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Getting started with application logs

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Updated at May 7, 2026

Monium Logs is a distributed and highly available system for storing, searching, visualizing, and analyzing logs. The system forms part of the Monium platform and uses its basic components, such as access management, data model, and unified interface.

This section provides general information about transferring logs from your app to Monium and viewing them.

For Yandex Cloud resources, see Getting started with Yandex Cloud resource logs.

Log delivery

If you are new to Yandex Cloud or have no application to test sending logs from, visit Getting started with Monium. The section describes the basic environment setup and sending telemetry data with the help of Otel Collector.

In Monium, log delivery is configured similarly to other types of telemetry. Data is received in OpenTelemetry format; therefore, you can send logs either using an agent or collector that supports it or send directly from the application.

If your cloud and application are already configured and you have prior experience with telemetry, configure log delivery as detailed below.

Monium.Logs parameters

  • Monium accepts data in OpenTelemetry (OTLP) format.

  • Address for writing logs: ingest.monium.yandex.cloud:443.

  • Authentication:

    • Service account with the monium.logs.writer role or common monium.telemetry.writer role.
    • API key with the yc.monium.logs.write or yc.monium.telemetry.write scope.

  • In header: x-monium-project=<project_ID> parameter.

    This may be a cloud (cloud__<cloud_ID>) project, folder (folder__<folder_ID>) project, or another project.

  • In OTEL_RESOURCE_ATTRIBUTES: cluster or deployment.name and service or service.name.

    If no cluster is specified, the default option is cluster = default.

Viewing logs

  1. On the Monium home page, select Logs on the left.

  2. At the top, set the data search period on the timeline.

  3. In the search bar, enter a query to search for application logs:

    • project = <project_ID>: Select the project specified in x-monium-project of the application's telemetry transmission configuration.

      This may be a cloud (cloud__<cloud_ID>) project, folder (folder__<folder_ID>) project, or another project.

    • cluster = <cluster_name>: Select the name of the installation that runs your application. If no cluster is specified, cluster = default is used.

    • service = <service_name>: Name of your application or service. You can use the OTEL_SERVICE_NAME environment variable to provide it.

      If you do not see the required labels in the suggestions, you can enter them manually. However, the system most likely has not received data with these labels. See Data delivery troubleshooting for possible solutions.

  4. Click Execute query.

  5. To view logs for a specific entry, expand it.

For more on logs, see Log search and analysis.

Service dashboard for logs

The system automatically collects incoming log metrics: data volume, delivery delays, number of errors by level, etc.

Incoming log charts are available on the service dashboard.

See also

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Getting started with Yandex Cloud resource logs