Debian 11 Bullseye
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OpenStack Victoria : Configure Horizon2021/08/31

 
Configure OpenStack Dashboard Service (Horizon).
It's possible to control OpenStack on Web GUI to set Dashboard.
[1] Install Horizon.
root@dlp ~(keystone)#
apt -y install openstack-dashboard
[2] Configure Horizon.
root@dlp ~(keystone)#
vi /etc/openstack-dashboard/local_settings.py
# line 40 : specify allowed compute hosts to connect to horizon

ALLOWED_HOSTS = [
'dlp.srv.world', 'localhost',
]
# line 107 : add

SESSION_ENGINE = "django.contrib.sessions.backends.cache"
# line 120 : set Openstack Host
# line 121 : comment out and add a line to specify URL of Keystone Host

OPENSTACK_HOST = "
10.0.0.30
"
#
OPENSTACK_KEYSTONE_URL = "http://%s/identity/v3" % OPENSTACK_HOST
OPENSTACK_KEYSTONE_URL = "http://10.0.0.30:5000/v3"
# line 125 : set your timezone

TIME_ZONE = "
Asia/Tokyo
"
root@dlp ~(keystone)#
vi /etc/openstack-dashboard/local_settings.d/_0006_debian_cache.py
# change to your Memcache server

CACHES = {
  'default' : {
    #'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'
    'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
    'LOCATION': '10.0.0.30:11211',
  }
}

root@dlp ~(keystone)#
vi /etc/apache2/conf-available/openstack-dashboard.conf
# create new

WSGIScriptAlias / /usr/share/openstack-dashboard/wsgi.py process-group=horizon
WSGIDaemonProcess horizon user=horizon group=horizon processes=3 threads=10 display-name=%{GROUP}
WSGIProcessGroup horizon
WSGIApplicationGroup %{GLOBAL}

Alias /static /var/lib/openstack-dashboard/static/
Alias /horizon/static /var/lib/openstack-dashboard/static/

<Directory /usr/share/openstack-dashboard>
  Require all granted
</Directory>

<Directory /var/lib/openstack-dashboard/static>
  Require all granted
</Directory>

root@dlp ~(keystone)#
a2enconf openstack-dashboard

root@dlp ~(keystone)#
mv /etc/openstack-dashboard/policy /etc/openstack-dashboard/policy.org

root@dlp ~(keystone)#
chown -R horizon /var/lib/openstack-dashboard/secret-key

root@dlp ~(keystone)#
systemctl restart apache2
[3]
Access to the URL below with any web browser.
⇒ http://(Dashboard server's hostname or IP address)/
After accessing, following screen is displayed, then you can login with a user in Keystone.
It's possible to use all features if you login with [admin] user when you set it on keystone bootstrap.
If you login with a common user, it's possible to use or manage own instances.
[4] After login successfully, following screen is displayed (as a common user). You can control Openstack on this Dashboard.
[5] To confirm own instances, Click [Instances] on the left pane, then they are diplayed on the right.
If you did not configure Nova Policy like [2] above, common users can access to here only.
If you configured Nova Policy like [2] above, it's possible to confirm details of instance to click an instance name.
[6] The details of an instance is displayed. To Click [Console] tab, it's possible to access to instance console.
[7] On instance console, it's possible to operate instance on Dashboard web.
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