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PostgreSQL cluster logs

For logging, the Logs service is used. For more information about how the service works and its cost, see the About Logs instructions. You can check the availability of the Logs service across locations in the Logs availability by location instructions.

For a PostgreSQL Managed Database cluster, events in the PostgreSQL databases and the PgBouncer connection pooler are logged.

To collect cluster logs in the Logs service, you need to enable logging. You can get logs in the control panel using API requests or via the AWS CLI. If you no longer need to collect logs, you can disable logging.

Logs are stored for 30 days.

For more information about logging in PostgreSQL databases, see the Error Reporting and Logging guide in the PostgreSQL documentation.

Enable logging

You can enable logging via the API or in the Control Panel:

Enable logging in an existing cluster

Logging uses part of the cluster's computing resources. To control the amount of resources consumed, monitor cluster node metrics. For details on how to view metrics, see the Monitoring of PostgreSQL cluster, nodes, and databases instructions.

  1. In the control panel, in the top menu, click Products and select Managed Databases.
  2. Open the Active tab.
  3. Open the cluster page → Settings tab.
  4. In the Logging block, in the Log service field, click Connect.
  5. Select a log group or create a new group.
  6. If you selected a new group, enter its name.
  7. Click Save.

Get logs

Use the Get logs instructions in the Logs section.

For the PostgreSQL Managed Databases cluster, the event streams postgresql.log-<instance_id> and pgbouncer.log-<instance_id> will be created, where <instance_id> is the PostgreSQL cluster node ID.

See the description of log fields for the PostgreSQL cluster.

Log fields

_HOSTNAMECluster node name in the format dbaas-<instance_id>, where <instance_id> is the PostgreSQL cluster node ID
SYSLOG_IDENTIFIERLog source name
SYSLOG_TIMESTAMPEvent timestamp in the log
MESSAGEDescription of the event provided by the log source

Disable logging

  1. In the control panel, in the top menu, click Products and select Cloud Databases.
  2. Open the Active tab.
  3. Open the cluster page → Settings tab.
  4. In the Logging section, in the Log service field, click .
  5. Clear the Collect cluster technical logs into log service checkbox.
  6. Click Save.