I am trying to configure jboss to use AWS IAM Roles for accessing S3 and SQS. All of the documentation I've seen uses static access and secret keys rather than the dynamic keys that roles allow for.
Is there any documentation on doing this?
Create an EC2 instance assigning that Role. Whatever you run any app in that instance will be able to access the AWS resources.
This way you don't need to write any code for security within the application.
Also in your code you don't need to supply any credentials when you assign the role to the EC2 instance.
In AWS there are two approaches to provide permission using AWS IAM to your code to access AWS resources such as S3 and SQS.
If your code runs in Amazon Compute Services such as EC2, Lambda it is recommended to create a IAM Role with required policies to access S3 & SQS also allowing the Compute Service (EC2, Lambda) to assume that role (Using Trust Relationships). After attaching this role, either to EC2 or Lambda, you can directly use AWS SDK to access S3 and SQS without needing any credentials or access tokens to configure for SDK.
For more information, see Using an IAM Role to Grant Permissions to
Applications Running on Amazon EC2 Instances.
If your code runs on premise or external to the Amazon infrastructure, you need to create a IAM user with required policies and also create access keys (Access Key ID & Secret Key) and initialize SDK to allow access to S3 or SQS as shown below.
var AWS = require('aws-sdk');
AWS.config.credentials = new AWS.Credentials({
accessKeyId: 'akid', secretAccessKey: 'secret'
});
Related
I'm trying to create a botocore session (that does not use my local AWS credentials on ~/.aws/credentials). In other words, I want to create a "burner AWS account". With that burner credentials/session, I want to setup an STS client and with that client, assume a role in order to access a DynamoDB database. Can someone provide some example code which accomplishes exactly this?
Because if I want my system to go into production environment, I CANNOT store the AWS credentials on Github because AWS will scan for it. I'm trying to implement a workaround such that we don't have to store ~/.aws/credentials file on Github.
The running a task in Amazon ECS, simply assign an IAM Role to the task.
Amazon ECS will then generate temporary credentials for that IAM Role. Any code that uses an AWS SDK (such as boto3 for Python) knows how to access those credentials via the metadata service.
The result is that your code using boto3 will automatically receive credentials that have the permissions associated with the IAM Role assigned to the task.
See: IAM roles for tasks - Amazon Elastic Container Service
I have running app on auto-scaled ec2 env. of account1 created via AWS CDK (it also should have support to be run on multiple regions). During the app execution I need to get object from account2's s3.
One of the ways to get s3 data is use tmp credentials(via sts assume role):
on account1 side create a policy for ec2 instance role to assume sts tmp credentials for s3 object
on account2 side create a policy GetObject access to the s3 object
on account2 site create role and attach point2's policy to it + trust relationship to account1's ec2 role
Pros: no user credentials are required to get access to the data
Cons: after each env update requires manual permission configuration
Another way is to create a user in account2 with permission to get s3 object and put the credentials on account1 side.
Pros: after each env update doesn't require manual permission configuration
Cons: Exposes IAM user's credentials
Is there a better option to eliminate manual permission config and explicit IAM user credentials sharing?
You can add a Bucket Policy on the Amazon S3 bucket in Account 2 that permits access by the IAM Role used by the Amazon EC2 instance in Account 1.
That way, the EC2 instance(s) can access the bucket just like it is in the same Account, without have to assume any roles or users.
Simply set the Principal to be the ARN of the IAM Role used by the EC2 instances.
We currently have 2 AWS accounts that we use. For most of the stuff we want to use the AWS account that our web app is hosted on in an EC2 instance so this works fine:
services.AddDefaultAWSOptions(this.Configuration.GetAWSOptions());
services.AddAWSService<IAmazonSQS>();
services.AddAWSService<IAmazonSimpleSystemsManagement>();
However, I want to access EC2 instances in another AWS account. I've configured it to work locally using credentials and from following this guide (where it mentions about using multiple services): https://docs.aws.amazon.com/sdk-for-net/latest/developer-guide/net-dg-config-netcore.html
services.AddDefaultAWSOptions(this.Configuration.GetAWSOptions());
services.AddAWSService<IAmazonSQS>();
services.AddAWSService<IAmazonSimpleSystemsManagement>();
if (this.WebHostEnvironment.IsDevelopment())
{
// This works fine locally, but I don't want to use credential file in production
var other = this.Configuration.GetAWSOptions("other");
services.AddAWSService<IAmazonEC2>(other);
}
else
{
// How do I register other here without putting a credential file on my ec2 instance?
services.AddAWSService<IAmazonEC2>();
}
I'm not sure how to register IAmazonEC2 to use my other account. I don't want to put a credential file on my instance which is how I get it working locally but it doesn't seem right to me on production servers.
