In my CloudFormation file, I created an instance, a Launch Configuration and an Auto Scaling Group.
LogstashInstance:
Type: AWS::EC2::Instance
Properties:
IamInstanceProfile:
Ref: LogstashInstanceProfile
InstanceType: t2.micro
KeyName: chuongtest
ImageId: ami-0cd31be676780afa7
UserData:
SecurityGroupIds:
- Ref: LogstashSecurityGroup
SubnetId: subnet-0e5691582096fe1e6
Tags:
- Key: Name
Value: Logstash Instance
LogstashLaunchConfiguration:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
EbsOptimized: false
IamInstanceProfile:
Ref: LogstashInstanceProfile
ImageId: ami-0cd31be676780afa7
InstanceMonitoring: true
InstanceType: t2.micro
KeyName: chuongtest
LaunchConfigurationName: LogstashLaunchConfiguration
SecurityGroups:
- Ref: LogstashSecurityGroup
UserData:
LogstashAutoScalingGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
AutoScalingGroupName: LogstashAutoScalingGroup
AvailabilityZones:
- ap-southeast-1b
DesiredCapacity: 1
LaunchConfigurationName:
Ref: LogstashLaunchConfiguration
MaxSize: 1
MinSize: 1
Tags:
- Key: Name
PropagateAtLaunch: "false"
Value: Logstash ASG
- Key: Instances
PropagateAtLaunch: "true"
Value: Logstash
My idea is to create an instance, attach it to the ASG and use the ASG to keep the work continue. But this code will launch 2 instances.
The first instances has userdata different from the later instances so I can not delete the instance.
I have looked in the documentation but I can not find anything make sense. Is there a way to configure in the template, or the only way is scripting?