一、创建数据库实例和数据库用户并授权

mysql -uroot -p
CREATE DATABASE placement;
GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'PLACEMENT_DBPASS';
GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' IDENTIFIED BY 'PLACEMENT_DBPASS';
flush privileges;
exit；

二、创建Placement服务用户和API的endpoint

'创建placement用户'
openstack user create --domain default --password PLACEMENT_PASS placement

'给与placement用户对service项目拥有admin权限'
openstack role add --project service --user placement admin

'创建一个placement服务，服务类型为placement'
openstack service create --name placement --description "Placement API" placement

'注册API端口到placement的service中；注册的信息会写入到mysql中'
openstack endpoint create --region RegionOne placement public http://ct:8778
openstack endpoint create --region RegionOne placement internal http://ct:8778
openstack endpoint create --region RegionOne placement admin http://ct:8778

三、安装placement服务

yum -y install openstack-placement-api

'修改placement配置文件'
cp -a /etc/placement/placement.conf{,.bak}

grep -Ev '^$|#' /etc/placement/placement.conf.bak > /etc/placement/placement.conf
openstack-config --set /etc/placement/placement.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
openstack-config --set /etc/placement/placement.conf api auth_strategy keystone
openstack-config --set /etc/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

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

四、修改Apache配置文件

安装完placement服务后会自动创建该文件-虚拟主机配置

cd /etc/httpd/conf.d
vim 00-placement-api.conf 

'末行添加'

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

systemctl restart httpd

五、测试结果

'curl 测试访问'
curl ct:8778

'查看端口占用（netstat、lsof）'
netstat -natp | grep 8778

'检查placement状态'
placement-status upgrade check