Install and configure for Red Hat Enterprise Linux and CentOS¶

Prerequisites¶

Before you install and configure the Telemetry service, you must configure a target to send metering data to. The recommended endpoint is Gnocchi.

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

   $ . admin-openrc
   

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

   • Create the ceilometer user:

     $ openstack user create --domain default --password-prompt ceilometer
     User Password:
     Repeat User Password:
     +-----------+----------------------------------+
     | Field     | Value                            |
     +-----------+----------------------------------+
     | domain_id | e0353a670a9e496da891347c589539e9 |
     | enabled   | True                             |
     | id        | c859c96f57bd4989a8ea1a0b1d8ff7cd |
     | name      | ceilometer                       |
     +-----------+----------------------------------+
     

   • Add the admin role to the ceilometer user.

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

     Note

     This command provides no output.

   • Create the ceilometer service entity:

     $ openstack service create --name ceilometer \
       --description "Telemetry" metering
     +-------------+----------------------------------+
     | Field       | Value                            |
     +-------------+----------------------------------+
     | description | Telemetry                        |
     | enabled     | True                             |
     | id          | 5fb7fd1bb2954fddb378d4031c28c0e4 |
     | name        | ceilometer                       |
     | type        | metering                         |
     +-------------+----------------------------------+
     

3. Register Gnocchi service in Keystone:

   • Create the gnocchi user:

     $ openstack user create --domain default --password-prompt gnocchi
     User Password:
     Repeat User Password:
     +-----------+----------------------------------+
     | Field     | Value                            |
     +-----------+----------------------------------+
     | domain_id | e0353a670a9e496da891347c589539e9 |
     | enabled   | True                             |
     | id        | 8bacd064f6434ef2b6bbfbedb79b0318 |
     | name      | gnocchi                          |
     +-----------+----------------------------------+
     

   • Create the gnocchi service entity:

     $ openstack service create --name gnocchi \
       --description "Metric Service" metric
     +-------------+----------------------------------+
     | Field       | Value                            |
     +-------------+----------------------------------+
     | description | Metric Service                   |
     | enabled     | True                             |
     | id          | 205978b411674e5a9990428f81d69384 |
     | name        | gnocchi                          |
     | type        | metric                           |
     +-------------+----------------------------------+
     

   • Create the Metric service API endpoints:

     $ openstack endpoint create --region RegionOne \
       metric public http://controller:8041
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | b808b67b848d443e9eaaa5e5d796970c |
     | interface    | public                           |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 205978b411674e5a9990428f81d69384 |
     | service_name | gnocchi                          |
     | service_type | metric                           |
     | url          | http://controller:8041           |
     +--------------+----------------------------------+
     
     $ openstack endpoint create --region RegionOne \
       metric internal http://controller:8041
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | c7009b1c2ee54b71b771fa3d0ae4f948 |
     | interface    | internal                         |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 205978b411674e5a9990428f81d69384 |
     | service_name | gnocchi                          |
     | service_type | metric                           |
     | url          | http://controller:8041           |
     +--------------+----------------------------------+
     
     $ openstack endpoint create --region RegionOne \
       metric admin http://controller:8041
     +--------------+----------------------------------+
     | Field        | Value                            |
     +--------------+----------------------------------+
     | enabled      | True                             |
     | id           | b2c00566d0604551b5fe1540c699db3d |
     | interface    | admin                            |
     | region       | RegionOne                        |
     | region_id    | RegionOne                        |
     | service_id   | 205978b411674e5a9990428f81d69384 |
     | service_name | gnocchi                          |
     | service_type | metric                           |
     | url          | http://controller:8041           |
     +--------------+----------------------------------+
     

Install Gnocchi¶

1. Install the Gnocchi packages. Alternatively, Gnocchi can be install using pip:

   # yum install openstack-gnocchi-api openstack-gnocchi-metricd \
     python-gnocchiclient
   

   Note

   Depending on your environment size, consider installing Gnocchi separately as it makes extensive use of the cpu.

2. Create the database for Gnocchi’s indexer:

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

     $ mysql -u root -p
     

   • Create the gnocchi database:

     CREATE DATABASE gnocchi;
     

   • Grant proper access to the gnocchi database:

     GRANT ALL PRIVILEGES ON gnocchi.* TO 'gnocchi'@'localhost' \
       IDENTIFIED BY 'GNOCCHI_DBPASS';
     GRANT ALL PRIVILEGES ON gnocchi.* TO 'gnocchi'@'%' \
       IDENTIFIED BY 'GNOCCHI_DBPASS';
     

     Replace GNOCCHI_DBPASS with a suitable password.

   • Exit the database access client.

3. Edit the /etc/gnocchi/gnocchi.conf file and add Keystone options:

   • In the [api] section, configure gnocchi to use keystone:

     [api]
     auth_mode = keystone
     

   • In the [keystone_authtoken] section, configure keystone authentication:

     [keystone_authtoken]
     ...
     auth_type = password
     auth_url = http://controller:5000/v3
     project_domain_name = Default
     user_domain_name = Default
     project_name = service
     username = gnocchi
     password = GNOCCHI_PASS
     interface = internalURL
     region_name = RegionOne
     

     Replace GNOCCHI_PASS with the password you chose for the gnocchi user in the Identity service.

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

     [indexer]
     url = mysql+pymysql://gnocchi:GNOCCHI_DBPASS@controller/gnocchi
     

     Replace GNOCCHI_DBPASS with the password you chose for Gnocchi’s indexer database.

   • In the [storage] section, configure location to store metric data. In this case, we will store it to the local file system. See Gnocchi documenation for a list of more durable and performant drivers:

     [storage]
     coordination_url = redis://controller:6379
     file_basepath = /var/lib/gnocchi
     driver = file
     

4. Initialize Gnocchi:

   gnocchi-upgrade
   

Finalize Gnocchi installation¶

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

   # systemctl enable openstack-gnocchi-api.service \
     openstack-gnocchi-metricd.service
   # systemctl start openstack-gnocchi-api.service \
     openstack-gnocchi-metricd.service
   

Install and configure components¶

1. Install the Ceilometer packages:

   # yum install
     openstack-ceilometer-collector openstack-ceilometer-notification \
     openstack-ceilometer-central
   

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

   • Configure Gnocchi connection:

     [DEFAULT]
     ...
     meter_dispatchers=gnocchi
     event_dispatchers=gnocchi
     
     [dispatcher_gnocchi]
     # filter out Gnocchi-related activity meters (Swift driver)
     filter_service_activity = False
     # default metric storage archival policy
     archive_policy = low
     

     Note

     It is possible forego the collector service by modifying the pipeline.yaml to use the gnocchi:// publisher rather than notifier://. Doing so will minimise resource requirements. In this case, dispatchers do not need to be added to conf file.

   • 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 [service_credentials] section, configure service credentials:

     [service_credentials]
     ...
     auth_type = password
     auth_url = http://controller:5000/v3
     project_domain_name = default
     user_domain_name = default
     project_name = service
     username = ceilometer
     password = CEILOMETER_PASS
     interface = internalURL
     region_name = RegionOne
     

     Replace CEILOMETER_PASS with the password you chose for the ceilometer user in the Identity service.

3. Create Ceilometer resources in Gnocchi. Gnocchi should be running by this stage:

   # ceilometer-upgrade --skip-metering-database
   

Finalize installation¶

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

   # systemctl enable openstack-ceilometer-notification.service \
     openstack-ceilometer-central.service \
     openstack-ceilometer-collector.service
   # systemctl start openstack-ceilometer-notification.service \
     openstack-ceilometer-central.service \
     openstack-ceilometer-collector.service