OpenStack-Nova组件部署

宋安晏

2023-12-01

Nova 计算服务

1.Nova 简介

计算服务是openstack最核心的服务之一，负责维护和管理云环境的计算资源，它在openstack项目中代号是nova。
Nova自身并没有提供任何虚拟化能力，它提供计算服务，使用不同的虚拟化驱动来与底层支持的Hypervisor (虚拟机管理器)进行交互。所有的计算实例(虚拟服务器)由Nova进行生命周期的调度管理(启动、挂起、停止、删除等)，全局来看，nova为整个架构提供虚拟化资源、技术，服务层面来看，nova本身并不具备虚拟化能力，而是通过compute组件与虚拟化管理工具交互实现虚拟资源调度。
Nova需要keystone、glance、 neutron、 cinder和swift等其他服务的支持，能与这些服务集成，实现如加密磁盘、裸金属计算实例等。会和其他外部组件集成，共同完成请求

2.Nova 系统架构

外部服务包括keystone，neutron，glance，cinder这些nova服务需要与之交互的服务。
内部组件：
DB：用于数据存储的sql数据库，存放各组件的工作过程信息，后端裸金属实际的使用资源信息
API：用于接收HTTP请求、转换命令、通过消息队列或HTTP与其他组件通信
Scheduler：用于决定哪台计算节点承载计算实例，相当于nova的调度器
Network：管理IP转发，网桥或虚拟局域网，是一个网络组件
Compute：管理虚拟机管理器（VMM）与虚拟机之间通信，与hypervisor交互实现虚拟化调用底层硬件资源，计算组件
Conductor：处理需要协调的的请求（构建虚拟机或调整虚拟机大小的请求），或者处理对象转换

3.组件介绍

3.1 API

它是客户端访问nova的http接口，它由nova-api服务实现，nova-api服务接收和响应来自最终用户的计算api请求（包括跟虚拟机声明周期相关的操作），作为openstack对外服务的最主要接口，nova提供了一个集中的可以查询所有api的端点，以便自己平台内部和其他云平台的调用。
所有对nova的请求都首先由nova-api处理，API提供REST标准调用服务，便于与第三方系统集成（其他云平台）。它是外部访问并使用nova提供的各种服务的唯一途径，也是客户端和nova之间的中间件。
最终用户不会直接改送RESTful API 请求，而是通过openstack命令行，horison控制面板和其他需要跟nova交换的组件来使用这些API。
Nova-api对接收到的HTTP API请求做以下处理：
1、检查客户端传入的参数是否合法有效（而不止是进行认证）
2、调用nova其他服务来处理客户端HTTP请求
3、格式化nova其他子服务返回的结果，并返回给客户端

3.2 Scheduler

调度器的类型：

随机调度器：从所有正常运行nova-compute服务的节点中随机选择
缓存调度器：是随机调度器的一种特殊类型，在随机调度器的基础上，将主机资源信息缓存在本地内存中，然后通过后台的定时任务，定时从数据库中获取最新的主机资源信息，周期性同步而不是实时获取主机资源信息。
过滤器调度器：根据指定的过滤条件以及权重选择最佳的计算节点，又称为筛选器。

过滤器调度器调度过程：

通过指定的过滤器选择满足条件的计算节点，比如内存使用率，可以使用多个过滤器依次进行过滤。（预选）
对过滤之后的主机列表进行权重计算并排序，选择最优的计算节点来创建虚拟机实例。（优选）

