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Compute virtual machines write logs from a serial console. Serial logs may help you with troubleshooting VM startup and shutdown failures, operating system incidents or other similar issues. Serial logs are kept for 14 days. The logs for deleted instances are also kept for 14 days, but you cannot see them in the web console. Use Grafana® or LogCLI to view logs of deleted instances. Serial logs for Compute are free of charge.

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View serial logs in web console

To view the serial logs of a given virtual machine:
  1. In the sidebar, go to https://mintcdn.com/nebius-ai-cloud/1Ha0sWR6e1mnIaHS/_assets/sidebar/compute.svg?fit=max&auto=format&n=1Ha0sWR6e1mnIaHS&q=85&s=b91340217b08a1456d88ae0347f281d1 Compute → Virtual machines.
  2. Select the virtual machine you need and switch to the Serial logs tab.
To view all serial logs in one place:
  1. In the sidebar, go to https://mintcdn.com/nebius-ai-cloud/1Ha0sWR6e1mnIaHS/_assets/sidebar/observability.svg?fit=max&auto=format&n=1Ha0sWR6e1mnIaHS&q=85&s=911a6fc7da512bdf286067c68245a501 Observability → Logs.
  2. Select the serial logs bucket.
  3. Optionally, filter the logs by virtual machine ID.

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View serial logs in Grafana®

You can visualize the serial logs of services in Grafana. After you connect Grafana, set the __bucket__ label value to sp_serial.

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Query serial logs with LogCLI

After you set up LogCLI, set the __bucket__ label value to sp_serial in your queries, for example: 
logcli query '{__bucket__="sp_serial"}' --since 15m
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