OpenStack 四 Placement组件部署

前言

• Placement服务 是从nova服务中拆分出来的组件，作用是收集各个node节点的可用资源，把node节点的资源统计写入到MySQL
• Placement服务会被nova scheduler服务进行调用
• Placement服务的监听端口是8778
• 接着OpenStack glance组件部署，继续配置，为Openstack安装Placement组件
• 以下操作在控制节点ct（192.168.139.12）上操作

一.创建数据库实例和数据库用户

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

##为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服务并修改配置文件

yum -y install openstack-placement-api

cp -a /etc/placement/placement.conf{,.bak}
grep -Ev '^$|#' /etc/placement/placement.conf.bak > /etc/placement/placement.conf

###传参###
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

cat /etc/placement/placement.conf                      #查看配置文件

su -s /bin/sh -c "placement-manage db sync" placement  #导入数据库

四.修改Apache配置文件

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          #重新启动服务

五.测试查看

curl ct:8778                     #curl 测试访问
netstat -natp | grep 8778        #查看端口占用（netstat或lsof）
placement-status upgrade check   #检查placement状态