cloudformation to create ec2 using volume attachment for root.
Hello I am trying to create one EC2 using cloudformation. The requirement is to use volume attachment with a snapshot id. This snapshot id is coming from my AMI and the snapshot id provided is the root device. (AMI only consist of one snapshot)
I got the error message: Property ImageId cannot be empty when deploying the resource. When I input the ImageId for AWS::EC2::Instance, it will crash with AWS::EC2::VolumeAttachment property.
Can someone help to modify my template and point out how can I fix this issue?
--- Description: "AWS CloudFormation sample template. Create a new EC2 instance" Resources: myEC2Instance: Properties: IamInstanceProfile: ec2role InstanceType: t2.micro SecurityGroupIds: - sg-123456 SubnetId: subnet-123456 Tags: - Key: Name Value: ec2test Type: "AWS::EC2::Instance" myMountPoint: Properties: Device: /dev/xvda InstanceId: myEC2Instance VolumeId: myVolume Type: "AWS::EC2::VolumeAttachment" myVolume: Properties: AvailabilityZone: !GetAtt myEC2Instance.AvailabilityZone Size: 10 SnapshotId: snap-123456 Tags: - Key: Name Value: ebstest VolumeType: gp2 Size: 10 Type: "AWS::EC2::Volume"
I think you may have a simple syntax error here.
Have a look at the YAML code snippet on this page: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-ebs-volumeattachment.html
You need to use !Ref to reference the names of the other resources.
Hope this helps
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