bifrost/playbooks/roles/bifrost-create-dib-image

bifrost-create-dib-image

This role uses diskimage-builder to create a bootable disk image or ramdisk.

Requirements

This role requires:

• Ansible 2.0

Role Variables

The role can use the disk-image-create or ramdisk-image-create scripts. Which script is used is controlled by the build_ramdisk variable. The default is false.

build_ramdisk: false

The dib_env_vars are settings for the diskimage-builder environment variables which allow settings to be passed to elements that are being utilized to build a disk image. More information on diskimage-builder can be found at: https://opendev.org/openstack/diskimage-builder/

dib_env_vars: DIB_CLOUD_INIT_DATASOURCES: "ConfigDrive" ELEMENTS_PATH: "/opt/stack/diskimage-builder/elements"

The final destination of the image is specified by dib_imagename.

dib_imagename: "/path/to/image.qcow2"

dib_os_element controls which OS will be used to build the image.

dib_os_element: "ubuntu"

dib_elements is a space-separated list of elements that will be added to the resulting disk image.

dib_elements: "vm enable-serial-console"

dib_init_element is used to set the init tool that will be used to provision the installed OS. This is an argument that is passed to diskimage-builder which generates a deployable image of the OS defined in 'dib_os_element'. By default we use 'simple-init'. You can modify this to use other init tools, for example: cloud-init (see below)

dib_init_element: simple-init

dib_packages is a comma-separated list of packages to be installed on the resulting disk image.

dib_packages: "traceroute,python-devel"

dib_os_release can be utilized to set the DIB_RELEASE environment variable for semi-dynamic disk image creation by a user or the test script. By default, it is not set, but an example if dib_os_element is set to debian, then a user could choose the bookworm release.

dib_os_release: bookworm

All the other command-line options to disk-image-create or ramdisk-image-create can be used by the role. The following is a list of the command-line options, their corresponding variables, and the type of the value to supply. Please refer to the help text for disk-image-create for further information.

| Option | Variable name | Value |

| -x | dib_trace | boolean | | -u | dib_uncompressed | boolean | | -c | dib_clearenv | boolean | | --no-tmpfs | dib_notmpfs | boolean | | --offline | dib_offline | boolean | | -n | dib_skipbase | boolean | | -a | dib_arch | arch | | -o | dib_imagename | /path/to/image | | -t | dib_imagetype | image type | | --image-size | dib_imagesize | size in GB | | --image-cache | dib_imagecache | /path/to/cache | | --max-online-resize | dib_maxresize | size in blocks | | --min-tmpfs | dib_mintmpfs | size in GB | | --mkfs-options | dib_mkfsopts | mkfs flags | | --qemu-img-options | dib_qemuopts | comma-separated list | | --root-label | dib_rootlabel | label | | --ramdisk-element | dib_rdelement | element name | | -t | dib_installtype | source or package |

Using cloud-init

By default, bifrost uses the 'simple-init' dib element, which will disable cloud-init. If you have cloud-init enabled in your image(Ubuntu/Fedora) and you wish to allow configdrive to work with it, you set 'dib_init_element' to 'cloud-init-datasources'.

Example Playbook

• hosts: localhost connection: local name: "Build DIB image" become: yes gather_facts: yes roles:
  • role: bifrost-create-dib-image

License

Copyright (c) 2015 Hewlett-Packard Development Company, L.P.

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.

Author Information

Ironic Developers