throwing error when i deploy

[Bendalam]

~/ebs_snapper$ ebs-snapper -V deploy --no_build 2>&1 | grep -v botocore
INFO:root:Creating S3 bucket ebs-snapper-842227021655 if it doesn't exist
INFO:root:Uploading files into S3 bucket
INFO:root:Skipping upload of cloudformation.json, already up-to-date in S3
INFO:root:Skipping upload of ebs_snapper.zip, already up-to-date in S3
INFO:root:Creating stack from https://s3.amazonaws.com/ebs-snapper-842227021655/cloudformation.json
INFO:root:Stack exists, updating stack from https://s3.amazonaws.com/ebs-snapper-842227021655/cloudformation.json
WARNING:root:No changes. Stack was not updated.
Unexpected error. Please report this traceback.
Traceback (most recent call last):
File "/home/cloud_user/ebs_snapper/ebs_snapper/shell.py", line 144, in main
args.func(args)
File "/home/cloud_user/ebs_snapper/ebs_snapper/shell.py", line 182, in shell_deploy
no_stack=args[0].no_stack
File "/home/cloud_user/ebs_snapper/ebs_snapper/deploy.py", line 104, in deploy
create_or_update_stack(aws_account, DEFAULT_REGION, ebs_bucket_name)
File "/home/cloud_user/ebs_snapper/ebs_snapper/deploy.py", line 257, in create_or_update_stack
wait_for_completion(cf_client, stack_name)
File "/home/cloud_user/ebs_snapper/ebs_snapper/deploy.py", line 186, in wait_for_completion
raise Exception('Stack creation or update failed', stack_data)
Exception: ('Stack creation or update failed', {u'StackId': 'arn:aws:cloudformation:us-east-1:842227021655:stack/ebs-snapper-842227021655/ffb6bae0-5b44-1
1e9-bbcb-0e366af4fd90', u'Description': 'Configures SNS topics and Lambda jobs for EBS Snapshot management', u'Parameters': [{u'ParameterValue': '256', u
'ParameterKey': 'LambdaMemoryClean'}, {u'ParameterValue': '', u'ParameterKey': 'CostCenter'}, {u'ParameterValue': 'us-east-1', u'ParameterKey': 'Watchdog
Region'}, {u'ParameterValue': 'ebs-snapper-842227021655', u'ParameterKey': 'LambdaS3Bucket'}, {u'ParameterValue': 'rate(30 minutes)', u'ParameterKey': 'C
reateScheduleExpression'}, {u'ParameterValue': 'rate(30 minutes)', u'ParameterKey': 'ReplicationScheduleExpression'}, {u'ParameterValue': '256', u'Parame
terKey': 'LambdaMemoryReplication'}, {u'ParameterValue': 'rate(6 hours)', u'ParameterKey': 'CleanScheduleExpression'}, {u'ParameterValue': '128', u'Param
eterKey': 'LambdaMemoryFanout'}, {u'ParameterValue': '256', u'ParameterKey': 'LambdaMemorySnapshot'}], u'Tags': [], u'EnableTerminationProtection': False
, u'CreationTime': datetime.datetime(2019, 4, 10, 3, 59, 11, 861000, tzinfo=tzlocal()), u'Capabilities': ['CAPABILITY_IAM'], u'StackName': 'ebs-snapper-8
42227021655', u'NotificationARNs': [], u'StackStatus': 'ROLLBACK_COMPLETE', u'DisableRollback': False, u'RollbackConfiguration': {}, u'DeletionTime': dat
etime.datetime(2019, 4, 10, 3, 59, 18, 556000, tzinfo=tzlocal())})

[martinb3]

Hi there -- could you look at the CloudFormation stack that failed to update, and tell us what the errors were that CloudFormation saw?

[gdelvalle]

EDIT:
I take the below back. Martin is right, we'd need to see details of why the stack updates failed. Perhaps the relevant snippet from the Events Tab in the cloudformation console would give us a better idea of what might have caused that error.

Looks like the stack was already deployed and the CF update was a No-op, thus the error
INFO:root:Stack exists, updating stack from https://s3.amazonaws.com/ebs-snapper-842227021655/cloudformation.json
WARNING:root:No changes. Stack was not updated.
Unexpected error. Please report this traceback.