过滤器类型：

RetryFilter（再审过滤器）
主要作用是过滤掉之前已经调度过的节点（类比污点）。如A、B、C都通过了过滤，A权重最大被选中执行操作，由于某种原因，操作在A上失败了。Nova-filter 将重新执行过滤操作，再审过滤器直接过滤掉A，以免再次失败。
AvailabilityZoneFilter（可用区域过滤器）
主要作用是提供容灾性，并提供隔离服务，可以将计算节点划分到不同的可用区域中。Openstack默认有一个命名为nova的可用区域，所有计算节点一开始都在其中。用户可以根据需要创建自己的一个可用区域。创建实例时，需要指定将实例部署在那个可用区域中。通过可用区过滤器，将不属于指定可用区的计算节点过滤掉。
RamFilter（内存过滤器）
根据可用内存来调度虚拟机创建，将不能满足实例类型内存需求的计算节点过滤掉，但为了提高系统资源利用率, Openstack在计算节点的可用内存允许超过实际内存大小，可临时突破上限，超过的程度是通过nova.conf配置文件中ram_ allocation_ ratio参数来控制的，默认值是1.5。（但这只是临时的）
Vi /etc/nova/nova . conf
Ram_ allocation_ ratio=1 .5
DiskFilter（硬盘过滤器）
根据磁盘空间来调度虚拟机创建，将不能满足类型磁盘需求的计算节点过滤掉。磁盘同样允许超量，超量值可修改nova.conf中disk_ allocation_ ratio参数控制，默认值是1.0，（也是临时的）
Vi /etc/nova/nova.conf
disk_ allocation_ ratio=1.0
CoreFilter（核心过滤器）
根据可用CPU核心来调度虚拟机创建，将不能满足实例类型vCPU需求的计算节点过滤掉。vCPU也允许超量，超量值是通过修改nova.conf中cpu_ allocation_ratio参数控制，默认值是16。
Vi /etc/nova/nova. conf
cpu_allocation_ ratio=16.0
ComputeFilter（计算过滤器）
保证只有nova-compute服务正常工作的计算节点才能被nova-scheduler调度，它是必选的过滤器。
ComputeCapabilitiesFilter（计算能力过滤器）
根据计算节点的特性来过了，如不同的架构。
ImagePropertiesFilter（镜像属性过滤器）
根据所选镜像的属性来筛选匹配的计算节点，通过元数据来指定其属性。如希望镜像只运行在KVM的Hypervisor上，可以通过Hypervisor Type属性来指定。
服务器组反亲和性过滤器
要求尽量将实例分散部署到不同的节点上，设置一个服务器组，组内的实例会通过此过滤器部署到不同的计算节点。适用于需要分开部署的实例。
服务器组亲和性过滤器
此服务器组内的实例，会通过此过滤器，被部署在同一计算节点上，适用于需要位于相同节点的实例服务。

权重：

在对计算节点进行过滤时，多个过滤器依次进行过滤，而不是并行，相当于一个个预选，避免重复对同一个节点进行所有过滤项检验。过滤之后的节点再通过计算权重进行排序。
所有权重位于nova/scheduler/weights 目录下，目前默认是RAMweighter，根据计算节点空闲的内存计算权重，内存空闲越多权重越大，计算节点按照内存空闲进行排序。

3.3 compute计算组件

Nova-compute在计算节点上运行，负责管理节点上的实例。通常一个主机运行一个Nova-compute服务, 一个实例部署在哪个可用的主机上取决于调度算法。OpenStack对实例的操作最后都是提交给Nova-compute来完成。
Nova-compute可分为两类，一类是定向openstack报告计算节点的状态，另一类是实现实例生命周期的管理。

3.4 conductor协调组件

以前对资源的管理全部由计算节点承担，在统计资源使用情况时，只是简单的将所有计算节点的资源情况累加起来，但是系统中还存在外部资源，这些资源由外部系统提供。如ceph、nfs等提供的存储资源等。
面对多种多样的资源提供者，管理员需要统一的、简单的管理接口来统计系统中资源使用情况，这个接口就是Placement API。
PlacementAPI由nova-placement-api服务来实现，旨在追踪记录资源提供者的目录和资源使用情况。被消费的资源类型是按类进行跟踪的。如计算节点类、共享存储池类、IP地址类等。

OpenStack-Placement组件部署

1.创建数据库实例和数据库用户

[root@ct ~]# mysql -uroot -p123456
MariaDB [(none)]> CREATE DATABASE placement;   //创建数据库
Query OK, 1 row affected (0.022 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'PLACEMENT_DBPASS';    //提权
Query OK, 0 rows affected (0.360 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' IDENTIFIED BY 'PLACEMENT_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> flush privileges;        //刷新权限表
Query OK, 0 rows affected (0.029 sec)

