Add user for a specific S3 bucket

In order to add an IAM user to an S3 bucket in AWS, you have to create a policy and attach to the user.

1. At first, make sure you’re a root user of AWS.
2. Go through the IAM panel.
3. Then click on the ‘Policies’ menu on the left sidebar.

4. Then create a policy using the following JSON, just make sure you’ve put the proper bucket name.

   {
       "Version": "2012-10-17",
       "Statement": [
           {
               "Effect": "Allow",
               "Action": [
                   "s3:ListAllMyBuckets",
                   "s3:GetBucketLocation"
               ],
               "Resource": "*"
           },
           {
               "Effect": "Allow",
               "Action": "s3:ListBucket",
               "Resource": "arn:aws:s3:::mybucket"
           },
           {
               "Effect": "Allow",
               "Action": [
                   "s3:PutObject",
                   "s3:GetObject",
                   "s3:DeleteObject",
                   "s3:PutObjectAcl"
               ],
               "Resource": "arn:aws:s3:::mybucket/*"
           }
       ]
   }

5. Review and save the policy.
6. Then you have to attach the newly created policy to your new or existing IAM user.
7. That’s all.