OpenStack Dalmatian : Configure Horizon2024/10/10

Configure OpenStack Dashboard Service (Horizon).
It's possible to control OpenStack on Web GUI to set Dashboard.

This example is based on the environment like follows.

        eth0|10.0.0.30 
+-----------+-----------+
|   [ dlp.srv.world ]   |
|     (Control Node)    |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  Nginx     |
|  Keystone   httpd     |
|  Glance     Nova API  |
|  Nova Compute         |
|    Neutron Server     |
|    Open vSwitch       |
|  OVN Metadata Agent   |
|    OVN-Controller     |
|       Horizon         |
+-----------------------+

[1]	Install Horizon.

# install from Dalmatian, EPEL, CRB

[root@dlp ~(keystone)]#

dnf --enablerepo=centos-openstack-dalmatian,epel,crb -y install openstack-dashboard

[2]	Configure Horizon.

[root@dlp ~(keystone)]#

vi /etc/openstack-dashboard/local_settings

# line 39 : set Hosts you allow to access

# to specify wildcard ['*'], allow all

ALLOWED_HOSTS = ['

', 'localhost' ]

# line 94-99 : uncomment and specify Memcache server Host

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': 'dlp.srv.world:11211',
    },
}

# line 105 : add

SESSION_ENGINE = "django.contrib.sessions.backends.cache"

# line 118 : set Openstack Host

# line 119 : comment out and add a line to specify URL of Keystone Host

OPENSTACK_HOST = "

dlp.srv.world

OPENSTACK_KEYSTONE_URL = "http://%s:5000/v3" % OPENSTACK_HOST

OPENSTACK_KEYSTONE_URL = "https://dlp.srv.world:5000"

# line 123 : set your timezone

TIME_ZONE = "

Asia/Tokyo

# add to last line

WEBROOT = '/dashboard/'
LOGIN_URL = '/dashboard/auth/login/'
LOGOUT_URL = '/dashboard/auth/logout/'
LOGIN_REDIRECT_URL = '/dashboard/'
OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = True
OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = 'Default'
# set [True] below if you are using self signed certificate
OPENSTACK_SSL_NO_VERIFY = False

[root@dlp ~(keystone)]#

vi /etc/httpd/conf.d/openstack-dashboard.conf

# line 4 : add

WSGIDaemonProcess dashboard
WSGIProcessGroup dashboard
WSGISocketPrefix run/wsgi

WSGIApplicationGroup %{GLOBAL}

# line 5 : change

WSGIScriptAlias /dashboard

/usr/share/openstack-dashboard/openstack_dashboard/wsgi.py

# line 8 : change

<Directory

/usr/share/openstack-dashboard/openstack_dashboard

[root@www ~]#

vi /etc/httpd/conf.d/ssl.conf

# line 43 : uncomment

DocumentRoot "/var/www/html"

# line 44 : uncomment and specify your hostname

ServerName

dlp.srv.world:443

# line 85 : change to specify your certificate

SSLCertificateFile

/etc/letsencrypt/live/dlp.srv.world/cert.pem

# line 93 : change to specify your certificate

SSLCertificateKeyFile

/etc/letsencrypt/live/dlp.srv.world/privkey.pem

# line 102 : uncomment and change to specify your certificate

SSLCertificateChainFile

/etc/letsencrypt/live/dlp.srv.world/chain.pem

[root@dlp ~(keystone)]#

systemctl restart httpd openstack-nova-api

[3]	If SELinux is enabled, change policy.

[root@dlp ~(keystone)]#

setsebool -P httpd_can_network_connect on

[4]	If Firewalld is running, allow services.

[root@dlp ~(keystone)]#

firewall-cmd --add-service={http,https}

success
[root@dlp ~(keystone)]#

firewall-cmd --runtime-to-permanent

success

[5]

Access to the URL below with any web browser.
⇒ https://(your servers hostname or IP address)/dashboard/

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.

[6]	After login successfully, following screen is displayed (with common user). You can control Openstack on this Dashboard.

[7]	To confirm own instances, Click [Instances] on the left pane, then they are displayed on the right pane. It's possible to confirm details of instance to click an instance name.

[8]	The details of an instance is displayed. To Click [Console] tab, it's possible to access to instance console.

[9]	On instance console, it's possible to operate instance on Dashboard web.

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