Co-authored with Nirmal Tomar, Principal Consultant, Infosys Technologies Ltd. I can cover Presto/Trino cluster setup on AWS EC2 autoscaling group in a separate post. Select Launch Template, and choose the template named AutoScale-SQS. The EC2 instances in the ASG run a user-data bash script when they launch. Convenient to deploy at scale using StackSets. You can identify the causes of many deployment failures by reviewing the log files created during the deployment process. Amazon EC2 Auto Scaling lifecycle hooks are powerful mechanisms providing the ability for your architecture to respond to Auto Scaling events. 1 Answer. The following summarizes the flow for a scale-out event. In essence, a “managed” node group means AWS creates the auto-scaling group and manages it, for example, deciding which AMI to use, what cloud-init script to put into it so that when the EC2. Introduction. Alternatively, to create a new launch template, use the following procedure. aws. Graceful shutdown script running on the instance will send SIGTERM to sidekiq, monitor if sidekiq finished and then send shutdown -h now command at the end to stop the instance. Amazon ECS leverages the Application Auto Scaling service to provide this functionality. The latest Terraform binary is installed and configured in your system. Amazon EC2 Auto Scaling helps you maintain application availability through fleet management for EC2 instances, which detects and replaces unhealthy instances, and by. In this post, I provided a CloudFormation template and explained how it is used for executing code before an Amazon EC2 Auto Scaling instance terminates. This ensures that your application has the compute capacity that you expect. Instance hibernate: EC2 instances support hibernation. For Value, enter Auto-Shutdown. Declaring a single instance Auto Scaling group . The AWS Instance Scheduler is a simple AWS-provided solution that enables customers to easily configure custom start and stop schedules for their Amazon Elastic Compute Cloud (Amazon EC2) and Amazon Relational Database Service (Amazon RDS) instances. The first step is to install GitLab Runner in an EC2 instance that will serve as the runner manager that spawns new machines. Instance type families - R7g, R6g, R5, M7g, M6g, M5, C7gn. Here are the broad strokes of the process: # AWS_Billing_Overage_Shutdown. The Lambda function changes the ECS container instance. Change the default cooldown period. MetricAggregationType (string) – The aggregation type for the CloudWatch metrics. Sorted by: 119. 25. When an instance is terminated, the instance status changes to terminated . Example 2: To hibernate an Amazon EC2 instance. Deploy a new, error-free application revision to the deployment group. Amazon ElastiCache for Redis now supports auto scaling to automatically adjust capacity to maintain steady, predictable performance at the lowest possible cost. A warm pool is a pool of pre-initialized EC2 instances that sits alongside an Auto Scaling group. Step 1: Create an IAM role with permissions to complete lifecycle actionsDefault termination policy and mixed instances groups. For more information, checkout this AWS tutorial located here. Auto Scaling group: In Amazon EC2, you have the option to set up Amazon EC2 Auto Scaling to make sure that you have the optimal number of EC2 instances to handle your workload. An AWS EC2 Spot Instance is an unused EC2 instance which is available for less than the On-Demand price. 1 Answer. Rather than using Scaling Policies to Launch/Terminate instances for an Auto Scaling group, it is possible to attach/detach specific instances. Amazon Elastic Container Service (Amazon ECS) gives customers the flexibility to scale their containerized deployments in a variety of different ways. It is a great way to install software and configure the machine when it is first used. Optimizing EC2 Auto Scaling Groups (ASG) Configuration. The user (or process) is then responsible for completing the lifecycle action via an AWS API call, resulting in the shutdown of the terminated EC2 instance. ECS also supports different deployment options, including rolling deployments. On the navigation bar at the top of the screen, choose the Region where the load balancer was created. The health status of the instances in your Auto Scaling group indicates whether they are healthy or unhealthy. Now you probably already have a Name for your server in place, so you will see the Key Name with the Value “Yourservername”. For example, notifying an auditing. To signal Amazon EC2 Auto Scaling when the lifecycle action is complete, you must add the CompleteLifecycleAction API call to the script, and you must manually create an IAM role with a policy that allows Auto Scaling instances to call this API. I highly recommend placing the. ) and when it scales in (shuts down instances) to leave the swarm ( docker swarm leave ). You could then use this with Target tracking scaling