MariaDB [(none)]> show grants for placement;     //查看权限
+----------------------------------------------------------------------------------------------------------+
| Grants for placement@%                                                                                   |
+----------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'placement'@'%' IDENTIFIED BY PASSWORD '*15FD36E65AB25104A6C00E6FBCF43E4CD8FFAAFC' |
| GRANT ALL PRIVILEGES ON `placement`.* TO 'placement'@'%'                                                 |
+----------------------------------------------------------------------------------------------------------+
2 rows in set (0.000 sec)

MariaDB [(none)]>

2.创建Placement服务用户和API的endpoint

2.1 创建placement用户，给与placement用户对service项目拥有admin权限

[root@ct ~]#  openstack user create --domain default --password PLACEMENT_PASS placement
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 8d4d934d91f9416b90cfc9e6d4a4d341 |
| name                | placement                        |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+
[root@ct ~]# openstack role add --project service --user placement admin
[root@ct ~]#

2.2 创建一个placement服务，服务类型为placement

[root@ct ~]#  openstack service create --name placement --description "Placement API" placement
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Placement API                    |
| enabled     | True                             |
| id          | 9bb91f636d8040d885e63533b6c914bf |
| name        | placement                        |
| type        | placement                        |
+-------------+----------------------------------+
[root@ct ~]#

2.3 注册API端口到placement的service中；注册的信息会写入到mysql中

[root@ct ~]# openstack endpoint create --region RegionOne placement public http://ct:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 39fad625ca37439bab5f6a1c4aa6da8c |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 9bb91f636d8040d885e63533b6c914bf |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://ct:8778                   |
+--------------+----------------------------------+
[root@ct ~]# openstack endpoint create --region RegionOne placement internal http://ct:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | be9ad1bee0464b6095ee2ee526fab14f |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 9bb91f636d8040d885e63533b6c914bf |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://ct:8778                   |
+--------------+----------------------------------+
[root@ct ~]# openstack endpoint create --region RegionOne placement admin http://ct:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 3feab16818154d6b973482f68e6feccd |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 9bb91f636d8040d885e63533b6c914bf |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://ct:8778                   |
+--------------+----------------------------------+
[root@ct ~]#

2.4 安装placement服务

[root@ct ~]#  yum -y install openstack-placement-api
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-ceph-nautilus: mirrors.cn99.com
 * centos-nfs-ganesha28: mirrors.cn99.com
 * centos-openstack-train: mirrors.cn99.com
 * centos-qemu-ev: mirrors.cn99.com
 * extras: mirrors.cn99.com
 * updates: mirrors.cn99.com
软件包 openstack-placement-api-2.0.1-1.el7.noarch 已安装并且是最新版本
无须任何处理
[root@ct ~]#

2.5 修改placement配置文件

[root@ct ~]# cp /etc/placement/placement.conf{,.bak}   //备份
[root@ct ~]# grep -Ev '^$|#' /etc/placement/placement.conf.bak > /etc/placement/placement.conf   //过滤
[root@ct ~]# openstack-config --set /etc/placement/placement.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
/placement.conf keystone_authtoken auth_url  http://ct:5000/v3
openstack-config --set /etc/placement/placement.conf keystone_authtoken memcached_servers ct:11211
openstack-config --set /etc/placement/placement.conf keystone_authtoken auth_type password
openstack-config --set /etc/placement/placement.conf keystone_authtoken project_domain_name Default
openstack-config --set /etc/placement/placement.conf keystone_authtoken user_domain_name Default
openstack-config --set /etc/placement/placement.conf keystone_authtoken project_name service
openstack-config --set /etc/placement/placement.conf keystone_authtoken username placement
openstack-config --set /etc/placement/placement.conf keystone_authtoken password PLACEMENT_PASS[root@ct ~]# openstack-config --set /etc/placement/placement.conf api auth_strategy keystone
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken auth_url  http://ct:5000/v3
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken memcached_servers ct:11211
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken auth_type password
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken project_domain_name Default
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken user_domain_name Default
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken project_name service
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken username placement
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken password PLACEMENT_PASS
[root@ct ~]# cat /etc/placement/placement.conf
[DEFAULT]
[api]
auth_strategy = keystone
[cors]
[keystone_authtoken]
auth_url = http://ct:5000/v3
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = placement
password = PLACEMENT_PASS
[oslo_policy]
[placement]
[placement_database]
connection = mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
[profiler]
[root@ct ~]#

