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Appendix B: Example production environment configuration
Introduction
This appendix describes an example production environment for a working OpenStack-Ansible (OSA) deployment with high availability services.
This example environment has the following characteristics:
- Three infrastructure (control plane) hosts
- Two compute hosts
- One NFS storage device
- One log aggregation host
- Multiple Network Interface Cards (NIC) configured as bonded pairs for each host
- Full compute kit with the Telemetry service (ceilometer) included, with NFS configured as a storage back end for the Image (glance), and Block Storage (cinder) services
- 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 |
|
| Tunnel (VXLAN) Network | 172.29.240.0/22 |
|
| Storage Network | 172.29.244.0/22 |
|
IP assignments
The following host name and IP address assignments are used for this environment.
| Host name | Management IP | Tunnel (VxLAN) IP | Storage IP |
|---|---|---|---|
| lb_vip_address | 172.29.236.9 | ||
| infra1 | 172.29.236.11 | ||
| infra2 | 172.29.236.12 | ||
| infra3 | 172.29.236.13 | ||
| log1 | 172.29.236.14 | ||
| NFS Storage | 172.29.244.15 | ||
| compute1 | 172.29.236.16 | 172.29.240.16 | 172.29.244.16 |
| compute2 | 172.29.236.17 | 172.29.240.17 | 172.29.244.17 |
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.prod.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.prod.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, the cinder-volume runs in a
container on the infrastructure hosts. To achieve this, implement
/etc/openstack_deploy/env.d/cinder.yml with the following
content:
../../etc/openstack_deploy/env.d/cinder-volume.yml.container.example
User variables
The /etc/openstack_deploy/user_variables.yml file
defines the global overrides for the default variables.
For this environment, implement the load balancer on the
infrastructure hosts. Ensure that keepalived is also configured with
HAProxy in /etc/openstack_deploy/user_variables.yml with
the following content.
../../etc/openstack_deploy/user_variables.yml.prod.example