I'm trying to use AWS cli commands inside the container.
I have given policy within ECS cluster instance but it seems the container comes up with error as it tries to call AWS CLI command inside the container as an entrypoint when it boots and fails.
My IAM role with Instance Profile allows to do KMS get and decrypt which is what I need for the AWS CLI operations
Is there a way to pass credentials like instance profile inside ECS task container?
To pass a role to your caontainer(s) in a task you can use IAM Roles for Tasks:
With IAM roles for Amazon ECS tasks, you can specify an IAM role that can be used by the containers in a task. Applications must sign their AWS API requests with AWS credentials, and this feature provides a strategy for managing credentials for your applications to use, similar to the way that Amazon EC2 instance profiles provide credentials to EC2 instances.
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'm looking for an example of how to assume a role from within a running application within ECS.
I have a role setup, and I've added the roleARN to the task definition, using the setup here: https://docs.aws.amazon.com/en_us/AmazonECS/latest/developerguide/task-iam-roles.html
Can I then assume the role from the application logic as usual? Or is there something special required?
I have this setup working, but with a IAM User which has a Secret Key and Access Key used as credentials within my application. Would switching this auth to the assume role be possible with the setup above?
The AWS SDK and CLI will automatically handle using the credentials from the assigned IAM task role.
Note that when you specify an IAM role for a task, the AWS CLI or other SDKs in the containers for that task use the AWS credentials provided by the task role exclusively and they no longer inherit any IAM permissions from the container instance.
I am attempting to launch a Docker container stored in ECR as an AWS batch job. The entrypoint python script of this container attempts to connect to S3 and download a file.
I have attached a role with AmazonS3FullAccess to both the AWSBatchServiceRole in the compute environment and I have also attached a role with AmazonS3FullAccess to the compute resources.
This is the following error that is being logged: botocore.exceptions.ConnectTimeoutError: Connect timeout on endpoint URL: "https://s3.amazonaws.com/"
There is a chance that these instances are being launched in a custom VPC, not the default VPC. I'm not sure this makes a difference, but maybe that is part of the problem. I do not have appropriate access to check. I have tested this Docker image on an EC2 instance launched in the same VPC and everything works as expected.
You mentioned compute environment and compute resources. Did you add this S3 policy to the Job Role as mentioned here?
After you have created a role and attached a policy to that role, you can run tasks that assume the role. You have several options to do this:
Specify an IAM role for your tasks in the task definition. You can create a new task definition or a new revision of an existing task definition and specify the role you created previously. If you use the console to create your task definition, choose your IAM role in the Task Role field. If you use the AWS CLI or SDKs, specify your task role ARN using the taskRoleArn parameter. For more information, see Creating a Task Definition.
Specify an IAM task role override when running a task. You can specify an IAM task role override when running a task. If you use the console to run your task, choose Advanced Options and then choose your IAM role in the Task Role field. If you use the AWS CLI or SDKs, specify your task role ARN using the taskRoleArn parameter in the overrides JSON object. For more information, see Running Tasks.
I'm fairly new to AWS. I'm setting up an EC2 instance (an Ubuntu 18.04 LAMP server).
I've installed the aws CLI on the instance, so I can automate EBS snapshots for backup.
I've also created an IAM role with the needed permissions to run aws ec2 create-snapshot, and I've assigned this role to my EC2 instance.
My question: is there any need to run aws configure on the EC2 instance, in order to set the AWS Access Key ID and AWS Secret Access Key? I'm still wrapping my head around AWS IAM roles – but (since the EC2 instance has a role), it sounds like the instance will acquire the needed keys from IAM automagically. Therefore, I assume that there's never any need to run aws configure. (In fact, it seems like this would be counterproductive, since the keys set via aws configure would override the keys acquired automatically via the role.)
Is all of that accurate?
No, the AWS CLI will progress through a list of credential providers. The instance metadata service will eventually be reached, even if you have not configured the AWS cli:
https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#config-settings-and-precedence
And yes, if you add keys to the AWSCLI config file, they will be used with higher priority than those obtained from the instance metadata service.
How we can restrict an IAM User to launch EC2 Instance and VPC via Cloudformation only. I don't want user to launch the EC2 instance and VPC directly by console.
Two options:
Use a role with AWS CloudFormation
When launching a CloudFormation stack, a role can be specified. This role can have the necessary permissions to launch the stack, even if the user doesn't have it.
See: AWS CloudFormation Service Role - AWS CloudFormation
Use AWS Service Catalog
AWS Service Catalog allows you to create a portfolio of offerings that users can launch. It uses a role to launch services even if the user themselves doesn't have permission to launch the services themselves.
See: AWS Service Catalog Documentation