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Horizon

Problems uploading machine images larger than 1 GiB​

By default, the LimitRequestBody is set to 1073741824 (1 GiB). This is a security feature (CVE-2022-29404) and not a bug. Further details in the A new default for the LimitRequestBody directive in httpd configuration article in the RedHat knowledgebase.

This limit can be increased via the parameter horizon_httpd_limitrequestbody.

environments/kolla/configuration.yml
horizon_httpd_limitrequestbody: 2147483648  # 2 GiB

Make clouds.yml file downloadable as an alternative to the RC file​

By default, only the openrc file is offered for download in Horizon. It makes sense to also add the clouds.yaml as a download. To do this, the menu is customised. The change can be deployed with osism apply -a reconfigure horizon.

environments/kolla/files/overlays/horizon/_9999-custom-settings.py
SHOW_KEYSTONE_V2_RC = False
USER_MENU_LINKS = [
  {'name': _('OpenStack clouds.yml File'),
   'icon_classes': ['fa-download', ],
   'url': 'horizon:project:api_access:clouds.yaml',
   'external': False,
   },
  {'name': _('OpenStack RC File v3'),
   'icon_classes': ['fa-download', ],
   'url': 'horizon:project:api_access:openrc',
   'external': False,
   }
]

Custom themes​

  1. Place the files and directories of the custom theme in environments/kolla/files/overlays/horizon/themes/custom_theme. Examples of custom themes can be found in the osism/openstack-themes repository.

  2. Add the custom theme to the horizon_custom_themes dictionary. Use the name of the directory in environments/kolla/files/overlays/horizon/themes as name.

    environments/kolla/configuration.yml
    horizon_custom_themes:
      - name: custom_theme
        label: CustomTheme

  3. If the custom theme should be the default then add the DEFAULT_THEME parameter.

    environments/kolla/files/overlays/horizon/_9999-custom-settings.py
    DEFAULT_THEME = 'custom_theme'