2.6 初始化数据库

[root@ct ~]# su -s /bin/sh -c "placement-manage db sync" placement
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: Warning: (1280, u"Name 'alembic_version_pkc' ignored for PRIMARY key.")
  result = self._query(query)
[root@ct ~]# mysql -uroot -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 41
Server version: 10.3.20-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> use placement;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [placement]> show tables;
+------------------------------+
| Tables_in_placement          |
+------------------------------+
| alembic_version              |
| allocations                  |
| consumers                    |
| inventories                  |
| placement_aggregates         |
| projects                     |
| resource_classes             |
| resource_provider_aggregates |
| resource_provider_traits     |
| resource_providers           |
| traits                       |
| users                        |
+------------------------------+
12 rows in set (0.000 sec)

2.7 修改Apache配置文件

[root@ct ~]# cd /etc/httpd/conf.d/
[root@ct conf.d]# cat 00-placement-api.conf 
Listen 8778

<VirtualHost *:8778>
  WSGIProcessGroup placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
  WSGIDaemonProcess placement-api processes=3 threads=1 user=placement group=placement
  WSGIScriptAlias / /usr/bin/placement-api
  <IfVersion >= 2.4>
    ErrorLogFormat "%M"
  </IfVersion>
  ErrorLog /var/log/placement/placement-api.log
  #SSLEngine On
  #SSLCertificateFile ...
  #SSLCertificateKeyFile ...
</VirtualHost>

Alias /placement-api /usr/bin/placement-api
<Location /placement-api>
  SetHandler wsgi-script
  Options +ExecCGI
  WSGIProcessGroup placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
</Location>
[root@ct conf.d]# vim 00-placement-api.conf 
[root@ct conf.d]# cat 00-placement-api.conf 
Listen 8778

<VirtualHost *:8778>
  WSGIProcessGroup placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
  WSGIDaemonProcess placement-api processes=3 threads=1 user=placement group=placement
  WSGIScriptAlias / /usr/bin/placement-api
  <IfVersion >= 2.4>
    ErrorLogFormat "%M"
  </IfVersion>
  ErrorLog /var/log/placement/placement-api.log
  #SSLEngine On
  #SSLCertificateFile ...
  #SSLCertificateKeyFile ...
</VirtualHost>

Alias /placement-api /usr/bin/placement-api
<Location /placement-api>
  SetHandler wsgi-script
  Options +ExecCGI
  WSGIProcessGroup placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
</Location>
<Directory /usr/bin>			//此处是bug，必须添加下面的配置来启用对placement api的访问，否则在访问apache的
<IfVersion >= 2.4>				//api时会报403；添加在文件的最后即可
	Require all granted
</IfVersion>
<IfVersion < 2.4>				//apache版本；允许apache访问/usr/bin目录；否则/usr/bin/placement-api将不允许被访问
	Order allow,deny				
	Allow from all			//允许apache访问
</IfVersion>
</Directory>

[root@ct conf.d]# systemctl restart httpd

2.8 测试

[root@ct conf.d]# netstat -natp | grep 8778    //监听端口
tcp6       0      0 :::8778                 :::*                    LISTEN      105254/httpd        
[root@ct conf.d]# curl ct:8778
{"versions": [{"status": "CURRENT", "min_version": "1.0", "max_version": "1.36", "id": "v1.0", "links": [{"href": "", "rel": "self"}]}]}
[root@ct conf.d]# placement-status upgrade check  // 检查placement状态
+----------------------------------+
| Upgrade Check Results            |
+----------------------------------+
| Check: Missing Root Provider IDs |
| Result: Success                  |
| Details: None                    |
+----------------------------------+
| Check: Incomplete Consumers      |
| Result: Success                  |
| Details: None                    |
+----------------------------------+
[root@ct conf.d]#

