实验环境准备

在安装和配置放置服务之前，必须创建数据库、服务凭据和 API 终结点。

1.安装数据库

1.1.使用数据库访问客户端以用户身份连接到数据库服务器：root

[root@controller ~]# mysql -u root -pcom.123

1.2.创建数据库：placement

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

1.3.授予对数据库的适当访问权限：

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'com.123';
Query OK, 0 rows affected (0.001 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%'  IDENTIFIED BY 'com.123';
Query OK, 0 rows affected (0.000 sec)

2.配置用户和终结点

2.1.源凭据以访问仅管理员 CLI 命令：admin

[root@controller ~]# . admin-openrc

2.2.使用您选择的创建安置服务用户：

password =com.123

[root@controller openstack]# openstack user create --domain default --password-prompt placement
User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | a0313a57d2e449559267c2eaadb4a07c |
| name                | placement                        |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+
[root@controller openstack]#

2.3.使用管理员角色将展示用户添加到服务项目：

[root@controller ~]# openstack role add --project service --user placement admin

2.4.在服务目录中创建放置 API 条目：

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### 2.5.创建放置 API 服务终结点：

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## 3.安装和配置组件
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### 3.1.安装软件包：

[root@controller ~]# yum install openstack-placement-api -y

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### 3.2.编辑文件并完成以下操作：**/etc/placement/placement.conf**

- 配置数据库访问：[placement_database]
- 配置标识服务访问：[api][keystone_authtoken]

[root@controller ~]# vim /etc/placement/placement.conf

配置数据库访问

[placement_database] connection = mysql+pymysql://placement:com.123@controller/placement

配置标识服务访问

[api] auth_strategy = keystone [keystone_authtoken] auth_url = http://controller:5000/v3 memcached_servers = controller:11211 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = placement password = com.123

[root@controller ~]# grep -v ‘^$’ /etc/placement/placement.conf | grep -v ‘^#’ [DEFAULT] [api] auth_strategy = keystone [cors] [keystone_authtoken] auth_url = http://controller:5000/v3 memcached_servers = controller:11211 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = placement password = com.123 [oslo_policy] [placement] [placement_database] connection = mysql+pymysql://placement:com.123@controller/placement [profiler]

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### 3.3.填充数据库：placement

[root@controller ~]# 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)

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## 4.完成安装

- 重启httpd服务
- 开机自启服务
- 服务状态

[root@controller openstack]# systemctl enable httpd.service [root@controller openstack]# systemctl start httpd.service [root@controller openstack]# systemctl status httpd.service ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled) Active: active (running) since Mon 2022-02-21 10:44:28 CST; 21min ago Docs: man:httpd(8) man:apachectl(8) Main PID: 1035 (httpd) Status: “Total requests: 47; Current requests/sec: 0; Current traffic: 0 B/sec” CGroup: /system.slice/httpd.service ├─1035 /usr/sbin/httpd -DFOREGROUND ├─1190 (wsgi:keystone- -DFOREGROUND ├─1194 (wsgi:keystone- -DFOREGROUND ├─1195 (wsgi:keystone- -DFOREGROUND ├─1196 (wsgi:keystone- -DFOREGROUND ├─1198 (wsgi:keystone- -DFOREGROUND ├─1201 /usr/sbin/httpd -DFOREGROUND ├─1202 /usr/sbin/httpd -DFOREGROUND ├─1203 /usr/sbin/httpd -DFOREGROUND ├─1204 /usr/sbin/httpd -DFOREGROUND ├─1205 /usr/sbin/httpd -DFOREGROUND ├─2167 /usr/sbin/httpd -DFOREGROUND └─2191 /usr/sbin/httpd -DFOREGROUND

Feb 21 10:44:28 controller systemd[1]: Starting The Apache HTTP Server… Feb 21 10:44:28 controller systemd[1]: Started The Apache HTTP Server. [root@controller openstack]#

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## 5.验证安装
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### 5.1.源凭据以访问仅管理员 CLI 命令：admin

