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Viewing MySQL® cluster logs

Written by
Updated at May 5, 2025

Managed Service for MySQL® allows you to get a cluster log snippet for the selected period and view logs in real time.

Note

Cluster logs are kept for 30 days.

Getting a cluster log

  1. Go to the folder page and select Managed Service for MySQL.
  2. Click the name of the cluster you need and select the Logs tab.
  3. Specify the time period you want the log info for: enter it manually or select in the calendar using the date input field.
  4. Select the type of events to display. The default type is MYSQL_ERROR.
  5. Specify the hosts and logging level in the line with the date input field if needed.

A list of log entries for the selected time period will be displayed. To view detailed information about an event, click the respective entry in the list.

If there are too many records and not all of them are displayed, click Load more at the end of the list.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

  1. View the description of the CLI command to view cluster logs:

    yc managed-mysql cluster list-logs --help

  2. Run the following command to get cluster logs (our example does not contain a complete list of available parameters):

    yc managed-mysql cluster list-logs <cluster_name_or_ID> \
   --limit <entry_number_limit> \
   --format <output_format> \
   --service-type <service_type> \
   --columns <column_list> \
   --filter <filter_settings> \
   --since <time_range_left_boundary> \
   --until <time_range_right_boundary>

    Where:

    • --limit: limits on the number of entries to output.

    • --format: Format for log entries (text, yaml, json, or json-rest).

    • --service-type: Type of the service for which you want to output records (mysql-error, mysql-general, mysql-slow-query, or mysql-audit).

    • --columns: List of columns for data output:

      • hostname: Host name.
      • id: Request ID.
      • message: Message output by the service.
      • status: Message status, e.g., Note or Warning.

      Note

      The example only contains the main columns. A list of columns to output depends on the selected --service-type.

      To output separate columns, provide the --format key and specify the output format (yaml, json, or json-rest). Columns are not supported for text output format that is set by default.

    • --filter: record filter settings, for example, message.hostname='node1.mdb.yandexcloud.net'.

    • --since: Left boundary of a time range in RFC-3339, HH:MM:SS format or a time interval relative to the current time. Examples: 2006-01-02T15:04:05Z, 15:04:05, 2h, 3h30m ago.

    • --until: right boundary of a time range, the format is similar to that of --since.

You can request the cluster name and ID with a list of clusters in the folder.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Use the Cluster.listLogs method and make a request, e.g., via cURL:

    curl \
    --request GET \
    --header "Authorization: Bearer $IAM_TOKEN" \
    --url 'https://mdb.api.cloud.yandex.net/managed-mysql/v1/clusters/<cluster_ID>:logs' \
    --url-query serviceType=<service_type> \
    --url-query columnFilter=<column_list> \
    --url-query fromTime=<time_range_left_boundary> \
    --url-query toTime=<time_range_right_boundary>

    Where:

    • serviceType: Type of the service to get logs for:

    • columnFilter: List of columns for data output:

      • hostname: Host name.
      • id: Request ID.
      • message: Message output by the service.
      • status: Message status, e.g., Note or Warning.
      • raw: Raw data for all columns.

      Note

      The example only contains the main columns. A list of columns to output depends on the selected serviceType.

    • fromTime: Left boundary of a time range in RFC-3339 format, Example: 2024-09-18T15:04:05Z.

    • toTime: Right boundary of a time range, the format is the same as for fromTime.

    You can get the cluster ID with a list of clusters in the folder.

  3. View the server response to make sure the request was successful.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Clone the cloudapi repository:

    cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi

    Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

  3. Use the ClusterService/ListLogs call and make a request, e.g., via gRPCurl:

    grpcurl \
  -format json \
  -import-path ~/cloudapi/ \
  -import-path ~/cloudapi/third_party/googleapis/ \
  -proto ~/cloudapi/yandex/cloud/mdb/mysql/v1/cluster_service.proto \
  -rpc-header "Authorization: Bearer $IAM_TOKEN" \
  -d '{
        "cluster_id": "<cluster_ID>",
        "service_type": "<service_type>",
        "column_filter": [
          "<column_1>", "<column_2>", ..., "<column_N>"
        ],
        "from_time": "<time_range_left_boundary>",
        "to_time": "<time_range_right_boundary>"
      }' \
  mdb.api.cloud.yandex.net:443 \
  yandex.cloud.mdb.mysql.v1.ClusterService.ListLogs

    Where:

    • service_type: Type of the service to get logs for:

    • column_filter: List of columns for data output:

      • hostname: Host name.
      • id: Request ID.
      • message: Message output by the service.
      • status: Message status, e.g., Note or Warning.
      • raw: Raw data for all columns.

      Note

      The example only contains the main columns. A list of columns to output depends on the selected service_type.

    • from_time: Left boundary of a time range in RFC-3339 format, e.g., 2024-09-18T15:04:05Z.

    • to_time: Right boundary of a time range, the format is the same as for from_time.

    You can get the cluster ID with a list of clusters in the folder.

  4. View the server response to make sure the request was successful.

Getting a cluster log stream

This method allows you to get cluster logs in real time.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

To view cluster logs as they become available, run this command:

yc managed-mysql cluster list-logs <cluster_name_or_ID> --follow

You can request the cluster name and ID with a list of clusters in the folder.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Use the Cluster.streamLogs method and make a request, e.g., via cURL:

    curl \
    --request GET \
    --header "Authorization: Bearer $IAM_TOKEN" \
    --url 'https://mdb.api.cloud.yandex.net/managed-mysql/v1/clusters/<cluster_ID>:stream_logs' \
    --url-query serviceType=<service_type> \
    --url-query columnFilter=<column_list>

    Where:

    You can get the cluster ID with a list of clusters in the folder.

  3. View the server response to make sure the request was successful.

    Once you run the command, it does not terminate. The command output displays new logs in real time.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Clone the cloudapi repository:

    cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi

    Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

  3. Use the ClusterService/StreamLogs call and make a request, e.g., via gRPCurl:

    grpcurl \
    -format json \
    -import-path ~/cloudapi/ \
    -import-path ~/cloudapi/third_party/googleapis/ \
    -proto ~/cloudapi/yandex/cloud/mdb/mysql/v1/cluster_service.proto \
    -rpc-header "Authorization: Bearer $IAM_TOKEN" \
    -d '{
          "cluster_id": "<cluster_ID>",
          "service_type": "<service_type>",
          "column_filter": [
            "<column_1>", "<column_2>", ..., "<column_N>"
          ]
        }' \
    mdb.api.cloud.yandex.net:443 \
    yandex.cloud.mdb.mysql.v1.ClusterService.StreamLogs

    Where:

    • service_type: Type of the service to get logs for:

    • column_filter: List of columns for data output:

      • hostname: Host name.
      • id: Request ID.
      • message: Message output by the service.
      • status: Message status, e.g., Note or Warning.
      • raw: Raw data for all columns.

      Note

      The example only contains the main columns. A list of columns to output depends on the selected service_type.

    • from_time: Left boundary of a time range in RFC-3339 format, e.g., 2024-09-18T15:04:05Z.

    • to_time: Right boundary of a time range, the format is the same as for from_time.

    You can get the cluster ID with a list of clusters in the folder.

  4. View the server response to make sure the request was successful.

    Once you run the command, it does not terminate. The command output displays new logs in real time.

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