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Monitoring & Reporting Tools Flashcards

7 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. In Aodh, which alarm type triggers when a Gnocchi metric crosses a defined threshold?

    Answer: gnocchi_resources_threshold

    The 'gnocchi_resources_threshold' alarm type in Aodh evaluates Gnocchi metric values against a threshold to trigger alarms.

  2. Which OpenStack CLI command creates an Aodh alarm that fires when CPU utilization exceeds 80%?

    Answer: openstack alarm create --type gnocchi_resources_threshold --metric cpu_util --threshold 80

    The 'openstack alarm create --type gnocchi_resources_threshold' command with --metric and --threshold flags creates a CPU utilization alarm in Aodh.

  3. What does the 'openstack metric resource list' command display?

    Answer: All resources tracked in Gnocchi with their associated metrics

    The 'openstack metric resource list' command shows all resources registered in Gnocchi along with the metrics associated with each.

  4. Which Ceilometer pipeline configuration file defines how samples are transformed and published?

    Answer: pipeline.yaml

    The pipeline.yaml file defines Ceilometer's sources, sinks, transformers, and publishers for processing collected samples.

  5. What is the role of 'Monasca' in an OpenStack environment compared to Ceilometer?

    Answer: Monasca is a monitoring-as-a-service solution designed for high-scale, multi-tenant metric collection

    Monasca is a high-performance, multi-tenant monitoring-as-a-service solution that can complement or replace Ceilometer in large-scale OpenStack deployments.

  6. Which command shows the alarm history for a specific Aodh alarm?

    Answer: aodh alarm-history list

    The 'aodh alarm-history list ' command retrieves the state transition history for a specified Aodh alarm.

  7. What happens to an Aodh alarm when its state changes from 'ok' to 'alarm'?

    Answer: The configured alarm action (e.g., webhook URL or Heat scaling policy) is triggered

    When an Aodh alarm transitions to the 'alarm' state, it executes its configured alarm actions such as calling a webhook URL or triggering a Heat auto-scaling policy.