policies for Amazon EC2 Auto Scaling - Amazon EC2 Auto Scaling, which will calculate the average value of the metric and. If you already have one, you can skip to step 3. For more information, see IAM role for applications that run on Amazon EC2 instances. The following summarizes the flow for a scale-out event. EC2 Auto Scaling is available in all commercial and AWS GovCloud (US). Select the check box next to the Auto Scaling group that you just created. You can terminate an instance using the AWS Management Console or the command line. The action the Auto Scaling group takes when the lifecycle hook timeout elapses or if an unexpected failure occurs. The launch configuration is set to pass in a user-data script that runs the desired job on first boot. Prerequisites. The Lambda function changes the ECS container instance state to. The syntax is exactly the same as the separate aws_autoscaling_lifecycle_hook resource, without the autoscaling_group_name attribute. Prerequisites. The instance is not terminated immediately. 1. LaunchConfigurationName (string) – The name of the launch configuration. For more information, see Health checks for Auto Scaling instances in the Amazon EC2 Auto Scaling User Guide. Note: The following resolution is a simple example solution. Description¶. autoscaling_group modules can, instead of specifying all parameters on those tasks, be passed a Launch Template which contains settings like instance size,. To work around this issue, follow these steps: Manually create an EC2 instance that is not part of the Amazon EC2 Auto Scaling group. ) Make sure there is at least 1 instance in the Auto Scaling group. . SHUTDOWN scripts on Ubuntu must be run as a service, and all services must be in the location /etc/systemd/system/. A lifecycle hook lets you create solutions that are aware of events in the Auto Scaling instance lifecycle, and then perform a custom action on instances when the corresponding lifecycle event occurs. Please note that this will only work when creating a new Auto Scaling Group. For Amazon EC2. The following stop-instances example hibernates Amazon EBS-backed instance if the instance is enabled for hibernation and meets the hibernation prerequisites. ; Replace t2. Running script or command on EC2 instance on termination . 0 Published 6 days ago Version 5. Previously, you could use one of the predefined termination policies to determine which instances Auto Scaling would terminate. Launch an Amazon EC2 instance. aws autoscaling create-or-update-tags --tags ResourceId=my-asg,ResourceType=auto-scaling-group,Key=Role,Value=WebServer,PropagateAtLaunch=true ResourceId=my. The way I set this up, in short, is: Create a role that allows auto scaling to post a message to an SQS queue. It uses NodeJS’s AWS SDK to call autoscaling service API to update the instance count. Can scale down, even if the cluster is not idle, by looking at shuffle file state. Reliable fallback to on-demand instances. Parameters are like variables. For more information, see the Amazon EC2 Auto Scaling User Guide and the Amazon EC2 Auto Scaling API Reference. One of the following two issues causes this error: 1. ps1 -Schedule. If you want to configure autoscaling for ECS, the Autoscaling Target is your ECS Service, example: #. Scaling can be performed on a schedule, or based on a runtime metric, such as CPU or memory usage. aws autoscaling delete-auto-scaling-group --auto-scaling-group-name my-asg. Managed node groups concepts. Choose Actions, Create Auto Scaling group. In the AWS console head over to the search bar and type in “EC2”. Amazon Elastic Container Service (Amazon ECS) gives customers the flexibility to scale their containerized deployments in a variety of different ways. You need the ARN when you create the CloudWatch. ; Now we create an IAM role and attach the policy to. Capacity Rebalancing complements the capacity optimized allocation strategy (designed to help find the most. This operation cannot be called on instances in a warm pool. According to the documentation, if you did not assign a specific termination policy to the group, it uses the default termination policy. AutoScalingGroup class. 0 onwards. For example, the value can be used to differently configure a specific instance within an Auto Scaling group. If I want to make some changes to the systems' configuration (say update the libssl package), I see two options: (1) run packer / manually create a new AMI and setup my auto scaling group to use it. When an Auto Scaling group needs to scale in, replace an unhealthy instance, or re-balance Availability Zones, the instance is terminated, data on the instance is lost and any on-going tasks are interrupted. To verify whether your time, date, and time zone are configured correctly, check the Start time, End time, and Time zone values in the Scheduled actions table on the Automatic scaling tab for your Auto Scaling group. To signal Amazon EC2 Auto Scaling when the lifecycle action is complete, you must add the CompleteLifecycleAction API call to the script, and you must manually create an IAM role with a policy that allows Auto Scaling instances to call this API. Actually it happens very often, almost once a day. Use the detach-instances api to remove the instance from the autoscale group 1-2 minutes before your shutdown. On the ElastiCache console, choose Redis. 