OpenStack-nova组件部署

1.创建nova数据库，并执行授权操作（控制节点）

[root@ct ~]# mysql -uroot -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 44
Server version: 10.3.20-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE nova_api;   //创建库
Query OK, 1 row affected (0.000 sec)

MariaDB [(none)]> CREATE DATABASE nova;
Query OK, 1 row affected (0.000 sec)

MariaDB [(none)]>  CREATE DATABASE nova_cell0;
Query OK, 1 row affected (0.000 sec)

MariaDB [(none)]>  GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';    //提权
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.001 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]>  GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]>  flush privileges;
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> show grants for nova;
+-----------------------------------------------------------------------------------------------------+
| Grants for nova@%                                                                                   |
+-----------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'nova'@'%' IDENTIFIED BY PASSWORD '*B79B482785488AB91D97EAFCAD7BA8839EF65AD3' |
| GRANT ALL PRIVILEGES ON `nova`.* TO 'nova'@'%'                                                      |
| GRANT ALL PRIVILEGES ON `nova_api`.* TO 'nova'@'%'                                                  |
| GRANT ALL PRIVILEGES ON `nova_cell0`.* TO 'nova'@'%'                                                |
+-----------------------------------------------------------------------------------------------------+
4 rows in set (0.000 sec)

2.管理Nova用户及服务（控制节点）

2.1 创建nova用户

[root@ct ~]# openstack user create --domain default --password NOVA_PASS nova
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | f7151a066eae4de885549a46e9bde601 |
| name                | nova                             |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+
[root@ct ~]# openstack role add --project service --user nova admin  //把nova用户添加到service项目，拥有admin权限

2.2 创建nova服务，关联endpoint

[root@ct ~]#  openstack service create --name nova --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Compute                |
| enabled     | True                             |
| id          | 6db31b4f5a3e48e8a9a491bb22e24165 |
| name        | nova                             |
| type        | compute                          |
+-------------+----------------------------------+
[root@ct ~]#  openstack endpoint create --region RegionOne compute public http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 84d98eb76e1648f2a28182b32f596e9c |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 6db31b4f5a3e48e8a9a491bb22e24165 |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+
[root@ct ~]# openstack endpoint create --region RegionOne compute internal http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | e97d23c4c4e44487b1bf4f2716ebb2a9 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 6db31b4f5a3e48e8a9a491bb22e24165 |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+
[root@ct ~]#  openstack endpoint create --region RegionOne compute admin http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 53edd0d62b8842fdb0d91d700b8c106c |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 6db31b4f5a3e48e8a9a491bb22e24165 |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+
[root@ct ~]#

2.3 安装nova组件

[root@ct ~]#  yum -y install openstack-nova-api openstack-nova-conductor openstack-nova-novncproxy openstack-nova-scheduler
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-ceph-nautilus: mirrors.aliyun.com
 * centos-nfs-ganesha28: mirrors.aliyun.com
 * centos-openstack-train: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
软件包 1:openstack-nova-api-20.6.0-1.el7.noarch 已安装并且是最新版本
软件包 1:openstack-nova-conductor-20.6.0-1.el7.noarch 已安装并且是最新版本
软件包 1:openstack-nova-novncproxy-20.6.0-1.el7.noarch 已安装并且是最新版本
软件包 1:openstack-nova-scheduler-20.6.0-1.el7.noarch 已安装并且是最新版本
无须任何处理

2.4 修改nova配置文件(nova.conf)

