openstack-ansible/doc/source/user/test/example.rst

Test environment example

Here is an example test environment for a working OpenStack-Ansible (OSA) deployment with a small number of servers.

This example environment has the following characteristics:

• One infrastructure (control plane) host (8 vCPU, 8 GB RAM, 60 GB HDD)
• One compute host (8 vCPU, 8 GB RAM, 60 GB HDD)
• One Network Interface Card (NIC) for each host
• A basic compute kit environment, with the Image (glance) and Compute (nova) services set to use file-backed storage.
• Internet access via the router address 172.29.236.1 on the Management Network

Network configuration

Network CIDR/VLAN assignments

The following CIDR and VLAN assignments are used for this environment.

Network	CIDR	VLAN
Management Network	172.29.236.0/22	10
Tunnel (VXLAN) Network	172.29.240.0/22	30
Storage Network	172.29.244.0/22	20

IP assignments

The following host name and IP address assignments are used for this environment.

Host name	Management IP	Tunnel (VxLAN) IP	Storage IP
infra1	172.29.236.11
compute1	172.29.236.12	172.29.240.12	172.29.244.12
storage1	172.29.236.13		172.29.244.13

Host network configuration

Each host will require the correct network bridges to be implemented. The following is the /etc/network/interfaces file for infra1.

Note

If your environment does not have eth0, but instead has p1p1 or some other interface name, ensure that all references to eth0 in all configuration files are replaced with the appropriate name. The same applies to additional network interfaces.

../../../../etc/network/interfaces.d/openstack_interface.cfg.test.example

Deployment configuration

Environment layout

The /etc/openstack_deploy/openstack_user_config.yml file defines the environment layout.

The following configuration describes the layout for this environment.

../../../../etc/openstack_deploy/openstack_user_config.yml.test.example

Environment customizations

The optionally deployed files in /etc/openstack_deploy/env.d allow the customization of Ansible groups. This allows the deployer to set whether the services will run in a container (the default), or on the host (on metal).

For this environment you do not need the /etc/openstack_deploy/env.d folder as the defaults set by OpenStack-Ansible are suitable.

User variables

The /etc/openstack_deploy/user_variables.yml file defines the global overrides for the default variables.

For this environment, if you want to use the same IP address for the internal and external endpoints, you will need to ensure that the internal and public OpenStack endpoints are served with the same protocol. This is done with the following content:

../../../../etc/openstack_deploy/user_variables.yml.test.example