I have configured an IAM role that has access to my other account and given it to my EC2 instance. But how do I translate that IAM role to a profile to use where I am registering IAmazonEC2 above?
Any help appreciated. Thanks
There are really two ways to do it...
Option 1: Use an IAM Role
Let's say that the Amazon EC2 instance is running in Account-A and it now wants to query information about Account-B. You could:
Create an IAM Role in Account-B, with a trust policy that trusts the IAM Role being used by the EC2 instance in Account-A
Your code running on the EC2 instance in Account-A can call AssumeRole() (using the normal credentials from Account-A). This will return a set of temporary credentials.
Use those temporary credentials to make API calls to Account-B
Option 2: Use credentials from Account-B
Alternatively, give your program a set of IAM User credentials from Account-B. These could be stored in AWS Systems Manager Parameter Store - AWS Systems Manager or AWS Secrets Manager, and retrieved by using the normal credentials assigned to the EC2 instance in Account-A.
I am using AWS Secret Manager Service to retrieve some confidential information like SMTP details or connection strings. However, to get secret value from AWS Secret Manager Service it seems like we need to pass the Access key and secret key apart from which secret we want to retrieve. So I am maintaining those values in config file.
public AwsSecretManagerService(IOptions<AwsAppSettings> settings)
{
awsAppSettings = settings.Value;
amazonSecretsManagerClient = new AmazonSecretsManagerClient
(awsAppSettings.Accesskey, awsAppSettings.SecretKey, RegionEndpoint.GetBySystemName(awsAppSettings.Region));
}
public async Task<SecretValueResponse> GetSecretValueAsync(SecretValueRequest secretValueRequest)
{
return _mapper.Map<SecretValueResponse>(await amazonSecretsManagerClient.GetSecretValueAsync(_mapper.Map<GetSecretValueRequest>(secretValueRequest)));
}
So I am thinking I am kind of defeating the whole purpose of using secret manager by maintaining the AWS credentials in app settings file. I am wondering what is the right way to do this
It is not a good practice to pass or add AWS credentials of an IAM User (access key and secret access key) in the code.
Instead, don't pass it and update your code as follows:
amazonSecretsManagerClient = new AmazonSecretsManagerClient
(RegionEndpoint.GetBySystemName(awsAppSettings.Region));
Question: Then how would it access the AWS services?
Answer: If you are going to execute your code on your local system, install and configure AWS CLI instead of passing AWS credentials via CLI or Terminal, it will use those AWS configured credentials to access the AWS services.
Reference for AWS CLI Installation: Installing the AWS CLI
Reference for AWS CLI Configuration: Configuring the AWS CLI
If you are going to execute your code on an AWS service (e.g., EC2 instance), attach an IAM role with that AWS resource (e.g., EC2 instance) having sufficient permissions, it will use that IAM role to access the AWS services.
Everywhere I can see IAM Role is created on EC2 instance and given Roles like S3FullAccess.
Is it possible to create IAM Role on S3 instead of EC2? And attach that Role to S3 bucket?
I created IAM Role on S3 with S3FULLACCESS. Not able to attach that to the existing bucket or create a new bucket with this Role. Please help
IAM (Identity and Access Management) Roles are a way of assigning permissions to applications, services, EC2 instances, etc.
Examples:
When a Role is assigned to an EC2 instance, credentials are passed to software running on the instance so that they can call AWS services.
When a Role is assigned to an Amazon Redshift cluster, it can use the permissions within the Role to access data stored in Amazon S3 buckets.
When a Role is assigned to an AWS Lambda function, it gives the function permission to call other AWS services such as S3, DynamoDB or Kinesis.
In all these cases, something is using the credentials to call AWS APIs.
Amazon S3 never requires credentials to call an AWS API. While it can call other services for Event Notifications, the permissions are actually put on the receiving service rather than S3 as the requesting service.
Thus, there is never any need to attach a Role to an Amazon S3 bucket.
Roles do not apply to S3 as it does with EC2.
Assuming #Sunil is asking if we can restrict access to data in S3.
In that case, we can either Set S3 ACL on the buckets or the object in it OR Set S3 bucket policies.