Automatically change the rds database instance type using the lambda function

In this video we will change the RDS database type using the python lambda function

Code used in this video :-

import sys
import botocore
import boto3
import json
from botocore.exceptions import ClientError

def lambda_handler(event, context):
rds = boto3.client('rds')
lambdaFunc = boto3.client('lambda')
print('Trying to get Environment variable')

try:
funcResponse = lambdaFunc.get_function_configuration(
FunctionName='RDS_Instance_Modification_Function'
)
DBinstance = funcResponse['Environment']['Variables']['DBInstanceName']
DBinstanceClass = funcResponse['Environment']['Variables']['DBinstanceClass']

print(f'Starting RDS service for DBInstance: {DBinstance}')
print(f'RDS instance class: {DBinstanceClass}')

response = rds.modify_db_instance(DBInstanceIdentifier=DBinstance, DBInstanceClass=DBinstanceClass, ApplyImmediately=True)

print(f'Success :: {response}')
return json.dumps(dict(abc=123))
except ClientError as e:
return json.dumps(dict(error=str(e)))

return json.dumps(dict(abc=12345))


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Additional Policy added in the IAM cosole :-

{
"Effect": "Allow",
"Action": "lambda:GetFunctionConfiguration",
"Resource": "Your lambda function ARN"
}