I am using script to create an S3 bucket and uploading cloudformation templates to that bucket with same user credentials.
But when trying to access the templates of that bucket using cloudformation, am getting access denied. I even tried adding the bucket policy and giving explicit access to that user but getting same "Access denied" error. Please suggest if am missing anything. Thank you.
As you are trying to access the s3 bucket using cloud formation, you need to ensure that cloud formation should have proper permission to access S3 because this time you are not calling the S3 API but cloud formation.
If you are using AWS CloudFormation via the management console, then CloudFormation will use your own credentials to retrieve the template from Amazon S3.
Therefore, the user that is using CloudFormation will require access to the object in Amazon S3.
If you believe that this has been correctly configured, please edit your Question to provide more details (eg the permissions granted to the user who is using CloudFormation).
Related
I'm trying to understand the AWS Amplify documentation section "Using Amazon S3". It says:
If you set up your Cognito resources manually, the roles will need to be given permission to access the S3 bucket.
There are two roles created by Cognito: an Auth_Role that grants signed-in-user-level bucket access and an Unauth_Role that allows unauthenticated access to resources. Attach the corresponding policies to each role for proper S3 access. Replace {enter bucket name} with the correct S3 bucket.
And then the docs provide JSON examples of Policies for Auth_Role and Unauth_Role. What's confusing me is that when I go into my Roles in my IAM console, I have the following:
amplify--dev-153155-authRole (contains AppSync resources)
amplify--dev-153155-authRole-idp (log group resources)
amplify--dev-153155-unauthRole (empty)
Neither of which contain anything like the JSON examples. The "...authRole" Policy contains actions/resources concerning AppSync, but nothing to do with S3. Likewise for the other two. I expected to find permissions to allow my Amplify app to get/store S3 items, otherwise how is it able to currently do it?
So my questions are:
How do I create and attach the policies provided in the above documentation? Do I simply paste the JSON into new policies in my IAM console, and attach them to the Auth_Role?
Where are the default permissions stored? I have set up an amplify app and added S3 with amplify add storage. I can connect to the S3 bucket to add and retrieve files - so presumably there must be existing Polices. But my Auth_Role contains no Policies that reference S3?
I am trying to register a respository on AWS S3 to store ElasticSearch snapshots.
I am following guide and ran the very first command listed in the doc.
But I am getting the error Access Denied while executing that command.
The role that is being used to perform operations on S3 is the AmazonEKSNodeRole.
I have assigned the appropriate permissions to the role to perform operations on the S3 bucket.
Also, here is another doc which suggests to use kibana for ElasticSearch version > 7.2 but I am doing the same via cURL requests.
Below is trust Policy of the role through which I am making the request to register repository in the S3 bucket.
Also, below are the screenshots of the permissions of the trusting and trusted accounts respectively -
I created an IAM role that gives full access to the S3 Bucket and attached it to the EC2 instance. However, I am unable to view the image when I try to view it from the EC2 hosted website. I keep getting a 403 Forbidden code.
Below is the IAM role and the policy attached:
It is seen that GetObject is enabled:
But the error still persists:
Any advice on how to solve this? Thank you for reading.
The URL you are using to access the object does not appear to include any security information (bucket.s3.amazonaws.com/cat1.jpg). Thus, it is simply an 'anonymous' request to S3, and since the object is private, S3 will deny the request.
The mere fact that the request is being sent from an Amazon EC2 instance that has been assigned an IAM Role is not sufficient to obtain access to the object via an anonymous URL.
To allow a browser to access a private Amazon S3 object, your application should generate an Amazon S3 pre-signed URLs. This is a time-limited URL that includes security information that identifies you as the requester and includes a signature that permits access to the private object.
Alternatively, code running on the instance can use an AWS SDK to make an API call to S3 to access the object (eg GetObject()). This will succeed because the AWS SDK will use the credentials provided by the IAM Role.
I found an issue with a S3 bucket.
The bucket don't have any ACL associated, and the user that create the bucket was deleted.
How it's possible add some ACL in the bucket to get the control back?
For any command using AWS CLI, the result are the same always: An error occurred (AccessDenied) when calling the operation: Access Denied
Also in AWS console the access is denied.
First things first , AccessDenied error in AWS indicates that your AWS user does not have access to S3 service , Get S3 permission to your IAM user account , if in case you had access to AWS S3 service.
The thing is since you are using cli make sure AWS client KEY and secret are still correctly in local.
Now the interesting use case :
You have access to S3 service but cannot access the bucket since the bucket had some policies set
In this case if user who set the policies left and no user was able to access this bucket, the best way is to ask AWS root account holder to change the bucket permissions
An IAM user with the managed policy named AdministratorAccess should be able to access all S3 buckets within the same AWS account. Unless you have applied some unusual S3 bucket policy or ACL, in which case you might need to log in as the account's root user and modify that bucket policy or ACL.
See Why am I getting an "Access Denied" error from the S3 when I try to modify a bucket policy?
I just posted this on a related thread...
https://stackoverflow.com/a/73977525/999943
https://aws.amazon.com/premiumsupport/knowledge-center/s3-bucket-owner-full-control-acl/
Basically when putting objects from the non-bucket owner, you need to set the acl at the same time.
--acl bucket-owner-full-control
I am trying to run a script from OpenTraffic repository, and it needs access to some AWS S3 buckets. I am unable to figure out how to get access to a particular AWS S3 bucket?
FYI:
OpenTraffic is a open source platform to obtain and analyse dynamic traffic data : https://github.com/opentraffic
The script I am trying to run:
https://github.com/opentraffic/reporter/blob/dev/load-historical-data/load_data.sh
Documentation(https://github.com/opentraffic/reporter/tree/dev/load-historical-data) says: In order to run above script,
access required to both s3://grab_historical_data, s3://reporter-drop-
{prod, dev}.
Your're accessing the S3 buckets from r3.4xlarge ec2 instance according to the documentation link your share.
Firstly, You've to create a IAM role for ec2 instance and S3 access policy with it.
Create the ec2 instance and attach the IAM role to it because this is the only time you can to assign a role to it and launch it.
Role gives your ec2 instance access permission for s3 bucket.