OpenStack-Placement组件部署-----T版

一、创建数据库实例和数据库用户

[root@controller ~]# mysql -uroot -p123456MariaDB [(none)]> CREATE DATABASE placement;
Query OK, 1 row affected (0.001 sec)MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'PLACEMENT_DBPASS';
Query OK, 0 rows affected (0.001 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;
Query OK, 0 rows affected (0.001 sec)MariaDB [(none)]> exit
Bye

二、创建Placement服务用户和API的endpoint

2.1、创建placement用户

[root@controller ~]# openstack user create --domain default --password PLACEMENT_PASS placement+---------------------+----------------------------------+| Field               | Value                            |+---------------------+----------------------------------+| domain_id           | default                          || enabled             | True                             || id                  | c46bb0ad1f794a0e9a32e8c4dd5e3002 || name                | placement                        || options             | {}                               || password_expires_at | None                             |+---------------------+----------------------------------+

2.2、给与placement用户对service项目拥有admin权限

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

2.3、创建一个placement服务，服务类型为placement

[root@controller ~]#  openstack service create --name placement --description "Placement API" placement+-------------+----------------------------------+| Field       | Value                            |+-------------+----------------------------------+| description | Placement API                    || enabled     | True                             || id          | c40c9d63e11a427cac215bbbb630da97 || name        | placement                        || type        | placement                        |+-------------+----------------------------------+

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

[root@controller ~]# openstack endpoint create --region RegionOne placement public http://controller:8778+--------------+----------------------------------+| Field        | Value                            |+--------------+----------------------------------+| enabled      | True                             || id           | 3b498d3a66024a3395e9869556063db5 || interface    | public                           || region       | RegionOne                        || region_id    | RegionOne                        |
| service_id   | c40c9d63e11a427cac215bbbb630da97 |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://controller:8778           |
+--------------+----------------------------------+[root@controller ~]# openstack endpoint create --region RegionOne placement internal http://controller:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 668b2c9ea7294329b66d10281605be54 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | c40c9d63e11a427cac215bbbb630da97 |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://controller:8778           |
+--------------+----------------------------------+[root@controller ~]# openstack endpoint create --region RegionOne placement admin http://controller:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | bce7894222d14766af11a1e930973b3b |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | c40c9d63e11a427cac215bbbb630da97 |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://controller:8778           |
+--------------+----------------------------------+

2.5、安装placement服务

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

2.6、修改placement配置文件

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

2.7、导入数据库

[root@controller ~]# su -s /bin/sh -c "placement-manage db sync" placement

2.8、修改Apache配置文件： 00-placemenct-api.conf（安装完placement服务后会自动创建该文件-虚拟主机配置）

在这里插入代码片[root@controller ~]# cd /etc/httpd/conf.d/
[root@controller conf.d]# vi 00-placement-api.conf
配置最末尾添加
<Directory /usr/bin>
<IfVersion >= 2.4>Require all granted
</IfVersion>
<IfVersion < 2.4>Order allow,denyAllow from all
</IfVersion>
</Directory>

2.9、重新启动apache

[root@controller ~]# systemctl restart httpd

2.10、测试

① curl 测试访问

[root@controller ~]# curl controller:8778
{"versions": [{"status": "CURRENT", "min_version": "1.0", "max_version": "1.36", "id": "v1.0", "links": [{"href": "", "rel": "self"}]}]}

② 查看端口占用（netstat、lsof）

[root@controller ~]# netstat -natp | grep 8778
tcp        0      0 192.168.100.11:52780    192.168.100.11:8778     TIME_WAIT   -
tcp6       0      0 :::8778                 :::*                    LISTEN      24925/httpd

③ 检查placement状态

[root@controller ~]# placement-status upgrade check+----------------------------------+| Upgrade Check Results            |+----------------------------------+| Check: Missing Root Provider IDs || Result: Success                  || Details: None                    |+----------------------------------+| Check: Incomplete Consumers      || Result: Success                  || Details: None                    |+----------------------------------+

小结

1、Placement提供了placement-apiWSGI脚本，用于与Apache，nginx或其他支持WSGI的Web服务器一起运行服务(通过nginx或apache实现python入口代理)。

2、根据用于部署OpenStack的打包解决方案，WSGI脚本可能位于/usr/bin 或中/usr/local/bin

3、Placement服务是从 S 版本，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