Is it possible to automatic enable/disable container service or start/stop database in Amazon Lightsail?

Hello.
You can use "stop_relational_database" to stop the Lightsail database.
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/lightsail/client/stop_relational_database.html

For Lightsail containers, it is possible to disable the service using "update_container_service".
Note, however, that Lightsail containers are still charged even if disabled.
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/lightsail/client/update_container_service.html

https://aws.amazon.com/lightsail/faq/?nc1=h_ls#Containers

Q: Will I be charged for the whole month even if I run my container service for a few days?

Your Lightsail container services are charged only when they're in the running or disabled state. If you delete your Lightsail container service before the end of the month, we charge you a prorated cost based on the total number of hours that you used your Lightsail container service. For example, if you use your Lightsail container service with a power of Micro and scale of 1 for 100 hours in a month, you will be charged $1.34 ($0.0134*100).