[root@ct ~]#  cp -a /etc/nova/nova.conf{,.bak}   //备份
[root@ct ~]#  grep -Ev '^$|#' /etc/nova/nova.conf.bak > /etc/nova/nova.conf    //过滤
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
 openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
 openstack-config --set /etc/nova/nova.conf api_database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api
 openstack-config --set /etc/nova/nova.conf database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova
 openstack-config --set /etc/nova/nova.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
 openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://ct:5000/v3
 openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers ct:11211
 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
 openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name Default
 openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name Default
 openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
 openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
 openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS
 openstack-config --set /etc/nova/nova.conf vnc enabled true
 openstack-config --set /etc/nova/nova.conf vnc server_listen ' $my_ip'
 openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address ' $my_ip'
 openstack-config --set /etc/nova/nova.conf glance api_servers http://ct:9292
 openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
 openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
 openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
 openstack-config --set /etc/nova/nova.conf placement project_name service
 openstack-config --set /etc/nova/nova.conf placement auth_type password
 openstack-config --set /etc/nova/nova.conf placement user_domain_name De[root@ct ~]#  openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.10.100
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron true
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf api_database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://ct:5000/v3
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers ct:11211
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name Default
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name Default
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf vnc enabled true
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf vnc server_listen ' $my_ip'
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address ' $my_ip'
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf glance api_servers http://ct:9292
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement project_name service
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement auth_type password
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement user_domain_name Default
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement auth_url http://ct:5000/v3
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement username placement
[root@ct ~]#  openstack-config --set /etc/nova/nova.conf placement password PLACEMENT_PASS
[root@ct ~]#  cat /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
my_ip = 192.168.10.100
use_neutron = true
firewall_driver = nova.virt.firewall.NoopFirewallDriver
transport_url = rabbit://openstack:RABBIT_PASS@ct
[api]
auth_strategy = keystone
[api_database]
connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api
[barbican]
[cache]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[database]
connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://ct:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://ct:5000/v3
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS
[libvirt]
[metrics]
[mks]
[neutron]
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://ct:5000/v3
username = placement
password = PLACEMENT_PASS
[powervm]
[privsep]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = true
server_listen =  $my_ip
server_proxyclient_address =  $my_ip
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]


[placement_database]
connection = mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
[root@ct ~]#

2.5 初始化数据库

[root@ct ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
[root@ct ~]# mysql -uroot -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 51
Server version: 10.3.20-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [nova]> use nova_api
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [nova_api]> show tables;
+------------------------------+
| Tables_in_nova_api           |
+------------------------------+
| aggregate_hosts              |
| aggregate_metadata           |
| aggregates                   |
| allocations                  |
| build_requests               |
| cell_mappings                |
| consumers                    |
| flavor_extra_specs           |
| flavor_projects              |
| flavors                      |
| host_mappings                |
| instance_group_member        |
| instance_group_policy        |
| instance_groups              |
| instance_mappings            |
| inventories                  |
| key_pairs                    |
| migrate_version              |
| placement_aggregates         |
| project_user_quotas          |
| projects                     |
| quota_classes                |
| quota_usages                 |
| quotas                       |
| request_specs                |
| reservations                 |
| resource_classes             |
| resource_provider_aggregates |
| resource_provider_traits     |
| resource_providers           |
| traits                       |
| users                        |
+------------------------------+
32 rows in set (0.001 sec)

MariaDB [nova_api]>

2.5 注册cell0数据库

[root@ct ~]#  su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
[root@ct ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova  //创建cell单元格
b09c87a3-10bf-42f6-acbc-dc77b916a97b
[root@ct ~]# su -s /bin/sh -c "nova-manage db sync" nova
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: Warning: (1831, u'Duplicate index `block_device_mapping_instance_uuid_virtual_name_device_name_idx`. This is deprecated and will be disallowed in a future release')
  result = self._query(query)
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: Warning: (1831, u'Duplicate index `uniq_instances0uuid`. This is deprecated and will be disallowed in a future release')
  result = self._query(query)
[root@ct ~]# su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova   //验证
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
|  名称 |                 UUID                 |       Transport URL        |                数据库连接               | Disabled |
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 |           none:/           | mysql+pymysql://nova:****@ct/nova_cell0 |  False   |
| cell1 | b09c87a3-10bf-42f6-acbc-dc77b916a97b | rabbit://openstack:****@ct |    mysql+pymysql://nova:****@ct/nova    |  False   |
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
[root@ct ~]#

