COA Monitoring & Reporting Tools 2

Question 1

Which OpenStack service provides an API for querying metering data collected by Ceilometer?

Accepted Answer

Gnocchi

Answer

Gnocchi is the time-series database service that replaced Ceilometer's storage backend and provides an API for querying metering data.

Question 2

What command lists all available Ceilometer meters for a specific project?

Accepted Answer

ceilometer meter-list --project-id <id>

Answer

The 'ceilometer meter-list --project-id <id>' command lists all meters available for a given project.

Question 3

In Gnocchi, what is an 'archive policy' used for?

Accepted Answer

Setting the granularity and retention period for time-series metrics

Answer

An archive policy in Gnocchi defines the granularity (e.g., 5-minute intervals) and retention duration for stored time-series metrics.

Question 4

Which OpenStack component is specifically responsible for event storage and querying (as opposed to metric/sample storage)?

Accepted Answer

Panko

Answer

Panko is the OpenStack event storage service, handling discrete events rather than continuous time-series metrics.

Question 5

When configuring Ceilometer to use Gnocchi as its backend, which configuration file section must be updated on the Ceilometer agent nodes?

Accepted Answer

[dispatcher_gnocchi]

Answer

The [dispatcher_gnocchi] section in ceilometer.conf must be configured to point Ceilometer at the Gnocchi endpoint.

(COA) Certified OpenStack Administrator Exam Practice Test