[root@controller ~]# . admin-openrc

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### 5.2.执行状态检查以确保一切井然有序：

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### 5.3.针对放置 API 运行一些命令：

- 安装osc 放置插件：
- 列出可用的资源类和特征：
- [https://docs.openstack.org/osc-placement/latest/](https://link.zhihu.com/?target=https%3A//docs.openstack.org/osc-placement/latest/)

[root@controller ~]# yum install epel-release -y [root@controller ~]# yum install python2-pip -y [root@controller ~]# mkdir /root/.pip [root@controller ~]# vim .pip/pip.conf [root@controller ~]# cat .pip/pip.conf [global] index-url = https://pypi.tuna.tsinghua.edu.cn/simple [install] trusted-host=pypi.tuna.tsinghua.edu.cn [root@controller ~]# pip install osc-placement Collecting osc-placement Downloading https://pypi.tuna.tsinghua.edu.cn/packages/0b/22/fa2bd745179a3ec06b719a392e844163f31ebb40f5f73cfe1b174a040daa/osc-placement-2.0.0.tar.gz (47kB) 100% |████████████████████████████████| 51kB 290kB/s Requirement already satisfied (use —upgrade to upgrade): pbr>=2.0.0 in /usr/lib/python2.7/site-packages (from osc-placement) Requirement already satisfied (use —upgrade to upgrade): six>=1.10.0 in /usr/lib/python2.7/site-packages (from osc-placement) Requirement already satisfied (use —upgrade to upgrade): keystoneauth1>=3.3.0 in /usr/lib/python2.7/site-packages (from osc-placement) Requirement already satisfied (use —upgrade to upgrade): simplejson>=3.16.0 in /usr/lib64/python2.7/site-packages (from osc-placement) Requirement already satisfied (use —upgrade to upgrade): osc-lib>=1.2.0 in /usr/lib/python2.7/site-packages (from osc-placement) Requirement already satisfied (use —upgrade to upgrade): oslo.utils>=3.37.0 in /usr/lib/python2.7/site-packages (from osc-placement) Installing collected packages: osc-placement Running setup.py install for osc-placement … done Successfully installed osc-placement-2.0.0

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## 6.报错解决 Expecting value: line 1 column 1 (char 0)
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### 6.1.错误分析
**这是因为我们在apache没有授权**

[root@controller ~]# openstack —os-placement-api-version 1.4 resource class list —sort-column name Expecting value: line 1 column 1 (char 0)

[root@controller ~]# vim /etc/httpd/conf.d/00-placement-api.conf Listen 8778

WSGIProcessGroup placement-api WSGIApplicationGroup %{GLOBAL} WSGIPassAuthorization On WSGIDaemonProcess placement-api processes=3 threads=1 user=placement group=placement WSGIScriptAlias / /usr/bin/placement-api = 2.4> ErrorLogFormat “%M” ErrorLog /var/log/placement/placement-api.log

SSLEngine On

SSLCertificateFile …

SSLCertificateKeyFile …

= 2.4> Require all granted Order allow,deny Allow from all Alias /placement-api /usr/bin/placement-api

SetHandler wsgi-script Options +ExecCGI WSGIProcessGroup placement-api WSGIApplicationGroup %{GLOBAL} WSGIPassAuthorization On [root@controller ~]# systemctl restart httpd.service [root@controller ~]# curl http://10.0.0.20:8778 {“versions”: [{“status”: “CURRENT”, “min_version”: “1.0”, “max_version”: “1.36”, “id”: “v1.0”, “links”: [{“href”: “”, “rel”: “self”}]}]} [root@controller ~]# openstack —os-placement-api-version 1.4 resource class list —sort-column name +——————————————+ | name | +——————————————+ | DISK_GB | | FPGA | | IPV4_ADDRESS | | MEMORY_MB | | MEM_ENCRYPTION_CONTEXT | | NET_BW_EGR_KILOBIT_PER_SEC | | NET_BW_IGR_KILOBIT_PER_SEC | | NUMA_CORE | | NUMA_MEMORY_MB | | NUMA_SOCKET | | NUMA_THREAD | | PCI_DEVICE | | PCPU | | PGPU | | SRIOV_NET_VF | | VCPU | | VGPU | | VGPU_DISPLAY_HEAD | +——————————————+ ```

openstack云计算

3.openstack_train_placement安装