automatically change type of ebs volumes

Requirements

Have the jq tool installed to better handle the JSON returned by the aws command and the aws cli.

$ sudo apt install jq

or

$ sudo yum install jq

AWS CLI install instructions https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html

Usage

Configure AWS CLI

Set the configuration file and authentication information file.

$ aws configure
AWS Access Key ID [None]: XXXXXXXXXXXXXXXXX
AWS Secret Access Key [None]: XXXXXXXXXXXXXXXXXXXXXXXXXX
Default region name [None]: region
Default output format [None]: 

How to run?

$ ./change_type_ebs.sh

This same script can be used to massively change EBS volumes of other types, such as standard, io1, io2, sc1, st1, etc.