boto3 s3 bucket tagging - python-3.x

Question

I'm getting access error while tagging a bucket. Please note that the role I'm using has s3 full access.
The code works fine till this point-
for bucket in s3.buckets.all():
s3_bucket = bucket
s3_bucket_name = s3_bucket.name
try:
response = s3_client.get_bucket_tagging(Bucket=s3_bucket_name)
print(response)
except ClientError:
print (s3_bucket_name, "does not have tags")
but after adding putTag code, it gives error even for GetBucketTagging operation.
This is my final code:
for bucket in s3.buckets.all():
s3_bucket = bucket
s3_bucket_name = s3_bucket.name
try:
response = s3_client.get_bucket_tagging(Bucket=s3_bucket_name)
print(response)
except ClientError:
print (s3_bucket_name, "does not have tags")
bucket_tagging = s3.BucketTagging(s3_bucket_name)
response = bucket_tagging.put(
Tagging={
'TagSet': [
{
'Key': 'pcs:name',
'Value': s3_bucket_name
},
]
},
)
The error I'm getting is-
botocore.exceptions.ClientError: An error occurred (AccessDenied) when calling the GetBucketTagging operation: Access Denied
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "tagging.py", line 91, in <module>
tagging()
File "tagging.py", line 71, in tagging
'Value': s3_bucket_name
File "/home/ec2-user/compass_backend/compass_backend/lib64/python3.7/site-packages/boto3/resources/factory.py", line 520, in do_action
response = action(self, *args, **kwargs)
File "/home/ec2-user/compass_backend/compass_backend/lib64/python3.7/site-packages/boto3/resources/action.py", line 83, in __call__
response = getattr(parent.meta.client, operation_name)(*args, **params)
File "/home/ec2-user/compass_backend/compass_backend/lib64/python3.7/site-packages/botocore/client.py", line 395, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/home/ec2-user/compass_backend/compass_backend/lib64/python3.7/site-packages/botocore/client.py", line 725, in _make_api_call
raise error_class(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occurred (AccessDenied) when calling the PutBucketTagging operation: Access Denied
am I passing the tag parameters wrong? Got this from Boto3 documentation itself

Answer 1

I couldn't find a way to catch the exception, however, this worked for me:
tagging_client = boto3.client('resourcegroupstaggingapi')
s3 = boto3.resource('s3')
s3_client = boto3.client('s3')
for bucket in s3.buckets.all():
s3_bucket = bucket
s3_bucket_name = s3_bucket.name
bucket_tagging = s3.BucketTagging(s3_bucket_name)
try:
response = s3_client.get_bucket_tagging(Bucket=s3_bucket_name)
a = response
except ClientError:
response = tagging_client.tag_resources(
ResourceARNList=[
"arn:aws:s3:::" + bucket.name
],
Tags={
'pcs:name': bucket.name
}
)
pls note that you'll need the additional "resource tagging" policy attached to your role.
Hope this helps. Cheers.

Answer 2

I took out the try sections and ran this version of your code:
import boto3
s3_resource = boto3.resource('s3')
bucket_tagging = s3_resource.BucketTagging('my-bucket-name')
response = bucket_tagging.put(
Tagging={
'TagSet': [
{
'Key': 'pcs:name',
'Value': 'stackoverflow'
},
]
},
)
It worked fine:
[
Therefore, there must be something else that is causing your request to fail. You might want to check AWS CloudTrail to see if there is a hint as to why the request was denied.

Answer 3

"get_bucket_tagging" throws NoSuchTagSet when there are no tags. for testing create a tag first before run test or Catch the exception and create tags.