openstack-ansible/playbooks/roles/ceph_client/tasks/ceph_auth.yml

---
# Copyright 2015, Serge van Ginderachter <serge@vanginderachter.be>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.



## Ceph client keyrings

#TODO: also be able to create users, keys and pools on ceph
- name: Retrieve keyrings for openstack clients from ceph cluster
  # the first get makes sure the client exists, so the second only runs when it
  # exists, the trick is the different output of both, the second has the right
  # output to put in a keyring; ceph admin should have already created the user
  shell: ceph auth get client.{{ item.1 }} >/dev/null && ceph auth get-or-create client.{{ item.1 }}
  with_subelements:
  - ceph_components
  - client
  when: >
    inventory_hostname in groups[item.0.component] and
      (item.0.component != 'cinder_backup' or
        ((cinder_service_backup_program_enabled is defined and cinder_service_backup_program_enabled | bool) and
          (cinder_service_backup_driver is defined and cinder_service_backup_driver == 'cinder.backup.drivers.ceph')))    
  always_run: true
  changed_when: false
  delegate_to: '{{ ceph_mon_host }}'
  register: ceph_client_keyrings
  until: ceph_client_keyrings|success
  tags:
  - ceph-auth-client-keyrings

- name: Create cephkeys_access_group group
  group:
    name: "{{ cephkeys_access_group }}"

- name: Add OpenStack service to cephkeys_access_group group
  user:
    name: "{{ openstack_service_system_user }}"
    groups: "{{ cephkeys_access_group }}"
    append: yes
  notify:
  - Restart os services

- name: Provision ceph client keyrings
  # TODO: do we really need a template for this? what's the added value compare to
  # ceph get-or-create ... ... -o file?
  template:
    src:      ceph.client.keyring.j2
    dest:     /etc/ceph/ceph.client.{{ item.item.1 }}.keyring
    backup:   true
    owner:    root
    # TODO
    group:    "{{ cephkeys_access_group }}"
    # ideally the permission will be: 0600 and the owner/group will be either
    # glance , nova or cinder. For keys that require access by different users
    # (the cinder one) we should probably create a group 'cephkeys' and add
    # nova/cinder to it.
    # If I'm correct, the use case for multiple users is on the computre nodes,
    # access needed by users libvirt-qemu and nova
    mode:     0640
  with_items:   ceph_client_keyrings.results
  when: not item|skipped and inventory_hostname in groups[item.item.0.component]
  notify:
  - Restart os services
  tags:
  - ceph-auth-client-keyrings

## Ceph nova client libvirt secret

- name: Retrieve nova secret from cephcluster
  command: ceph auth get-key client.{{ nova_ceph_client }}
  when: inventory_hostname in groups.nova_compute
  register: ceph_client_nova_secret
  always_run:   true
  changed_when: false
  failed_when:  false
  delegate_to: '{{ ceph_mon_host }}'
  register: ceph_nova_secret
  tags:
  - ceph-auth-nova-libvirt-secret

- name: Check if nova secret is defined in libvirt
  shell: virsh secret-list|grep {{ nova_ceph_client_uuid }}
  when: inventory_hostname in groups.nova_compute
  always_run:   true
  failed_when:  false
  changed_when: false
  register: libvirt_nova_defined
  tags:
  - ceph-auth-nova-libvirt-secret

- name: Provide xml file to create the secret
  template:
    src: secret.xml.j2
    dest: /tmp/nova-secret.xml
  when: inventory_hostname in groups.nova_compute and libvirt_nova_defined.rc is defined and libvirt_nova_defined.rc != 0
  tags:
  - ceph-auth-nova-libvirt-secret

- name: Define libvirt nova secret
  command: virsh secret-define --file /tmp/nova-secret.xml
  when: inventory_hostname in groups.nova_compute and libvirt_nova_defined.rc is defined and libvirt_nova_defined.rc != 0
  notify:
  - Restart os services
  tags:
  - ceph-auth-nova-libvirt-secret

- name: Check if nova secret value is set in libvirt
  command: virsh secret-get-value {{ nova_ceph_client_uuid }}
  when: inventory_hostname in groups.nova_compute
  always_run:   true
  failed_when:  false
  changed_when: false
  register: libvirt_nova_set
  tags:
  - ceph-auth-nova-libvirt-secret

- name: Set nova secret value in libvirt
  shell: virsh secret-set-value --secret {{ nova_ceph_client_uuid }} --base64 {{ ceph_nova_secret.stdout }}
  when: >
        inventory_hostname in groups.nova_compute and libvirt_nova_set.rc is defined
        and
        (libvirt_nova_set.rc != 0
        or
        (libvirt_nova_set.rc == 0 and libvirt_nova_set.stdout != ceph_nova_secret.stdout)
        )        
  notify:
  - Restart os services
  tags:
  - ceph-auth-nova-libvirt-secret