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                           |
     +-------------+----------------------------------+
     

   • Add the admin role to the gnocchi user.

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

     Note

     This command provides no output.

   • 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. Install the uWSGI packages. The following method uses operating system provided packages. Another alternative would be to use pip(or pip3, depending on the distribution); using pip is not described in this doc:

   # yum install uwsgi-plugin-common uwsgi-plugin-python3 uwsgi
   

   Note

   Since the provided gnocchi-api wraps around uwsgi, you need to make sure that uWSGI is installed if you want to use gnocchi-api to run Gnocchi API. As Gnocchi API tier runs using WSGI, it can also alternatively be run using Apache httpd and mod_wsgi, or any other HTTP daemon.

3. 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.

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

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

     [api]
     auth_mode = keystone
     port = 8041
     uwsgi_mode = http-socket
     

   • 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 is not required but specifying one will improve
     # performance with better workload division across workers.
     coordination_url = redis://controller:6379
     file_basepath = /var/lib/gnocchi
     driver = file
     

5. 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-notification \
     openstack-ceilometer-central
   

2. Edit the /etc/ceilometer/pipeline.yaml file and complete the following section:

   • Configure Gnocchi connection:

     publishers:
         # set address of Gnocchi
         # + filter out Gnocchi-related activity meters (Swift driver)
         # + set default archive policy
         - gnocchi://?filter_project=service&archive_policy=low
     

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

   • 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_id = default
     user_domain_id = 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.

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

   # ceilometer-upgrade
   

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