Install and configure for Red Hat Enterprise Linux and CentOS¶

Prerequisites¶

Before you install and configure the Telemetry service, you must create a database, service credentials, and API endpoints.

1. To create the database, complete these steps:

   • Use the database access client to connect to the database server as the root user:

     $ mysql -u root -p
     

   • Create the aodh database:

     CREATE DATABASE aodh;
     

   • Grant proper access to the aodh database:

     GRANT ALL PRIVILEGES ON aodh.* TO 'aodh'@'localhost' \
       IDENTIFIED BY 'AODH_DBPASS';
     GRANT ALL PRIVILEGES ON aodh.* TO 'aodh'@'%' \
       IDENTIFIED BY 'AODH_DBPASS';
     

     Replace AODH_DBPASS with a suitable password.

   • Exit the database access client.

2. Source the admin credentials to gain access to admin-only CLI commands:

   $ . admin-openrc
   

3. To create the service credentials, complete these steps:

   • Create the aodh user:

     $ openstack user create --domain default \
       --password-prompt aodh
     User Password:
     Repeat User Password:
     +-----------+----------------------------------+
     | Field     | Value                            |
     +-----------+----------------------------------+
     | domain_id | e0353a670a9e496da891347c589539e9 |
     | enabled   | True                             |
     | id        | b7657c9ea07a4556aef5d34cf70713a3 |
     | name      | aodh                             |
     +-----------+----------------------------------+
     

   • Add the admin role to the aodh user:

     $ openstack role add --project service --user aodh admin
     

     Note

     This command provides no output.

   • Create the aodh service entity:

     $ openstack service create --name aodh \
       --description "Telemetry" alarming
     +-------------+----------------------------------+
     | Field       | Value                            |
     +-------------+----------------------------------+
     | description | Telemetry                        |
     | enabled     | True                             |
     | id          | 3405453b14da441ebb258edfeba96d83 |
     | name        | aodh                             |
     | type        | alarming                         |
     +-------------+----------------------------------+
     

4. Create the Alarming service API endpoints:

   $ openstack endpoint create --region RegionOne \
     alarming public http://controller:8042
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | 340be3625e9b4239a6415d034e98aace |
     | interface    | public                           |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
     | service_name | aodh                             |
     | service_type | alarming                         |
     | url          | http://controller:8042           |
     +--------------+----------------------------------+
   
   $ openstack endpoint create --region RegionOne \
     alarming internal http://controller:8042
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | 340be3625e9b4239a6415d034e98aace |
     | interface    | internal                         |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
     | service_name | aodh                             |
     | service_type | alarming                         |
     | url          | http://controller:8042           |
     +--------------+----------------------------------+
   
   $ openstack endpoint create --region RegionOne \
     alarming admin http://controller:8042
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | 340be3625e9b4239a6415d034e98aace |
     | interface    | admin                            |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
     | service_name | aodh                             |
     | service_type | alarming                         |
     | url          | http://controller:8042           |
     +--------------+----------------------------------+
   

Install and configure components¶

1. Install the packages:

   # yum install openstack-aodh-api \
     openstack-aodh-evaluator openstack-aodh-notifier \
     openstack-aodh-listener openstack-aodh-expirer \
     python-aodhclient
   

2. Edit the /etc/aodh/aodh.conf file and complete the following actions:

   • In the [database] section, configure database access:

     [database]
     ...
     connection = mysql+pymysql://aodh:AODH_DBPASS@controller/aodh
     

     Replace AODH_DBPASS with the password you chose for the Telemetry Alarming module database. You must escape special characters such as :, /, +, and @ in the connection string in accordance with RFC2396.

   • In the [DEFAULT] section, configure RabbitMQ message queue access:

     [DEFAULT]
     ...
     transport_url = rabbit://openstack:RABBIT_PASS@controller
     

     Replace RABBIT_PASS with the password you chose for the openstack account in RabbitMQ.

   • In the [DEFAULT] and [keystone_authtoken] sections, configure Identity service access:

     [DEFAULT]
     ...
     auth_strategy = keystone
     
     [keystone_authtoken]
     ...
     auth_uri = http://controller:5000
     auth_url = http://controller:35357
     memcached_servers = controller:11211
     auth_type = password
     project_domain_id = default
     user_domain_id = default
     project_name = service
     username = aodh
     password = AODH_PASS
     

     Replace AODH_PASS with the password you chose for the aodh user in the Identity service.

   • In the [service_credentials] section, configure service credentials:

     [service_credentials]
     ...
     auth_type = password
     auth_url = http://controller:5000/v3
     project_domain_id = default
     user_domain_id = default
     project_name = service
     username = aodh
     password = AODH_PASS
     interface = internalURL
     region_name = RegionOne
     

     Replace AODH_PASS with the password you chose for the aodh user in the Identity service.

3. In order to initialize the database please run the aodh-dbsync script.

Finalize installation¶

1. Start the Telemetry Alarming services and configure them to start when the system boots:

   # systemctl enable openstack-aodh-api.service \
     openstack-aodh-evaluator.service \
     openstack-aodh-notifier.service \
     openstack-aodh-listener.service
   # systemctl start openstack-aodh-api.service \
     openstack-aodh-evaluator.service \
     openstack-aodh-notifier.service \
     openstack-aodh-listener.service