目录
- OpenStack-Placement组件部署
- 创建数据库实例和数据库用户
- 创建Placement服务用户和API的endpoint
- 总结
OpenStack-Placement组件部署
继之前glance部署之后，继续部署Placement
创建数据库实例和数据库用户
[root@ct ~]# mysql -uroot -p
MariaDB [(none)]> CREATE DATABASE placement;
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';
MariaDB [(none)]> flush privileges;
MariaDB [(none)]> exit；
创建Placement服务用户和API的endpoint
1. 创建placement用户
[root@ct ~]# openstack user create --domain default --password PLACEMENT_PASS placement
+---------------------+----------------------------------+
| Field | Value |
+---------------------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | b80931301cea4ce8a65ac44a6180eac3 |
| name | placement |
| options | {} |
| password_expires_at | None |
+---------------------+----------------------------------+2. 给与placement用户对service项目拥有admin权限
[root@ct ~]# openstack role add --project service --user placement admin
3. 创建一个placement服务，服务类型为placement
[root@ct ~]# openstack service create --name placement --description "Placement API" placement
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | Placement API |
| enabled | True |
| id | fba2464f7e064a7bb8ae0a0425b76917 |
| name | placement |
| type | placement |
+-------------+----------------------------------+4. 注册API端口到placement的service中；注册的信息会写入到mysql中
[root@ct ~]# [root@ct ~]# openstack endpoint create --region RegionOne placement public http://ct:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 1be168ac2c0644138489527c22d5e8fe |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | fba2464f7e064a7bb8ae0a0425b76917 |
| service_name | placement |
| service_type | placement |
| url | http://ct:8778 |
+--------------+----------------------------------+[root@ct ~]# [root@ct ~]# openstack endpoint create --region RegionOne placement internal http://ct:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 32fc51e7d0fb4069b0f3bd75e3a31a19 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | fba2464f7e064a7bb8ae0a0425b76917 |
| service_name | placement |
| service_type | placement |
| url | http://ct:8778 |
+--------------+----------------------------------+[root@ct~]# [root@ct ~]# openstack endpoint create --region RegionOne placement admin http://ct:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 19db02869d5246c392ca079830347e6a |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | fba2464f7e064a7bb8ae0a0425b76917 |
| service_name | placement |
| service_type | placement |
| url | http://ct:8778 |
+--------------+----------------------------------+5. 安装placement服务
[root@controller ~]# yum -y install openstack-placement-api
6. 修改placement配置文件
- 拷贝必要配置文件
[root@ct ~]# cp /etc/placement/placement.conf{,.bak}
[root@ct ~]# grep -Ev '^$|#' /etc/placement/placement.conf.bak > /etc/placement/placement.conf
- 修改配置文件
[root@ct ~]# openstack-config --set /etc/placement/placement.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
[root@ct ~]# openstack-config --set /etc/placement/placement.conf api auth_strategy keystone
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken auth_url http://ct:5000/v3
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken memcached_servers ct:11211
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken auth_type password
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken project_domain_name Default
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken user_domain_name Default
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken project_name service
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken username placement
[root@ct ~]# openstack-config --set /etc/placement/placement.conf keystone_authtoken password PLACEMENT_PASS
- 查看placement配置文件
[root@ct ~]# cd /etc/placement/
[root@ct placement]# cat placement.conf
[DEFAULT]
[api]
auth_strategy = keystone
[cors]
[keystone_authtoken]
auth_url = http://ct:5000/v3 //指定keystone地址
memcached_servers = ct:11211 //session信息是缓存放到了memcached中
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@ct/placement
[profiler]
7. 导入数据库
[root@ct ~]# 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)
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 ）
- 虚拟主机配置文件
[root@ct ~]# cd /etc/httpd/conf.d/
[root@ct conf.d]# cat 00-placement-api.conf //安装完placement会自动创建此文件[root@ct conf.d]# vim 00-placement-api.conf
Listen 8778<VirtualHost *:8778>WSGIProcessGroup placement-apiWSGIApplicationGroup %{GLOBAL}WSGIPassAuthorization OnWSGIDaemonProcess placement-api processes=3 threads=1 user=placement group=placementWSGIScriptAlias / /usr/bin/placement-api<IfVersion >= 2.4>ErrorLogFormat "%M"</IfVersion>ErrorLog /var/log/placement/placement-api.log#SSLEngine On#SSLCertificateFile ...#SSLCertificateKeyFile ...
</VirtualHost>Alias /placement-api /usr/bin/placement-api
<Location /placement-api>SetHandler wsgi-scriptOptions +ExecCGIWSGIProcessGroup placement-apiWSGIApplicationGroup %{GLOBAL}WSGIPassAuthorization On
</Location>
<Directory /usr/bin> //此处是bug，必须添加下面的配置来启用对placement api的访问，否则在访问apache的
<IfVersion >= 2.4> //api时会报403；添加在文件的最后即可Require all granted
</IfVersion>
<IfVersion < 2.4> //apache版本；允许apache访问/usr/bin目录；否则/usr/bin/placement-api将不允许被
访问Order allow,deny Allow from all //允许apache访问
</IfVersion>
</Directory>
9. 重新启动apache
[root@ct ~]# systemctl restart httpd
10. 测试
① curl 测试访问
[root@ct placement]# curl ct: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@ct placement]# netstat -natp | grep 8778
tcp6 0 0 :::8778 :::* LISTEN 72994/httpd
③ 检查placement状态
[root@ct ~]# placement-status upgrade check
+----------------------------------+
| Upgrade Check Results |
+----------------------------------+
| Check: Missing Root Provider IDs |
| Result: Success |
| Details: None |
+----------------------------------+
| Check: Incomplete Consumers |
| Result: Success |
| Details: None |
+----------------------------------+
至此，placement部署完成
总结
- 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)。
- 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
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
需修改的配置文件：
- placement.conf
主要修改思路：
Keystone认证相关（url、HOST:PORT、域、账号密码等）
对接数据库（位置） - 00-placement-api.conf
主要修改思路：
Apache权限、访问控制
