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OpenStack Rocky : Aodh 設定
2018/09/06
 
OpenStack Alarming Service (Aodh) をインストールします。
当例では以下のような環境を例に Control ノードへ Aodh サービス一式をインストールします。
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Storage Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |      Open vSwitch     |   |        Libvirt        |
|  Memcached  httpd     |   |        L2 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |        L3 Agent       |   |      Open vSwitch     |
|  Nova API  Cinder API |   |     Metadata Agent    |   |        L2 Agent       |
|  Neutron Server       |   |     Cinder Volume     |   |  Ceilometer Compute   |
|  Metadata Agent       |   |        Heat API       |   |                       |
|  Gnocchi              |   |      Heat Engine      |   |                       |
|  Ceilometer Central   |   |                       |   |                       |
|  Aodh Evaluator       |   |                       |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1]
事前に Gnocchi および Ceilometer をインストールしておきます。
[2] Control ノードの Keystone に Aodh 用のユーザー等々を登録しておきます。
# aodh ユーザー作成 (service プロジェクト所属)

[root@dlp ~(keystone)]#
openstack user create --domain default --project service --password servicepassword aodh

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | ece4ac6c7e764a979e36ba0b2faf848e |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | ef3a4fd9be904e11987a03133b3121a0 |
| name                | aodh                             |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

# aodh ユーザーを admin ロール に加える

[root@dlp ~(keystone)]#
openstack role add --project service --user aodh admin
# aodh 用サービスエントリ作成

[root@dlp ~(keystone)]#
openstack service create --name aodh --description "Telemetry Alarming" alarming

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Telemetry Alarming               |
| enabled     | True                             |
| id          | 2ff8842b9f654c69b702097a4f6285f8 |
| name        | aodh                             |
| type        | alarming                         |
+-------------+----------------------------------+

# Aodh API ホストを定義しておく

[root@dlp ~(keystone)]#
export controller=10.0.0.30
# aodh 用エンドポイント作成 (public)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming public http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | b26e6d94d0c34c2d8d9fbc7dd23153e4 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2ff8842b9f654c69b702097a4f6285f8 |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+

# aodh 用エンドポイント作成 (internal)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming internal http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 9f61b6053cb84495b1c7c8e69690e815 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2ff8842b9f654c69b702097a4f6285f8 |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+

# aodh 用エンドポイント作成 (admin)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming admin http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 65b8dd399efb4d068da9425e506ff294 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2ff8842b9f654c69b702097a4f6285f8 |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+
[3] Aodh 用のユーザーとデータベースを MariaDB に登録しておきます。
[root@dlp ~(keystone)]#
mysql -u root -p

Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 71
Server version: 10.1.20-MariaDB MariaDB Server

Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>
create database aodh;

Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on aodh.* to aodh@'localhost' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on aodh.* to aodh@'%' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
flush privileges;

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
exit

Bye
[4] Aodh サービスをインストールします。
# Rocky, EPEL からインストール

[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-rocky,epel -y install openstack-aodh-api openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener openstack-aodh-expirer python2-aodhclient
[5] Aodh の基本設定です。
[root@dlp ~(keystone)]#
mv /etc/aodh/aodh.conf /etc/aodh/aodh.conf.org

[root@dlp ~(keystone)]#
vi /etc/aodh/aodh.conf
# 新規作成

[DEFAULT]
log_dir = /var/log/aodh
# RabbitMQ 接続情報
transport_url = rabbit://openstack:password@10.0.0.30

[api]
auth_mode = keystone
gnocchi_external_project_owner = service

[database]
# MariaDB 接続情報
connection = mysql+pymysql://aodh:password@10.0.0.30/aodh

# Keystone 認証情報
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = aodh
password = servicepassword

[service_credentials]
auth_url = http://10.0.0.30:5000/v3
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = aodh
password = servicepassword
interface = internalURL

[root@dlp ~(keystone)]#
vi /etc/httpd/conf.d/20-aodh_wsgi.conf
# 新規作成

Listen 8042
<VirtualHost *:8042>
    <Directory /usr/bin>
        AllowOverride None
        Require all granted
    </Directory>

    CustomLog "/var/log/httpd/aodh_wsgi_access.log" combined
    ErrorLog "/var/log/httpd/aodh_wsgi_error.log"
    SetEnvIf X-Forwarded-Proto https HTTPS=1
    WSGIApplicationGroup %{GLOBAL}
    WSGIDaemonProcess aodh display-name=aodh_wsgi user=aodh group=aodh processes=6 threads=3
    WSGIProcessGroup aodh
    WSGIScriptAlias / /usr/bin/aodh-api
</VirtualHost>

[root@dlp ~(keystone)]#
chmod 640 /etc/aodh/aodh.conf

[root@dlp ~(keystone)]#
chgrp aodh /etc/aodh/aodh.conf

[root@dlp ~(keystone)]#
su -s /bin/bash aodh -c "aodh-dbsync"

[root@dlp ~(keystone)]#
systemctl start openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener

[root@dlp ~(keystone)]#
systemctl enable openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener

[root@dlp ~(keystone)]#
systemctl restart httpd

[6] SELinux を有効にしている場合は、ポリシーの変更が必要です。
[root@dlp ~(keystone)]#
semanage port -a -t http_port_t -p tcp 8042

[7] Firewalld を有効にしている場合は、サービスポートの許可が必要です。
[root@dlp ~(keystone)]#
firewall-cmd --add-port=8042/tcp --permanent

success
[root@dlp ~(keystone)]#
firewall-cmd --reload

success
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