untagged-external/network-environment.yaml -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml

Single Digit CIDR Fix

The following instructions will enable a single digit CIDR mask on the external network, as found in the example values for these templates:

# Assumes this repo has been cloned to ~/tripleo-network-templates
cp -r /usr/share/openstack-tripleo-heat-templates ~/untagged-external-templates
sed -i 's/- {get_attr: \[ExternalPort, subnets, 0, cidr, -2\]}//' untagged-external-templates/network/ports/external.yaml

Required parameters to deploy command (in addition to any others):

--templates ~/untagged-external-templates -e ~/tripleo-network-templates/untagged-external/network-environment.yaml -e ~/untagged-external-templates/environments/network-isolation.yaml

Multiple NICs

This is a version of the upstream multiple-nics templates that is designed to work with a multiple nic OVB setup.

Environment Details

Each baremetal system has 6 nics attached to it, all on separate networks. The first nic is the provisioning network, the second is the external network. Both of these must also be connected to the undercloud and configured appropriately.

The other networks are simply generic networks that are used for the other isolated networks. They do not need to be attached to the undercloud, but all of the nics must be on all of the systems even if one of the networks is not used on the node type.

Usage Instructions

Edit ~/tripleo-network-templates/multiple-nics/network-environment.yaml to reflect your network setup.

Required parameters to deploy command (in addition to any others):

# Assumes this repo has been cloned to ~/tripleo-network-templates
--templates -e ~/tripleo-network-templates/multiple-nics/network-environment.yaml -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml