Horizon Install packages apt install openstack-dashboard -y Modify config file /etc/openstack-dashboard/local_settings.py: OPENSTACK_HOST = "controller" ALLOWED_HOSTS = ['*'] # ALLOWED_HOSTS - ['host1', 'host1'] SESSION_ENGINE = 'django.contrib.sessions.backends.cache' CACHES = { 'default': { 'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache', 'LOCATION': 'controller:11211', } } OPENSTACK_KEYSTONE_URL = "http://%s:5000/identity/v3" % OPENSTACK_HOST # IF ONLY PROVIDER NEWORKS OPENSTACK_NEUTRON_NETWORK = { ... 'enable_router': False, 'enable_quotas': False, 'enable_ipv6': False, 'enable_distributed_router': False, 'enable_ha_router': False, 'enable_fip_topology_check': False, } TIME_ZONE = "TIME_ZONE" Modify file /etc/apache2/conf-available/openstack-dashboard.conf if line is not present: WSGIApplicationGroup %{GLOBAL} Finalize install: systemctl reload apache2