0 of the aws provider. Select a launch template. Check out for more information. You can attach a termination lifecycle hook to your ASG using the aws_autoscaling_lifecycle_hook resource: resource "aws_autoscaling_group". import boto3 def hello_autoscaling(autoscaling_client): """ Use the AWS SDK for Python (Boto3) to create an Amazon EC2 Auto Scaling client and list some of the Auto Scaling groups in your account. That instance is also part of an auto-scaling group, which scales on the group's CPU. A low-level client representing Auto Scaling. Then, within the chosen AZ, it uses the Termination Policy to determine which instance to terminate. Ease of creating on-demand resources on AWS can sometimes lead to over-provisioning or under-utilization of AWS resources like Amazon EC2 and Amazon RDS. e. Parameters are used to make the template flexible. We demonstrated the ElastiCache for Redis new auto scaling feature using a Python script to simulate a high load on our cluster where the cluster must scale up using our configured auto scaling policy to meet the demand. After. If you specify LaunchConfigurationName in your update request, you can’t specify LaunchTemplate or MixedInstancesPolicy. If you suspend either the Launch or Terminate process types, it can. Amazon Elastic Container Service (Amazon ECS) now launches tasks faster on container instances that are running tasks that have a prolonged shutdown period. If an instance is unhealthy, Amazon EC2 Auto Scaling will replace it regardless of which feature you use (unless you suspend the ReplaceUnhealthy process). Choose Actions, Create Auto Scaling group. 1,000 handler operations. The CircleCI 1. This command produces no output. The lifecycle hooks for the specified group. Terraform. Whenever your application needs to scale out, the Auto Scaling group can draw on the warm pool to meet its new desired capacity. For more information, see Auto Scaling Groups in the Amazon EC2 Auto Scaling User Guide. Amazon EC2 Auto Scaling ensures that your application always has the right capacity to handle the traffic demand, and saves costs by launching instances only when they are needed. Alternatively, to create a new launch template, use the following procedure. Posted On: Aug 20, 2021. Based on what I've read so far it is ridiculously easy to write the function per instance, again it can be done almost by clicking next next finish within AWS, but we don't want to have. After instance autoscales, having a boot up script(e. SHUTDOWN scripts on Ubuntu must be run as a service, and all services must be in the location /etc/systemd/system/. Be sure to replace YOUR-INSTANCE-ID with your instance's resource ID and YOUR_ASG_NAME with your EC2 Auto Scaling group's name. Co-authored with Nirmal Tomar, Principal Consultant, Infosys Technologies Ltd. About Amazon ECS scheduling Amazon ECS is a container orchestrator that’s designed to be able to launch and track application […] Introduction. The autoscaling guide mentions that when a scale-in policy is met an EC2 is picked and terminated. I know that the instance shutdown with the shutdown command. The script joins each instance to your domain by issuing the SSM API action. Exact command to reproduce: N/A. For step-by-step instructions, see Delete your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide. ec2_instance and community. Amazon EC2 Auto Scaling shows the values for Start time and End time in your local time with the UTC offset in effect at the. 1. 1 Answer. Create a Systems Manager automation document. Step 9. ; If you are using an ec2 instance to run Terraform, ensure you. For information about updating this limit, see Auto Scaling Limits in the Amazon EC2 Auto Scaling User Guide. Step 6. Create an Amazon EC2 Auto Scaling policy that uses target tracking scaling policies or step scaling policies. Sorted by: 1. S3 customization reference. GitHub recommends implementing autoscaling with ephemeral self-hosted runners; autoscaling with persistent self-hosted runners is not recommended. 