前言：

仪表盘是一般项目的标配，有了仪表盘可以降低运维工作，并且很多的管理工作是可以可视化的。本节计划在控制节点安装openstack官网的仪表盘项目

openstack由于是一个开源的社区版本云计算项目，因此，它的web仪表盘是非常多得：

OpenStack Releases: Zed

一，

安装dashboard WEB控制台

有两种安装方式一种是yum安装方式，一种是源码安装方式，在官网文档里都有所介绍，本文采用最简单的yum安装方式

官网文档：OpenStack Docs: Install and configure for Red Hat Enterprise Linux and CentOS

###注，dashboard是安装在控制节点（192.168.123.130）的，此项目是Django项目，比较占用内存，因此，内存至少需要8G

1，Install the packages:

yum install openstack-dashboard -y

2，

修改配置文件/etc/openstack-dashboard/local_settings

Configure the dashboard to use OpenStack services on the controller node:
```
OPENSTACK_HOST = "openstack1"
#可以使用IP
```

Allow your hosts to access the dashboard:
```
ALLOWED_HOSTS = ['*',]
```

#ALLOWED_HOSTS = ['openstack1','openstack2',] 这样也是可以的

Configure the memcached session storage service:

SESSION_ENGINE = 'django.contrib.sessions.backends.cache'
#这一行新增

CACHES = {
    'default': {
         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
         'LOCATION': 'openstack1:11211',
    }
}

#修改LOCATION为openstack1

Enable the Identity API version 3:

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

Enable support for domains:

OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = True

#keystone多域设置，修改成True，注意大写T

Configure API versions:

OPENSTACK_API_VERSIONS = {
    "identity": 3,
    "image": 2,
    "volume": 2,
}

Configure Default as the default domain for users that you create via the dashboard:
```
OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = "Default"
```

#这里必须是default

Configure user as the default role for users that you create via the dashboard:
```
OPENSTACK_KEYSTONE_DEFAULT_ROLE = "admin"
```

[root@openstack1 ~]# openstack role list
+----------------------------------+--------+
| ID                               | Name   |
+----------------------------------+--------+
| 89a2eb8f61ea44ec9d955ee33a0f7206 | member |
| c3123014d1f5438e9abd182d1bf40850 | reader |
| e90643cb08c946ffba1e69692b8a5baf | admin  |
+----------------------------------+--------+

#查出来的三个role里选一个使用，因为没有user这个角色

If you chose networking option 1, disable support for layer-3 networking services:

OPENSTACK_NEUTRON_NETWORK = {
    ...
    'enable_router': False,
    'enable_quotas': False,
    'enable_distributed_router': False,
    'enable_ha_router': False,
    'enable_lb': False,
    'enable_firewall': False,
    'enable_vpn': False,
    'enable_fip_topology_check': False,
}

#以OPENSTACK_NEUTRON_NETWORK为关键字搜索，直接花括号里面的内容替换掉

Optionally, configure the time zone:
```
TIME_ZONE = "Asia/Shanghai"
```

#时区这个没什么好说的，必定是这个啦

Add the following line to /etc/httpd/conf.d/openstack-dashboard.conf if not included.
```
WSGIApplicationGroup %{GLOBAL}
```

整个文件是这样的，加到第四行即可：

[root@openstack1 ~]# cat /etc/httpd/conf.d/openstack-dashboard.conf
WSGIDaemonProcess dashboard
WSGIProcessGroup dashboard
WSGISocketPrefix run/wsgi
WSGIApplicationGroup %{GLOBAL}

WSGIScriptAlias /dashboard /usr/share/openstack-dashboard/openstack_dashboard/wsgi/django.wsgi
Alias /dashboard/static /usr/share/openstack-dashboard/static

<Directory /usr/share/openstack-dashboard/openstack_dashboard/wsgi>
  Options All
  AllowOverride All
  Require all granted
</Directory>

<Directory /usr/share/openstack-dashboard/static>
  Options All
  AllowOverride All
  Require all granted
</Directory>

二，

登陆web仪表盘

账号是admin，密码是PASSWORD，登陆的URL是192.168.123.130/dashboard

因为openrc文件的内容是这个：

[root@openstack1 ~]# cat admin_rc.sh 
export OS_PROJECT_DOMAIN_NAME=Default
export OS_USER_DOMAIN_NAME=Default
export OS_PROJECT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=PASSWORD
export OS_AUTH_URL=http://openstack1:5000/v3
export OS_IDENTITY_API_VERSION=3
export OS_IMAGE_API_VERSION=2