Пример CloudFormation для передачи во внутрь EC2 инстанса "ACCESS_KEY" и "SECRET_KEY" прямо из IAM для доступа к S3 Bucket используя AWS-Cli.
AWSTemplateFormatVersion: "2010-09-09" Description: 'Auto create VPC with instance' ########################################### BLOCK WITH ENVIRONMENTS ########################################### Parameters: ProjectName: Type: String Default: ArtemPool Description: Name of project. SSHKeyName: Type: String Default: artem Description: Name of SSH key. Image: Type: String Default: ami-0ff8a91507f77f867 Description: Image for instance (Default - Amazon Linux, if you changes it, you must install AWS-Cli manualy) ConstraintDescription: (ami-0ff8a91507f77f867 - Amazon Linux) Region: Type: String Default: us-east-1b Description: Region (Default - U.S. Virginia) ####################################### BLOCK WITH IAM FOR ACCESS TO S3 ###################################### Resources: myaccesskey: Type: AWS::IAM::AccessKey Properties: UserName: artem-s3 ########################################## BLOCK WITH EC2 INSTANCES ########################################## Ec2Instance: Type: AWS::EC2::Instance Properties: ImageId: !Ref Image InstanceType: t2.micro KeyName: !Ref SSHKeyName BlockDeviceMappings: - DeviceName: /dev/sdm Ebs: VolumeType: io1 Iops: 200 DeleteOnTermination: true VolumeSize: 20 UserData: Fn::Base64: !Sub ACCESS_KEY=${myaccesskey}&&SECRET_KEY=${myaccesskey.SecretAccessKey} Outputs: AccessKeyformyaccesskey: Value: !Ref myaccesskey SecretKeyformyaccesskey: Value: !GetAtt myaccesskey.SecretAccessKey ###############################################################################################################