Install and configure¶

This section describes how to install and configure the Telemetry service, code-named ceilometer, on the controller node. The Telemetry service collects measurements from most OpenStack services and optionally triggers alarms.

Prerequisites¶

Before you install and configure the Telemetry service, you must create a database, service credentials, and API endpoints. However, unlike other services, the Telemetry service uses a NoSQL database. See NoSQL database to install and configure MongoDB before proceeding further.

Create the ceilometer database:

# mongo --host controller --eval '
  db = db.getSiblingDB("ceilometer");
  db.createUser({user: "ceilometer",
  pwd: "CEILOMETER_DBPASS",
  roles: [ "readWrite", "dbAdmin" ]})'

MongoDB shell version: 2.6.x
connecting to: controller:27017/test
Successfully added user: { "user" : "ceilometer", "roles" : [ "readWrite", "dbAdmin" ] }

Replace CEILOMETER_DBPASS with a suitable password.

Source the admin credentials to gain access to admin-only CLI commands:
```
$ source admin-openrc.sh
```

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 | default                          |
| 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                         |
+-------------+----------------------------------+

Create the Telemetry service API endpoints:

$ openstack endpoint create --region RegionOne \
  metering public http://controller:8777
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | b808b67b848d443e9eaaa5e5d796970c |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 5fb7fd1bb2954fddb378d4031c28c0e4 |
| service_name | ceilometer                       |
| service_type | metering                         |
| url          | http://controller:8777           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  metering internal http://controller:8777
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | c7009b1c2ee54b71b771fa3d0ae4f948 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 5fb7fd1bb2954fddb378d4031c28c0e4 |
| service_name | ceilometer                       |
| service_type | metering                         |
| url          | http://controller:8777           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  metering admin http://controller:8777
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | b2c00566d0604551b5fe1540c699db3d |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 5fb7fd1bb2954fddb378d4031c28c0e4 |
| service_name | ceilometer                       |
| service_type | metering                         |
| url          | http://controller:8777           |
+--------------+----------------------------------+

Install and configure components¶

Install the packages:

# yum install openstack-ceilometer-api \
  openstack-ceilometer-collector openstack-ceilometer-notification \
  openstack-ceilometer-central openstack-ceilometer-alarm \
  python-ceilometerclient

Edit the /etc/ceilometer/ceilometer.conf file and complete the following actions:
- In the [database] section, configure database access:
```
[database]
...
connection = mongodb://ceilometer:CEILOMETER_DBPASS@controller:27017/ceilometer
```
  Replace CEILOMETER_DBPASS with the password you chose for the Telemetry service database. You must escape special characters such as ‘:’, ‘/’, ‘+’, and ‘@’ in the connection string in accordance with RFC2396.
- In the [DEFAULT] and [oslo_messaging_rabbit] sections, configure RabbitMQ message queue access:
```
[DEFAULT]
...
rpc_backend = rabbit

[oslo_messaging_rabbit]
...
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS
```
  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
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = ceilometer
password = CEILOMETER_PASS
```
  Replace CEILOMETER_PASS with the password you chose for the ceilometer user in the Identity service.
- In the [service_credentials] section, configure service credentials:
```
[service_credentials]
...
os_auth_url = http://controller:5000/v2.0
os_username = ceilometer
os_tenant_name = service
os_password = CEILOMETER_PASS
os_endpoint_type = internalURL
os_region_name = RegionOne
```
  Replace CEILOMETER_PASS with the password you chose for the ceilometer user in the Identity service.
- (Optional) To assist with troubleshooting, enable verbose logging in the [DEFAULT] section:
```
[DEFAULT]
...
verbose = True
```

Finalize installation¶

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

# systemctl enable openstack-ceilometer-api.service \
  openstack-ceilometer-notification.service \
  openstack-ceilometer-central.service \
  openstack-ceilometer-collector.service \
  openstack-ceilometer-alarm-evaluator.service \
  openstack-ceilometer-alarm-notifier.service
# systemctl start openstack-ceilometer-api.service \
  openstack-ceilometer-notification.service \
  openstack-ceilometer-central.service \
  openstack-ceilometer-collector.service \
  openstack-ceilometer-alarm-evaluator.service \
  openstack-ceilometer-alarm-notifier.service

Install and configure

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