[RFE][tripleo-validations] tripleo-ansible-inventory can only group computes and controllers

[John Fulton]

The tripleo-ansible-inventory in the tripleo-validations repository is only able to support the Ansible host groups control or compute [1]. Would it benefit the tripleo-validations project if it could also do the following?

1. It could create an Ansible host group for any role that a user could compose?
2. It could determine which nodes fit a role based on services whose name matches a pattern?

If so I could work on a patch to tripleo-ansible-inventory to make it do this and track that effort under this bug. However, I want to check with the tripleo-validations community first to be sure it would be a useful patch.

One place it would be useful outside of tripleo-validations is for the Ansible inventory portion of this spec:

 https://specs.openstack.org/openstack/tripleo-specs/specs/pike/tripleo-ceph-ansible-integration.html

I want to use the tripleo-validations tripleo-ansible-inventory so that ceph-ansible can configure different Ceph services on any overcloud node which is running a Ceph service (including whatever role or hostgroup a user might have composed). This process would be similar to running:

 grep -i ceph /usr/share/openstack-tripleo-heat-templates/roles_data.yaml

and then setting up Ansible inventory aliases for mons, osds, and other host groups that ceph-ansible uses [2].

Feel free to close this RFE if it wouldn't be of use or assign it to me and I will follow up with you.

[1] https://github.com/openstack/tripleo-validations/blob/master/scripts/tripleo-ansible-inventory#L150-L165
[2] https://github.com/ceph/ceph-ansible/blob/master/site.yml.sample

[John Fulton (jfulton-org)]

I see a patch related to this RFE already in the works at https://review.openstack.org/#/c/450233/

[John Fulton (jfulton-org)]

I see the second part of this bug:

> 2. It could determine which nodes fit a role based on services whose name matches a pattern?

is partially addressed in the following:

 https://review.openstack.org/#/c/457972/

perhaps pattern matching isn't necessary if all subsets of nodes are created per service.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/450233
Committed: https://git.openstack.org/cgit/openstack/tripleo-validations/commit/?id=9461adfa244793cba91f87fcee25a6887a9b7368
Submitter: Jenkins
Branch: master

commit 9461adfa244793cba91f87fcee25a6887a9b7368
Author: Florian Fuchs <email address hidden>
Date: Mon Mar 27 15:47:36 2017 +0200

    Show all roles in inventory

    This patch updates the tripleo-ansible-inventory to show all roles in
    the host list, not just compute and controller nodes.

    The retrieval of IPs and stack outputs is slightly refactored: Instead of
    retrieving them from Nova, the host IPs are now read from the stacks new
    RoleNetIpMap output. The stack outputs are fetched from heat via a new
    `StackOutputs` class that ensures outputs are only fetched when needed.

    Closes-Bug: #1685544
    Closes-Bug: #1689789
    Change-Id: Ic8a19f15dd45b383a3f3d403653e3eaef2c1865b

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-validations 7.1.0 release.