Horizon ¶

Disable “Consistency Groups” and “Consistency Group Snapshots” dashboards ¶

The two dashboards Consistency Groups and Consistency Group Snapshots are unfortunately always activated in Horizon and there is no configuration parameter to deactivate them. Therefore only the deactivation by manual removal of files within the Horizon containers works at the moment.

$ docker exec -it horizon bash
(horizon)[root@20-10 /]# find /var/lib/kolla \
  -name '_1340_project_consistency_groups_panel.py*' \
  -exec rm -f {} \;
(horizon)[root@20-10 /]# find /var/lib/kolla \
  -name '_1350_project_cg_snapshots_panel.py*' \
  -exec rm -f {} \;

$ docker restart horizon

Horizon webinterface broken ¶

Description¶

Solution¶

You have to cleanup and restart all horizon containers.

Up to Queens release:

$ docker exec -it horizon rm /var/lib/kolla/.local_settings.md5sum.txt && docker restart horizon

As of Rocky release

$ docker exec -it horizon rm /var/lib/kolla/.settings.md5sum.txt && docker restart horizon

Large Horizon table for django_session ¶

table django_session size in database horizon is large

$ ls -lah /var/lib/docker/volumes/mariadb/_data/horizon/
total 3.5G
...
-rw-rw----  1 42434 42434 1.6K Sep 10 12:07 django_session.frm
-rw-rw----  1 42434 42434 3.5G Dec  5 14:53 django_session.ibd
...

cleanup the sessions in horizon container

$ docker exec -it horizon manage.py clearsessions

optimize the table size

$ docker exec -it mariadb mysqlcheck -u root -p --optimize --skip-write-binlog horizon django_session
Enter password:
horizon.django_session
note     : Table does not support optimize, doing recreate + analyze instead
status   : OK

table django_session size in database horizon

$ sudo ls -lah /var/lib/docker/volumes/mariadb/_data/horizon/
...
-rw-rw----  1 42434 42434 1.6K Dec  5 15:02 django_session.frm
-rw-rw----  1 42434 42434 9.0M Dec  5 15:04 django_session.ibd
...

Customize horizon theme ¶

From the Upstream Documentation: https://docs.openstack.org/kolla-ansible/latest/reference/shared-services/horizon-guide.html#extending-the-default-local-settings-options

Prepare overlay files

as an example where theme files should placed.

$ tree -L 2  /opt/configuration/environments/kolla/files/overlays/horizon/

  ├── custom_local_settings
  └── themes
       └── osism

to enable it in the kolla/configuration.yml

# horizon

horizon_custom_themes:
    - name: osism
      label: CustomTheme

choose theme as default in kolla/files/overlays/horizon/custom_local_settings

AVAILABLE_THEMES = [
       ('OSISM', 'osism,', '/etc/openstack-dashboard/themes/osism'),
]

DEFAULT_THEME = 'osism'

Changing the Brand Link https://docs.openstack.org/horizon/zed/configuration/customizing.html#changing-the-brand-link

Customize Footer: https://docs.openstack.org/horizon/latest/configuration/customizing.html#customizing-the-footer

  {% extends "base.html" %}

  {% block footer %}
     <p>My custom footer</p>
  {% endblock %}


auth/login.html:

{% extends "auth/login.html" %}

{% block footer %}
     <p>customize login footer</p>
{% endblock %}

auth/_login_form.html:

{% extends "auth/_login_form.html" %}

{% block login_footer %}
{% comment %}
   Message of to day login button.
{% endcomment %}
{{ block.super }}
        <p>customize login form footer</p>
{% endblock %}

Horizon¶

Disable “Consistency Groups” and “Consistency Group Snapshots” dashboards¶

Horizon webinterface broken¶