ansible-role-tripleo-modify-image 1.2.1

Modify Image

The following playbook will produce a modified image with the tag :latest-modified-<timestamp> based on the Dockerfile in the custom directory /path/to/example_modify_dir.

- hosts: localhost
  tasks:
  - name: include ansible-role-tripleo-modify-image
    import_role:
      name: ansible-role-tripleo-modify-image
      tasks_from: modify_image.yml
    vars:
      source_image: docker.io/tripleomaster/centos-binary-nova-api:latest
      modify_dir_path: /path/to/example_modify_dir
      container_build_tool: docker # or buildah

The directory example_modify_dir contains the Dockerfile which will perform the modification, for example:

# This will be replaced in the file Dockerfile.modified
FROM centos-binary-nova-api

# switch to root to install packages
USER root

# install packages
RUN curl "https://bootstrap.pypa.io/get-pip.py" -o "/tmp/get-pip.py"
RUN python /tmp/get-pip.py

# switch the container back to the default user
USER nova

Yum update

The following playbook will produce a modified image with the tag :latest-updated which will do a yum update using the host’s /etc/yum.repos.d. Only file repositories will be used (with baseurl=file://…). In this playbook the tasks_from is set as a variable instead of an import_role parameter.

- hosts: localhost
  tasks:
  - name: include ansible-role-tripleo-modify-image
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: yum_update.yml
      source_image: docker.io/tripleomaster/centos-binary-nova-api:latest
      yum_repos_dir_path: /etc/yum.repos.d
      modified_append_tag: updated
      container_build_tool: buildah # or docker
      yum_cache: /tmp/containers-updater/yum_cache
      rpms_path: /home/stack/rpms

- hosts: localhost
  tasks:
  - name: include ansible-role-tripleo-modify-image
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: yum_update.yml
      source_image: docker.io/tripleomaster/centos-binary-nova-api:latest
      modified_append_tag: updated
      container_build_tool: docker # or buildah
      rpms_path: /home/stack/rpms/

Note, if you have a locally installed gating repo, you can add update_repo: gating-repo. This may be the case for the consequent in-place deployments, like those performed with the CI reproducer script.

Yum install

The following playbook will produce a modified image with the tag :latest-updated which will do a yum install of the requested packages using the host’s /etc/yum.repos.d. In this playbook the tasks_from is set as a variable instead of an import_role parameter.

- hosts: localhost
  tasks:
  - name: include ansible-role-tripleo-modify-image
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: yum_install.yml
      source_image: docker.io/tripleomaster/centos-binary-nova-api:latest
      yum_repos_dir_path: /etc/yum.repos.d
      yum_packages: ['foobar-nova-plugin', 'fizzbuzz-nova-plugin']
      container_build_tool: docker # or buildah

RPM install

The following playbook will produce a modified image with RPMs from the specified rpms_path on the local filesystem installed as a new layer for the container. The new container tag is appened with the ‘-hotfix’ suffix. Useful for creating adhoc hotfix containers with local RPMs with no network connectivity.

- hosts: localhost
  tasks:
  - name: include ansible-role-tripleo-modify-image
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: rpm_install.yml
      source_image: docker.io/tripleomaster/centos-binary-nova-api:latest
      rpms_path: /home/stack/rpms
      modified_append_tag: -hotfix

Dev install

The following playbook will produce a modified image with Python source code installed via pip. To minimize dependencies within the container we generate the sdist locally and then copy it into the resulting container image as an sdist tarball to run pip install locally.

It can be used to pull a review from OpenDev Gerrit:

- hosts: localhost
  connection: local
  tasks:
  - name: dev install heat-api
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: dev_install.yml
      source_image: docker.io/tripleomaster/centos-binary-heat-api:current-tripleo
      refspecs:
        -
          project: heat
          refspec: refs/changes/12/1234/3
      modified_append_tag: -devel

or it can be used to build an image from a local Python directory:

- hosts: localhost
  connection: local
  tasks:
  - name: dev install heat-api
    import_role:
      name: ansible-role-tripleo-modify-image
    vars:
      tasks_from: dev_install.yml
      source_image: docker.io/tripleomaster/centos-binary-heat-api:current-tripleo
      modified_append_tag: -devel
      python_dir:
        - /home/joe/git/openstack/heat