7 onwards. Create an Amazon EC2 Auto Scaling policy that uses target tracking scaling policies or step scaling policies. You can use it to build resilient, highly scalable applications that react to changes in load by launching or terminating Amazon EC2 instances as needed, all driven by system or user-defined metrics collected and tracked by Amazon CloudWatch. Extend and manage your infrastructure to include cloud resources published in the CloudFormation Registry, the developer community, and. Posted On: Jul 29, 2021. Choose Create function, Author from scratch. Optimized autoscaling has the following characteristics: Scales up from min to max in 2 steps. Now if you navigate to the AMI section you will see a new image is created and is on pending. When instances reach a wait state, Amazon EC2 Auto Scaling sends a notification. This PDF guide provides detailed information on how to use Amazon EC2 Auto Scaling, including concepts, features, tutorials, and. ; If you are using an ec2 instance to run Terraform, ensure you. If the aggregation type is null, the value is treated as Average. sh. Lightsail doesn't support Auto Scaling. Description ¶. For more information on CloudTrail, see Monitoring Amazon RDS API calls in AWS CloudTrail. That seems unusually long in an auto-scaling group where instances are terminated every so often. This example uses the default settings specified in. 7 onwards. Amazon ElastiCache for Redis now supports auto scaling to automatically adjust capacity to maintain steady, predictable performance at the lowest possible cost. ) Creates or updates a warm pool for the specified Auto Scaling group. GitHub recommends implementing autoscaling with ephemeral self-hosted runners; autoscaling with persistent self-hosted runners is not recommended. Autoscaling usually works by scaling "out/in" (adding more/less instances) rather than scaling "up/down" (upsizing/downsizing the instance type). x solution At a high level, our solution includes four parts: An ASG to manage EC2 instances. It can take a few minutes for the instance to stop. Based on what I've read so far it is ridiculously easy to write the function per instance, again it can be done almost by clicking next next finish within AWS, but we don't want to have. For example, an EC2 Auto Scaling Group can be used as a worker tier to offload the processing of audio files, images, or other files sent to the queue from an. After that the script deregisters the instance from the load balancer by putting the instance into standby mode in the Auto Scaling group. 3. 249K subscribers in the aws community. connect_autoscale () ec2 =. Amazon EC2 Auto Scaling now lets you control which instances to terminate during a scale-in event by allowing you to provide a custom function that selects which instances to terminate. 6. Parameters: VpcId: Type: 'AWS::EC2::VPC::Id'. Example 2: Keep instances in the Running state. run "kubectl drain xxx"; 2. The script can retrieve the instance ID from the instance metadata and signal Amazon EC2 Auto Scaling when the bootstrap scripts have completed successfully. Select a launch template. Here’s how to build an example Auto Scaling group using the new CLI tools. 2 :: Continuum Analytics, Inc. This example updates the specified Auto Scaling group to use Elastic Load Balancing health checks. News, articles and tools covering Amazon Web Services (AWS), including S3, EC2, SQS… The user (or process) is then responsible for completing the lifecycle action via an AWS API call, resulting in the shutdown of the terminated EC2 instance. Create ENI (network interface) and assign it Private IP address of your choice, In the Auto Scaling Launch Configuration write user data script which uses the AWS cli tools to discover the pre created ENI and attach it to the ec2. If you suspend either the Launch or Terminate process types, it can prevent other process types from functioning properly. The instance is started using a recurring schedule action that raises the min and max to 1. Workspace in the Premium and Enterprise pricing plans use optimized autoscaling. I am now trying to add a warm pool to the ASG (warm_pool block in the API). Uses tagging to avoid launch configuration changes. On the JSON tab, enter the policy permissions from Listing 1 below. Use an Amazon EC2 Auto Scaling group to create Amazon Elastic Compute Cloud (Amazon EC2) instances based on a launch template and to keep the number of instances in a specified range. There is no configurable OS shutdown time. But, when the EC2 is a part of autoscaling group it goes down sometimes. I'll introduce the resources that you need one by one. In the following command, replace the example instance ID with your own. If you exceed your maximum limit of Auto Scaling groups, the call fails. To customize the preceding script: <region> is the region in which you are creating your Auto Scaling launch configuration (for example, us-east-1). This dimension is available only for Amazon EC2 metrics when the instances are in such an Auto Scaling group. Capacity Rebalancing complements the capacity optimized allocation strategy (designed to help find the most. You can use hibernation instead of stopping the instance. Another plus to Terraform, until it is deployed, the. Amazon EC2 Auto Scaling is a service that helps you adjust the number of EC2 instances in response to your application's demand. Wait for existing connections