How frequently should I expect "Scheduled Maintenance for Amazon Lightsail instances"

Hello. Thank you for contacting AWS!

I am writing to express my sincerest apologies for the unexpected maintenance activity that caused your Lightsail instance to go down, resulting in the temporary disruption of your website hosted on AWS. I understand how frustrating and inconvenient this situation must have been for you, and I deeply regret any negative impact it had on your business operations.

This maintenance activity occurs when your lightsail instance is lying on an unhealthy hardware/host and AWS needs to perform a maintenance activity to move the lightsail to a new, healthy host by stopping and starting the instance.

Before the deadline, you can manually stop and start the instance to migrate it to a new, healthy host. After the instance has been moved to healthy host, AWS won't do anything to the instances.

Note: A stop and start isn't equivalent to a reboot. A start is required to migrate the instance to healthy hardware.

Warning: Before stopping and starting your instance, be aware that the public IP address of the instance changes on every instance stop and start. If you want a public IP that doesn't change on every stop and start of the instance, then you can attach a static IP address.