Shulou(Shulou.com)06/02 Report--

The project name of the OpenStack dashboard Dashboard service is Horizon, and the only service it needs is the identity service keystone, and the development language is python's web framework Django.

System requirements

The following requirements are required to install the Train version of Horizon:

1. Language environment

Python 2.7,3.6 or 3.7

Django 1.11,2.0 and 2.2

Django 2.0 and 2.2 support is in the experimental stage in the Train version.

The Ussuri distribution (the next release after the Train release) will use Django 2.2 as the main Django version. Django 2.0 support will be removed.

2. Accessible keystone endpoint

3. Other services are optional.

Starting with the Stein version, Horizon supports the following services:

Cinder: block Stora

Glance: mirror management

Neutron: network

Nova: calculation

Swift: object Stora

If you have configured the endpoint for the service keystone, Horizon will detect it and automatically enable its support.

Horizon also supports many other OpenStack services through plug-ins.

Install the dashboard service horizon on the compute node (C1)

Because apache is required for horizon to run, it is installed on the compute node in order not to affect the apache used by other services such as keystone on the control node. Confirm that the previously installed service starts properly before installation.

Install the package

Yum install openstack-dashboard-y

Edit configuration file

Must be edited directly with vim, and cannot be emptied before copying and pasting.

Vim / etc/openstack-dashboard/local_settings

Line 118, configure the dashboard to use OpenStack services on the controller node:

OPENSTACK_HOST = "ct"

Line 39 to allow host access to the dashboard:

ALLOWED_HOSTS = ['*] # ['*] refers to the acceptance of all hosts.

100 lines to configure the memcached session storage service:

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

CACHES = {

'default': {

'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache'

'LOCATION': 'ct:11211'

}

}

Line 126, enable authentication service API version 3:

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

Line 127, join, enable support for multiple domains:

OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = True

128 lines. Join the configuration API version:

OPENSTACK_API_VERSIONS = {

"identity": 3

"image": 2

"volume": 3

}

Line 133, join, configure Default for the default domain of the user created through the dashboard:

OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = "Default"

Configure the default role of user for users created through the dashboard:

OPENSTACK_KEYSTONE_DEFAULT_ROLE = "user"

Line 139 selects a layer 2 network, and to disable support for layer 3 network services:

OPENSTACK_NEUTRON_NETWORK = {

'enable_auto_allocated_network': False

'enable_distributed_router': False

'enable_ha_router': False

'enable_ipv6': False

'enable_rbac_policy': False

'enable_router': False

'enable_quotas': False

'enable_lb': False

'enable_fip_topology_check': False

'default_dns_nameservers': []

'supported_provider_types': ['*]

'segmentation_id_range': {}

'extra_provider_types': {}

'supported_vnic_types': ['*]

'physical_networks': []

}

False must have its initials capitalized

Configure the time zone (optional):

TIME_ZONE = "Asia/Shanghai"

The following two steps are not found in the official documentation, but need to be performed, otherwise the dashboard will not open or display incorrectly

Rebuild the dashboard configuration file for apache

Cd / usr/share/openstack-dashboard

Python manage.py make_web_conf-- apache > / etc/httpd/conf.d/openstack-dashboard.conf

Establish a soft link to the policy file (policy.json), otherwise login to dashboard will result in permission errors and confused display

Ln-s / etc/openstack-dashboard / usr/share/openstack-dashboard/openstack_dashboard/conf

Restart the apache service on the compute node (C1)

Systemctl enable httpd.service

Systemctl restart httpd.service

Since the operating mechanism of dashboard is to delete all files under the website and then copy them again, it will take some time to restart httpd.

Restart the memcache service on the control node (ct)

Systemctl restart memcached.service

Verification operation

On other computers, use a Web browser to access the dashboard at http://192.168.10.42 (note, unlike previous versions, no dashboard)

Log in using admin with the password ADMIN_PASS

Change the next theme in the upper right corner

You can see the cirros image we uploaded during the installation of glance

Can manage projects, users, groups, and roles

Click on all the modules to see if there is any wrong message.

At this point, horizon is installed.

After the domain name resolution, you can also use the domain name to access dashboard.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.