OpenStack项目四--放置服务安装（placement)

这是本人的一些学习笔记，如果有错误的地方或者更好的解决方法，欢迎提出！！

openstack项目的 Placement 服务是一个用于监控平台中所有硬件资源使用情况的组件。它的主要作用是跟踪资源的使用情况，并将这些资源的统计信息写入到数据库中。主要组成是它的接口模块，这个模块监控系统资源信息，也可以被其他 OpenStack 服务调用，以便能够更好地管理和分配资源。

1.安装placement服务

[root@openstack01 ~]# yum install -y openstack-placement-api

  检查placement有没有成功安装

[root@openstack01 ~]# cat /etc/passwd | grep placement
placement:x:991:988:OpenStack Placement:/:/bin/bash
[root@openstack01 ~]# cat /etc/group | grep placement
placement:x:988:

2.修改placement服务的配置文件

生成备份文件

[root@openstack01 ~]# cp /etc/placement/placement.conf /etc/placement/placement.conf.bak

去除空行注释，生成新的配置文件，方便修改

[root@openstack01 ~]# grep -Ev '^$|#' /etc/placement/placement.conf.bak > /etc/placement/placement.conf

打开去除空行注释的配置文件进行修改

root@openstack01 ~]# vi /etc/placement/placement.conf
[root@openstack01 ~]# cat /etc/placement/placement.conf
[DEFAULT]
[api]
[cors]
[keystone_authtoken]
auth_url=http://openstack01:5000
memcached_servers=openstack:11211
auth_type=password
username=placement
password=000000
project_name=project
user_domain_name=Default
project_domain_name=Default
[oslo_policy]
[placement]
[placement_database]
connection=mysql+pymysql://placement:000000@openstack01/placement
[profiler]

3.修改Apache服务配置文件

在</VirtualHost>节点下加入以下代码

<Directory /usr/bin>
  <IfVersion >= 2.4>
    Require all granted
  </IfVersion>
</Directory>

4.创建placement数据库并授权

MariaDB [(none)]> create database placement;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> grant all privileges on placement.* to 'placement'@'%' identified by '000000';
Query OK, 0 rows affected (0.001 sec)

MariaDB [(none)]> grant all privileges on placement.* to 'placement'@'localhost' identified by '000000';
Query OK, 0 rows affected (0.001 sec)

5.初始化placement数据库

[root@openstack01 ~]# su placement -s /bin/sh -c 'placement-manage db sync'

检查数据库是否同步成功

6.初始化placement组件

导入环境变量

[root@openstack01 ~]# . admin-login

在云计算平台中创建placement用户

[root@openstack01 ~]# openstack user create placement --domain default --password 000000
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 23e1c6b1043640d58e556aacd6338c9c |
| name                | placement                        |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

为用户placement分配管理员角色

[root@openstack01 ~]# openstack role add admin --project project --user placement

创建placement放置服务

[root@openstack01 ~]# openstack service create --name placement placement
+---------+----------------------------------+
| Field   | Value                            |
+---------+----------------------------------+
| enabled | True                             |
| id      | f5648dfaaef847b4b97af7208a9c67ce |
| name    | placement                        |
| type    | placement                        |
+---------+----------------------------------+

创建placement对外服务端点

[root@openstack01 ~]# openstack endpoint create --region RegionOne placement public http://openstack01:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 56397a2729ff45878f1687feca4d1799 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | f5648dfaaef847b4b97af7208a9c67ce |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://openstack01:8778          |
+--------------+----------------------------------+

创建placement对内服务端点

[root@openstack01 ~]# openstack endpoint create --region RegionOne placement internal http://openstack01:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | aa806a125cf048a78edbae55419fe32d |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | f5648dfaaef847b4b97af7208a9c67ce |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://openstack01:8778          |
+--------------+----------------------------------+

创建placement对管理员访问的端点

[root@openstack01 ~]# openstack endpoint create --region RegionOne placement admin http://openstack01:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 0e3eb4950b344e9091df5082ad00492c |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | f5648dfaaef847b4b97af7208a9c67ce |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://openstack01:8778          |
+--------------+----------------------------------+

7.启动placement服务

[root@openstack01 conf.d]# systemctl restart httpd

验证placement服务是否开启

[root@openstack01 conf.d]# ss -lntpu | grep 8778
tcp    LISTEN     0      128      :::8778                 :::*                   users:(("httpd",pid=15799,fd=6),("httpd",pid=15798,fd=6),("httpd",pid=15797,fd=6),("httpd",pid=15796,fd=6),("httpd",pid=15795,fd=6),("httpd",pid=15786,fd=6))

至此，openstack中的placement服务安装配置完成