Not able to access s3 object through Presigned Url and AssumeRoleCredentials

[shodhangk]

I have created presigned url to access the S3 object using AssumeRoleCredentials as below.

`client = Aws::AssumeRoleCredentials.new(role_arn: ENV['AWS_ROLE_ARN'],
                                                    role_session_name: "S3_Access",
                                                    duration_seconds: 3600)
aws_creds = client.credentials
post = Aws::S3::PresignedPost.new(aws_creds, S3_REGION, S3_BUCKET, {
        key: Rails.env + '/' + file_name,
        metadata: {
          'original-filename' => file_names
        }
      })`

But when I tried to upload the file using the resigned url, it is throwing below error.

<Code>InvalidAccessKeyId
</Code>
<Message>
The AWS Access Key Id you provided does not exist in our records.
</Message>
<AWSAccessKeyId>A************S</AWSAccessKeyId>
<RequestId>***********</RequestId>
<HostId>**********************</HostId>
</Error>

Even I tried with AssumeRoleWebIdentityCredentials, but no difference. I could perform other S3 actions with temporary Credentials. But accessing the s3 Object through presigned url is not working.

[mullermp]

Could you try a normal S3 action with assumed role credentials and see if it works? Your error looks like the credentials you are using do not exist.

credentials = Aws::AssumeRoleCredentials.new(role_arn: ENV['AWS_ROLE_ARN'], role_session_name: "S3_Access", duration_seconds: 3600)

s3 = Aws::S3::Client.new(credentials: credentials, region: 'us-east-1')
s3.list_buckets