OpenStack Operations

Perform various common OpenStack operations by calling this role with an action and appropriate variables.

[WIP] Restart Services

Restarting OpenStack service is complex. This role aims to intelligently evaluate the environment and determine how a service is running, what components constitute that service, and restart those components appropriately. This allows the operator to think in terms of the service that needs restarting rather than having to remember all the details required to restart that service.

Fetch Logs

To fetch logs with this role, use the fetch_logs.yml tasks file. By default, every log file in /var/log matching the *.log pattern will be fetched from the remote and put into a folder adjacent to the playbook named for each host, preserving the directory structure as found on the remote host.

See defaults/main.yml for the dictionary of options to control logs that are fetched.

Cleanup Docker

WARNING: This will delete images, containers, and volumes from the target system(s).

To perform the most common cleanup tasks -- delete dangling images and volumes and delete exited or dead containers -- use the cleanup_docker.yml tasks file. This role includes a docker_facts module for enumerating images, volumes, and containers. The filtered lists (one each for images, containers, and volumes) returned by this module is used to determine which items to remove. The module accepts a list of k=v filter arguments that will be passed to the -f option of Docker. Specifying multiple filters creates an and match, so all filters must match.

See Docker guides for images, containers, and volumes for filter options.

Requirements

• ansible >= 2.4
• python >= 2.6
• docker-py >= 1.7.0
• Docker API >= 1.20

Role Variables

Variables used for cleaning up Docker

Name	Default Value	Description
operations_image_filters	['dangling=true']	List of image filters.
operations_volume_filters	['dangling=true']	List of volume filters.
operations_container_filters	['status=exited', 'status=dead']	List of container filters.

Variables for fetching logs

Name	Default Value	Description
operations_log_destination	{{ playbook_dir }}	Path where logs will be stored when fetched from remote systems.

Variables for restarting services

Name	Default Value	Description
operations_service_names	[]	List of services to restart on target systems.

Dependencies

None

Example Playbooks

Restart Services

- hosts: all
  tasks:
    - name: Restart a service
      import_role:
        name: openstack-operations
        tasks_from: restart_service.yml
      vars:
        operations_service_names:
          - docker
          - keystone
          - mariadb

Cleanup Docker

- name: Cleanup dangling and dead images, containers, and volumes
  hosts: all
  tasks:
    - name: Cleanup unused Docker images, containers, and volumes
      import_role:
        name: openstack-operations
        tasks_from: cleanup_docker.yml

- name: Use custom filters for cleaning
  hosts: all
  tasks:
    - name: Cleanup unused Docker images, containers, and volumes
      import_role:
        name: openstack-operations
        tasks_from: cleanup_docker.yml
      vars:
        operations_image_filters:
          - before=image1
        operations_volume_filters:
          - label=my_volume
        operations_container_filters:
          - name=keystone

Fetch Logs

- hosts: all
  tasks:
    - name: Fetch logs
      import_role:
        name: openstack-operations
        tasks_from: fetch_logs.yml

License

Apache 2.0