Maintaining a DB instance
Periodically, Amazon Timestream for InfluxDB performs maintenance on Amazon Timestream for InfluxDB resources. Maintenance most often involves updates to the following resources in your DB instance:
Underlying hardware
Underlying operating system (OS)
Database engine version
Updates to the operating system most often occur for security issues.
Some maintenance items require that Amazon Timestream for InfluxDB take your DB instance offline for a short time. Maintenance items that require a resource to be offline include required operating system or database patching. Required patching is automatically scheduled only for patches that are related to security and instance reliability. Such patching occurs infrequently, typically once every few months. It seldom requires more than a fraction of your maintenance window.
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Maintenance windows are configured to take place everyday between 12 AM and 4 AM local time for the Region your instance is being hosted.
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Customer resources might be patched once a week in any one of the seven maintenance windows in the week.