Placement安装与配置（控制节点）

1、使用数据库访问客户端以 root 用户身份连接到数据库服务器：

# mysql -uroot -p123

Welcome to the MariaDB monitor. Commands end with ; or \g.

Your MariaDB connection id is 17

Server version: 10.3.20-MariaDB MariaDB Server

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

MariaDB [(none)]>

2、创建 placement 数据库

MariaDB [(none)]> CREATE DATABASE placement default character set utf8;

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' \

IDENTIFIED BY 'PLACEMENT_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' \

IDENTIFIED BY 'PLACEMENT_DBPASS';

3、创建 placement 用户

交互式：

# openstack user create --domain default --password-prompt placement

非交互式：

# openstack user create --domain default --password=placement placement

4、将 admin 角色添加到 placement 用户和 service 项目：

# openstack role add --project service --user placement admin

5、创建 placement 服务实体

# openstack service create --name placement \

--description "Placement API" placement

6、创建placement服务 API 端点

# openstack endpoint create --region RegionOne \

placement public http://controller:8778

# openstack endpoint create --region RegionOne \

placement internal http://controller:8778

# openstack endpoint create --region RegionOne \

placement admin http://controller:8778

7、安装Placement软件包

# yum install openstack-placement-api -y

8、修改配置文件 /etc/placement/placement.conf

# cd /etc/placement/ && mv placement.conf placement.conf.source && cat placement.conf.source |grep -Ev "^#|^$" > placement.conf && chown root:placement placement.conf

# vi /etc/placement/placement.conf

在 [placement_database] “配置数据库访问”部分中：

[placement_database]

# ...

connection = mysql+pymysql://placement:PLACEMENT_DBPASS@controller/placement

在 [api] and [keystone_authtoken] 部分中，配置 Identity service 访问权限：

[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 = placement

openstack-placement-api安装完成后会自动生成：/etc/httpd/conf.d/00-placement-api.conf文件

由于有个包的bug需要配置修改文件，需要修改nova虚拟主机配置文件，增加内容，完整的文件内容如下：

# vi /etc/httpd/conf.d/00-placement-api.conf

在三个#下面添加内容

#SSLEngine On

#SSLCertificateFile ...

#SSLCertificateKeyFile ...

Require all granted

</IfVersion>

Order allow,deny

Allow from all

</IfVersion>

</Directory>

</VirtualHost>

9、同步placement服务数据库

# su -s /bin/sh -c "placement-manage db sync" placement

10、重启httpd服务并验证Placement

# systemctl restart httpd

执行placement-status命令检查状态

# placement-status upgrade check

+----------------------------------+

| Upgrade Check Results |

+----------------------------------+

| Check: Missing Root Provider IDs |

| Result: Success |

| Details: None |

+----------------------------------+

| Check: Incomplete Consumers |

| Result: Success |

| Details: None |

+----------------------------------+

11、安装pip

# yum install -y epel-release

# yum install -y python-pip

# rm -rf /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel-testing.repo

配置国内pip源

# cat > /etc/pip.conf <<EOF

[global]

index-url = https://pypi.douban.com/simple/

[install]

trusted-host = https://pypi.douban.com

EOF

安装osc-placement插件

# pip install osc-placement==2.2.0

列出可用的资源类和特征

# openstack --os-placement-api-version 1.2 resource class list --sort-column name

# openstack --os-placement-api-version 1.6 trait list --sort-column name

如果是CentOS8，则直接执行 yum install python3-osc-placement 或 pip3 install osc-placement

osc_placement-3.1.1-py3-none-any.whl

placement.conf

[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 = placement

[oslo_policy]

[placement]

[placement_database]

connection = mysql+pymysql://placement:PLACEMENT_DBPASS@controller/placement

[profiler]

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 ...
<Directory /usr/bin>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
<IfVersion < 2.4>
Order allow,deny
Allow from all
</IfVersion>
</Directory>
</VirtualHost>

Alias /placement-api /usr/bin/placement-api
<Location /placement-api>
SetHandler wsgi-script
Options +ExecCGI
WSGIProcessGroup placement-api
WSGIApplicationGroup %{GLOBAL}
WSGIPassAuthorization On
</Location>