How to Assign EIP to Autoscaling Group VPC in a Cloud Information Template

Question

I want to assign one of my reserved Elastic IP (ec2 classic ip) to the Autoscaling group in VPC. Using AWS Cli, I moved ip to vpc:

$ aws ec2 move-address-to-vpc --public-ip 23.23.23.23

And I saw in aws concole that this IP address was transferred to VPC. And assigned in AutoscalingGroup tags in the Cloudformation template in resources:

"Process": {
        "Type" : "AWS::AutoScaling::AutoScalingGroup",
        "Properties": {
            "LaunchConfigurationName": {"Ref": "PreprocessorLC"},
            "LoadBalancerNames": [{"Ref": "ProcessELB"}],
            "VPCZoneIdentifier" : [{ "Fn::Join" : [",", [ { "Ref" : "PublicSubnet1"}, { "Ref" : "PublicSubnet2"} ]]}],
            "AvailabilityZones": {"Ref": "AZs"},
            "MinSize" : "1",
            "MaxSize" : "1",
            "HealthCheckGracePeriod": 300,
            "Tags" : [
                {"Key": "Name", "Value": {"Fn::Join": ["", [{"Ref": "Env"}, "-Process"]]}, "PropagateAtLaunch": true},
                {"Key": "WorkersScalingGroup", "Value": {"Fn::Join": ["", ["Offering-", {"Ref": "Env"},  "-Process-Worker"]]}, "PropagateAtLaunch": true},
                {"Key": "EIP", "Value": {"Ref": "ProcessIP"}, "PropagateAtLaunch": true},
                {"Key": "Environment", "Value": {"Ref": "Env"}, "PropagateAtLaunch": true}
            ]
        }
    }

And the added value of "ProcessIP" in the parameters:

"ProcessIP":{
            "Description": "DEV: 23.23.23.23",
            "Type": "String",
            "Default": "23.23.23.23",
            "AllowedValues": ["23.23.23.23"]
}

And it didn’t work. Get a random IP anyway. If someone can tell where I am wrong or what to add to make it work?

Thanks!

Answer 1

Here is just a bash script:

#!/bin/sh
# Region in Which instance is running
EC2_REGION='us-east-1'
AWS_ACCESS_KEY='xxxxxxxxxxxx'
AWS_SECRET_ACCESS_KEY='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

#Instance ID captured through Instance meta data
InstanceID=`/usr/bin/curl -s http://169.254.169.254/latest/meta-data/instance-id`

#Elastic IP captured through the EIP instance tag
Elastic_IP=`/opt/aws/apitools/ec2/bin/ec2-describe-tags -O $AWS_ACCESS_KEY -W $AWS_SECRET_ACCESS_KEY --filter resource-id=$InstanceID --filter key='EIP' | cut -f5`
Allocate_ID=`/opt/aws/apitools/ec2/bin/ec2-describe-tags -O $AWS_ACCESS_KEY -W $AWS_SECRET_ACCESS_KEY --filter resource-id=$InstanceID --filter key="AllocationID" | cut -f5`

#Assigning Elastic IP to Instance
aws ec2 associate-address --instance-id $InstanceID --allocation-id $Allocate_ID

Answer 2

IP- EC2. userdata script .

PropagateAtLaunch Auto Scaling Group , Auto Scaling. - , , Elastic IP- .

EIP .