title: How to migrate postgres data from lower to higher version in AWS EBS volumes
body: <p>Our application stores metadata in postgres database. We are using AWS ebs volumes for postgres data for persistent storage. We attach and detach this EBS volumes to AWS instance when needed. AWS instance is destroyed when not needed and will create new one when needed. EBS volume will be attached when new instance is created. The problem is, when ebs volume is detached postgres version is 9.x. While attaching EBS volume to new instance, postgres version in the new instance is 11.x. How to migrate the postgres data from 9.x to 11.x in the ebs volumes where new instance has 11.x version postgres version installed.</p>