2.6 启动服务

[root@ct ~]# systemctl enable openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-api.service to /usr/lib/systemd/system/openstack-nova-api.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-scheduler.service to /usr/lib/systemd/system/openstack-nova-scheduler.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-conductor.service to /usr/lib/systemd/system/openstack-nova-conductor.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-novncproxy.service to /usr/lib/systemd/system/openstack-nova-novncproxy.service.
[root@ct ~]# systemctl start openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
[root@ct ~]#

2.7 验证

[root@ct ~]# netstat -tnlup|egrep '8774|8775'
tcp        0      0 0.0.0.0:8775            0.0.0.0:*               LISTEN      107116/python2      
tcp        0      0 0.0.0.0:8774            0.0.0.0:*               LISTEN      107116/python2      
[root@ct ~]# curl http://ct:8774
{"versions": [{"status": "SUPPORTED", "updated": "2011-01-21T11:33:21Z", "links": [{"href": "http://ct:8774/v2/", "rel": "self"}], "min_version": "", "version": "", "id": "v2.0"}, {"status": "CURRENT", "updated": "2013-07-23T11:33:21Z", "links": [{"href": "http://ct:8774/v2.1/", "rel": "self"}], "min_version": "2.1", "version": "2.79", "id": "v2.1"}]}

3.配置nova服务 (计算节点)

3.1 安装nova-compute组件

[root@c1 ~]# yum -y install openstack-nova-compute
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * centos-ceph-nautilus: mirrors.aliyun.com
 * centos-nfs-ganesha28: mirrors.aliyun.com
 * centos-openstack-train: mirrors.aliyun.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.huaweicloud.com
 * updates: mirrors.aliyun.com
软件包 1:openstack-nova-compute-20.6.0-1.el7.noarch 已安装并且是最新版本
无须任何处理
[root@c1 ~]#

3.2 修改配置文件

[root@c1 ~]# cp -a /etc/nova/nova.conf{,.bak}  //备份
[root@c1 ~]# grep -Ev '^$|#' /etc/nova/nova.conf.bak > /etc/nova/nova.conf    //过滤
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.10.101
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron true
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://ct:5000/v3
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers ct:11211
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name Default
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name Default
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf vnc enabled true
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf vnc server_listen 0.0.0.0
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address ' $my_ip'
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf vnc novncproxy_base_url http://192.168.10.100:6080/vnc_auto.html
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf glance api_servers http://ct:9292
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement project_name service
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement auth_type password
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement user_domain_name Default
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement auth_url http://ct:5000/v3
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement username placement
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf placement password PLACEMENT_PASS
[root@c1 ~]# openstack-config --set /etc/nova/nova.conf libvirt virt_type qemu
[root@c1 ~]# cat /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:RABBIT_PASS@ct
my_ip = 192.168.10.101
use_neutron = true
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[api_database]
[barbican]
[cache]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[database]
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://ct:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://ct:5000/v3
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS
[libvirt]
virt_type = qemu
[metrics]
[mks]
[neutron]
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://ct:5000/v3
username = placement
password = PLACEMENT_PASS
[powervm]
[privsep]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = true
server_listen = 0.0.0.0
server_proxyclient_address =  $my_ip
novncproxy_base_url = http://192.168.10.100:6080/vnc_auto.html
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]
[root@c1 ~]#

2.3 开启服务

[root@c1 ~]# systemctl enable libvirtd.service openstack-nova-compute.service 
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@c1 ~]# systemctl start libvirtd.service openstack-nova-compute.service

3.controller节点操作

3.1 查看compute节点是否注册到controller上，通过消息队列；需要在controller节点执行

[root@ct ~]# openstack compute service list --service nova-compute
+----+--------------+------+------+---------+-------+----------------------------+
| ID | Binary       | Host | Zone | Status  | State | Updated At                 |
+----+--------------+------+------+---------+-------+----------------------------+
|  7 | nova-compute | c2   | nova | enabled | up    | 2021-08-26T08:17:08.000000 |
|  8 | nova-compute | c1   | nova | enabled | up    | 2021-08-26T08:17:09.000000 |
+----+--------------+------+------+---------+-------+----------------------------+
[root@ct ~]#

