openstack-ansible-os_nova/doc/source/index.rst

Nova role for OpenStack-Ansible

configure-nova.rst

tags

openstack, nova, cloud, ansible

category

*nix

This role will install the following Systemd services:

• nova-server
• nova-compute

To clone or view the source code for this repository, visit the role repository for os_nova.

Default variables

../../defaults/main.yml

Dependencies

This role needs pip >= 7.1 installed on the target host.

Example playbook

../../examples/playbook.yml

External Restart Hooks

When the role performs a restart of the service, it will notify an Ansible handler named Manage LB, which is a noop within this role. In the playbook, other roles may be loaded before and after this role which will implement Ansible handler listeners for Manage LB, allowing external roles to manage the load balancer endpoints responsible for sending traffic to the servers being restarted by marking them in maintenance or active mode, draining sessions, etc. For an example implementation, please reference the ansible-haproxy-endpoints role used by the openstack-ansible project.

Tags

This role supports two tags: nova-install and nova-config

The nova-install tag can be used to install and upgrade.

The nova-config tag can be used to manage configuration.

CPU platform compatibility

This role supports multiple CPU architecture types. At least one repo_build node must exist for each CPU type that is in use in the deployment.

Currently supported CPU architectures:

• x86_64 / amd64
• ppc64le

At this time, ppc64le is only supported for the Compute node type. It can not be used to manage the OpenStack-Ansible management nodes.

Compute driver compatibility

This role supports multiple nova compute driver types. The following compute drivers are supported:

• libvirt (default)
• ironic
• lxd (via nova-lxd)

The driver type is automatically detected by the OpenStack Ansible Nova role for the following compute driver types:

• libvirt (kvm / qemu)

Any mix and match of compute node types can be used for those platforms, except for ironic.

If using the lxd driver, the compute type must be specified using the nova_virt_type variable.

The nova_virt_type may be set in /etc/openstack_deploy/user_variables.yml, for example:

nova_virt_type: lxd

You can set nova_virt_type per host by using host_vars in /etc/openstack_deploy/openstack_user_config.yml. For example:

compute_hosts:
 aio1:
   ip: 172.29.236.100
   host_vars:
     nova_virt_type: lxd

If nova_virt_type is set in /etc/openstack_deploy/user_variables.yml, all nodes in the deployment are set to that hypervisor type. Setting nova_virt_type in both /etc/openstack_deploy/user_variables.yml and /etc/openstack_deploy/openstack_user_config.yml will always result in the value specified in /etc/openstack_deploy/user_variables.yml being set on all hosts.