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Monitoring the state of Yandex Data Processing clusters and hosts

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Updated at October 28, 2024

You can track the state of a Yandex Data Processing cluster and its individual hosts with the monitoring tools in the management console. These tools display diagnostic information as charts.

To get started with Monitoring metrics, dashboards, or alerts, click Open in Monitoring in the top panel.

Chart update rate:

  • Standard hosts and hosts with an increased RAM to vCPU ratio (memory-optimized): 15 seconds.
  • Hosts with a guaranteed vCPU share under 100% (burstable): 150 seconds.

Note

The most appropriate multiple units (MB, GB, and more) are automatically used in charts.

Monitoring cluster state

To view detailed information about the Yandex Data Processing cluster state:

  1. Go to the folder page and select Yandex Data Processing.
  2. Click the cluster name and open the Monitoring tab.

The tab displays the following charts:

  • Active nodes: Number of running hosts (other than master hosts).
  • Apps failed: Number of applications with runtime errors.
  • Available RAM: Amount of free RAM (in bytes) available in YARN for hosts in data storage and processing subclusters.
  • Available virtual cores: Number of cores available in YARN.
  • Containers pending: Number of containers waiting to be launched by the YARN Resource Manager.
  • Decommissioned nodes: Number of hosts that have been decommissioned.

Monitoring the state of hosts

To view detailed information about the state of individual Yandex Data Processing hosts:

  1. Go to the folder page and select Yandex Data Processing.
  2. Click the cluster name and open the Hosts tab.
  3. Open the VM of the host you want to monitor and select the Monitoring tab.

The tab displays charts with information on VM resource usage:

  • CPU Utilization: Processor core workload.
  • Connections quota utilization: Percentage of the available host connections utilized.
  • Disk bytes: Storage read and write speed (bytes per second).
  • Disk operations: Disk activity (ops per second).
  • Network bytes: Speed of data exchange over the network, in bytes per second.
  • Network packets: Number of packets exchanged over the network, per second.

Integration with Yandex Monitoring

To configure cluster and host state metric alerts:

  1. In the management console, select the folder with the cluster you want to configure alerts for.
  2. In the list of services, select  Monitoring.
  3. Under Service dashboards, select Yandex Data Processing.
  4. In the chart with metrics, click and select Create alert.
  5. If the chart shows multiple metrics, select a data query to generate a metric and click Continue. For more information about the query language, see the Yandex Monitoring documentation.
  6. Set the Alarm and Warning thresholds for notifications.
  7. Click Create.

To have other cluster health indicators monitored automatically:

  1. Create an alert.
  2. Add a status metric.
  3. In the alert parameters, set up your alert thresholds.

For a complete list of supported metrics, see the Monitoring documentation.

Cluster state and status

The State of a cluster shows the health of its hosts, while the Status shows whether the cluster is started, stopped, or is at an intermediate stage.

To view a cluster's state and status:

  1. Go to the folder page and select Yandex Data Processing.
  2. Hover over the indicator in the Availability column in the required cluster row.

Cluster states

State Description Suggested actions
ALIVE Cluster is operating normally. No action is required.
DEGRADED Cluster is not running at its full capacity: the state of at least one of the hosts is other than ALIVE. Run the diagnostics:
  • Go to the Hosts tab and see which hosts are not working.
  • Go to the Operations tab and make sure all operations are completed.
  • Make sure the cluster is not under maintenance.
If you cannot find the cause yourself, contact support.
DEAD The cluster is down: none of its hosts are running. Make a support request stating the following:
  • Cluster ID.
  • IDs of the last operations performed on it.
  • Time the cluster entered the DEAD state according to the availability charts.
UNKNOWN Cluster state is unknown. Make a support request stating the following:
  • Cluster ID.
  • IDs of the last operations performed on it.
  • Time the cluster entered the UNKNOWN state according to the availability charts.

Cluster statuses

Status Description Suggested actions
CREATING Preparing for the first launch Wait a while and get started. The time it takes to create a cluster depends on the host class.
RUNNING Cluster is operating normally No action is required.
STOPPING Stopping cluster After a while, the cluster status will change to STOPPED and the cluster will be disabled. No action is required.
STOPPED Cluster stopped Start the cluster to get it running again.
STARTING Starting the cluster that was stopped earlier After a while, the cluster status will change to RUNNING. Wait a while and get started.
UPDATING Updating the cluster status After the update is completed, the cluster status will change to RUNNING. Wait a while and get started.
ERROR An error occurred that does not allow the cluster to continue working Run the initial diagnostics:
  • Analyze the cluster monitoring charts and view the operations performed.
  • Prepare a list of IDs of problem resources.
If you cannot find the cause of the error yourself, contact support.
STATUS_UNKNOWN Cluster is unable to determine its own status Run the initial diagnostics:
  • Analyze the cluster monitoring charts and view the operations performed.
  • Prepare a list of IDs of problem resources.
If you cannot find the cause of the error yourself, contact support.
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