3.2 扫描当前openstack中有哪些计算节点可用，发现后会把计算节点创建到cell中，后面就可以在cell中创建虚拟机

[root@ct ~]#  su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
Found 2 cell mappings.
Skipping cell0 since it does not contain hosts.
Getting computes from cell 'cell1': b09c87a3-10bf-42f6-acbc-dc77b916a97b
Checking host mapping for compute host 'c2': f765d285-bcc1-4b56-993b-8f89c836fb0d
Creating host mapping for compute host 'c2': f765d285-bcc1-4b56-993b-8f89c836fb0d
Checking host mapping for compute host 'c1': 9b5390b1-8bb7-488e-b476-5544a8ca8946
Creating host mapping for compute host 'c1': 9b5390b1-8bb7-488e-b476-5544a8ca8946
Found 2 unmapped computes in cell: b09c87a3-10bf-42f6-acbc-dc77b916a97b

3.3 修改控制端nova的主配置文件

[root@ct ~]# vim /etc/nova/nova.conf
[scheduler]
discover_hosts_in_cells_interval = 300			#每300秒扫描一次
[root@ct ~]# systemctl restart openstack-nova-api.service

3.4 验证计算节点服务

[root@ct ~]# openstack compute service list   //检查 nova 的各个服务是否都是正常，以及 compute 服务是否注册成功
+----+----------------+------+----------+---------+-------+----------------------------+
| ID | Binary         | Host | Zone     | Status  | State | Updated At                 |
+----+----------------+------+----------+---------+-------+----------------------------+
|  1 | nova-conductor | ct   | internal | enabled | up    | 2021-08-26T08:22:54.000000 |
|  4 | nova-scheduler | ct   | internal | enabled | up    | 2021-08-26T08:22:59.000000 |
|  7 | nova-compute   | c2   | nova     | enabled | up    | 2021-08-26T08:22:58.000000 |
|  8 | nova-compute   | c1   | nova     | enabled | up    | 2021-08-26T08:22:58.000000 |
+----+----------------+------+----------+---------+-------+----------------------------+
[root@ct ~]# openstack catalog list   //查看各个组件的 api 是否正常
+-----------+-----------+---------------------------------+
| Name      | Type      | Endpoints                       |
+-----------+-----------+---------------------------------+
| nova      | compute   | RegionOne                       |
|           |           |   admin: http://ct:8774/v2.1    |
|           |           | RegionOne                       |
|           |           |   public: http://ct:8774/v2.1   |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:8774/v2.1 |
|           |           |                                 |
| keystone  | identity  | RegionOne                       |
|           |           |   public: http://ct:5000/v3/    |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:5000/v3/  |
|           |           | RegionOne                       |
|           |           |   admin: http://ct:5000/v3/     |
|           |           |                                 |
| placement | placement | RegionOne                       |
|           |           |   public: http://ct:8778        |
|           |           | RegionOne                       |
|           |           |   admin: http://ct:8778         |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:8778      |
|           |           |                                 |
| glance    | image     | RegionOne                       |
|           |           |   internal: http://ct:9292      |
|           |           | RegionOne                       |
|           |           |   admin: http://ct:9292         |
|           |           | RegionOne                       |
|           |           |   public: http://ct:9292        |
|           |           |                                 |
+-----------+-----------+---------------------------------+
[root@ct ~]# openstack image list    //查看是否能够拿到镜像
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| e8390729-8e4a-4a4a-9ccb-9c1f6bc4a3c2 | cirros | active |
+--------------------------------------+--------+--------+
[root@ct ~]# nova-status upgrade check   //查看cell的api和placement的api是否正常，只要其中一个有误，后期无法创建虚拟机
+--------------------------------+
| Upgrade Check Results          |
+--------------------------------+
| Check: Cells v2                |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Placement API           |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Ironic Flavor Migration |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Cinder API              |
| Result: Success                |
| Details: None                  |
+--------------------------------+
[root@ct ~]#