# Configuration¶

The virtual environment deployed by tripleo-quickstart is largely controlled by variables that get there defaults from the common role.

You configure tripleo-quickstart by placing variable definitions in a YAML file and passing that to ansible using the -e command line option, like this:

ansible-playbook playbook.yml -e @/path/myconfigfile.yml


## Specifying custom heat templates¶

The overcloud_templates_path variable can be used to define a different path where to get the heat templates. By default this variable will not be set.

The overcloud_templates_repo variable can be used to define the remote repository from where the templates need to be cloned. When this variable is set, along with overcloud_templates_path, the templates will be cloned from that remote repository into the target specified, and these will be used in overcloud deployment.

The overcloud_templates_branch variable can be used to specify the branch that needs to be cloned from a specific repository. When this variable is set, git will clone only the branch specified.

## Explicit Teardown¶

You can select what to delete prior to the run of quickstart adding a –teardown (or -T) options with the following parameters:

• nodes: default, remove only undercloud and overcloud nodes
• virthost: same as nodes but network setup is deleted too
• all: same as virthost but user setup in virthost is deleted too
• none: will not teardown anything (useful for testing multiple actions against a deployed overcloud)

## Undercloud customization¶

You can perform extra undercloud customization steps, using a script that will be applied with virt-customize on the final undercloud image. To allow that, you need to pass the undercloud_customize_script var, that needs to point to an script living on your filesystem. That script will be copied to working directory, and applied on the undercloud. The script can be in Jinja template format, so you can benefit from ansible var substitutions.

## Overcloud customization¶

You can perform extra overcloud customization steps, using a script that will be applied with virt-customize on the overcloud-full image. To allow that, you need to pass the overcloud_customize_script var, that needs to point to an script living on your filesystem. That script will be copied to working directory, and applied on the overcloud. The script can be in Jinja template format, so you can benefit from ansible var substitutions.

## Consuming external images¶

In the usual workflow, tripleo-quickstart relies on the overcloud and agent images that are shipped in the undercloud. But for certain types of tests, it is useful to provide your own images. To achieve that, set the use_external_images to True. This will cause to inject all the images listed in the inject_images list into the undercloud, so the system can use it. Please note that you also need to define all the images you want to fetch, using the images setting. You will need to define the name of the image, the url where to get it, and the image type (qcow2, tar). As a reference, please look at the config

## Consuming external/custom vmlinuz and initrd for undercloud¶

By default, the kernel executable and initial rootfs for an undercloud VM are extracted from the overcloud image. In order to switch to custom undercloud_custom_initrd and undercloud_custom_vmlinuz images, set the undercloud_use_custom_boot_images to True.

## Consuming OpenStack hosted VM instances as overcloud/undercloud nodes¶

Note

This is an experimental advanced feature for custom dev/QE setups, like pre-provisioned (deployed-server) or a split-stack. It has yet been tested by TripleO CI jobs. Eventually, we’ll add a CI job and switch some of the OVB jobs in order to start testing this mode as well.

Nova servers pre-provisioned on openstack clouds may be consumed by quickstart ansible roles by specifying inventory: openstack.

You should also provide a valid admin user name, like ‘centos’ or ‘heat-admin’, and paths to ssh keys in the overcloud_user, overcloud_key, undercloud_user, undercloud_key variables.

Note

The ssh_user should be refering to the same value as the undercloud_user.

To identify and filter Nova servers by a cluster ID, define the clusterid variable. Note that the Nova servers need to have the metadata.clusterid defined for this to work as expected.

Then set openstack_private_network_name to the private network name, over which ansible will be connecting the inventory nodes, via the undercloud/bastion node’s floating IP.

Finally, the host openstack cloud access URL and credentials need to be configured. Here is an example playbook to generate ansible inventory file and ssh config given an access URL and credentials:

---
- name: Generate static inventory for openstack provider by shade
hosts: localhost
any_errors_fatal: true
gather_facts: true
become: false
vars:
undercloud_user: centos
ssh_user: centos
non_root_user: centos
overcloud_user: centos
inventory: openstack
os_tenant_name: fuser
os_auth_url: 'http://cool_cloud.lc:5000/v2.0'
cloud_name: cool_cloud
clusterid: tripleo_dev
openstack_private_network_name: my_private_net
overcloud_key: '{{ working_dir }}/fuser.pem'
undercloud_key: '{{ working_dir }}/fuser.pem'
roles:
- tripleo-inventory


Next, you may want to check if the nodes are ready to proceed with the overcloud deployment steps:

ansible --ssh-common-args='-F $HOME/.quickstart/ssh.config.ansible' \ -i$HOME/.quickstart/hosts all -m ping