to drain, either by monitoring existing connections to your application or by allowing a "safe" amount of time. Lets say I have crontask. • Amazon EC2 Auto Scaling – Launch or terminate EC2 instances by increasing or decreasing the desired. g. ”. You can suspend and resume individual processes or all processes. When AWS CloudShell launches in a new browser window for the first time, a welcome panel displays and lists key features. These hooks let you create solutions that are aware of events in the Auto Scaling instance lifecycle, and then perform a custom action on instances when the corresponding lifecycle event occurs. OS commands—You can initiate a shutdown using the shutdown or poweroff commands. Can that be accomplished with boto? There must be some relation between the ASG and the instances as boto has the shutdown_instances method within the boto. To define an AWS Lambda function, add a CDK construct to create an AWS Lambda function inside the constructor defined in the lib/circleci-self-hosted-runner-autoscaling-stack. The launch configuration is set to pass in a user-data script that runs the desired job on first boot. It seems that normal machine reboots and cycles properly fire up said script. Create ENI (network interface) and assign it Private IP address of your choice, In the Auto Scaling Launch Configuration write user data script which uses the AWS cli tools to discover the pre created ENI and attach it to the ec2. Instance sizes - Large, XLarge, 2XLarge. Sorted by: 1. Call the group ASG-SQS. This section shows you examples of creating and managing launch templates for Amazon EC2 Auto Scaling from the Amazon CLI. Data tiering (cluster mode enabled) clusters running Redis engine version 7. This will create a new instance in the ASG group,. When a job appears in the queue, the AWS Lambda function will trigger the Auto Scaling group to increase its capacity. For more information, see. m3. / Client / describe_auto_scaling_groups. Due to security requirements autoscaling scale out and scale in is not allowed. LaunchTemplate (dict) – . 38Open the Launch templates page of the Amazon EC2 console. On the Tags tab underneath the instance details, choose Add tags. Workspaces on the standard pricing plan use standard autoscaling. Prerequisites. 0. For <region>, enter your Region name, such as us-east-1. Then use aws ec2 terminate-instances like you are doing. aws autoscaling describe-launch-configurations --max-items 1. AWS sets the Spot price for each instance type in each availability zone based. Uses tagging to avoid launch configuration changes. Upvoted this answer because describe-auto-scaling-groups is a lot faster than describe-auto-scaling-instances. The script will be also invoked on shutdown and termination. I'm assuming you are using the AWS management console. The default value is 3600 seconds (1 hour). I have a problem with the user-data script on the. For more information, see Scaling cooldowns for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide. To resize an instance, you have to stop it then go to Actions > Instance Settings > Change Instance Type. Queries that are running will complete execution before the node is decommissioned. Abstract implementation of AmazonAutoScaling. Before we proceed with creating auto scaling group of EC2 instances, we need to create a default VPC and the. 26. The launch. When you disable a scaling policy, the configuration details are preserved, so you can quickly re-enable the policy. When the group increases, I want it to add itself into a pool. Use Application Auto Scaling to configure auto scaling for resources beyond just EC2, either with scaling policies or with scheduled scaling. Posted On: Aug 20, 2021. An ASG is a collection of Amazon EC2 instances, treated as a logical group for automatic scaling and management purposes. autoscale. 0 onwards. In the AWS Management Console, navigate to the EC2 Dashboard. Automated spot termination handling. Create a security group that allows traffic from the internet and associate it with the Auto Scaling group instances. Name your policy LambdaRDSStartStopPolicy and add a description. The setup is an auto-scaling group of EC2 instances that each act as Docker swarm nodes. For more information, see Suspending and Resuming Scaling Processes in the Amazon EC2 Auto Scaling User Guide. EC2 (Elastic Compute Cloud) EC2 Image Builder. I'm bootstrapping an Amazon Elastic Compute Cloud (Amazon EC2) Windows instance using the cfn-init (cfn-init. Install and configure Jenkins. Tasks. Tasks can be scaled-out to react to an influx of requests or they can be scaled-in to reduce cost. ”. Automated spot termination handling. For all other use-cases, please use aws_autoscaling_lifecycle_hook resource: list(map(string)) [] no:. I did like the simple script below I found on this blog. First, enter a. Presumably, ASG instances must be terminated during scale in events. AWS CLI is installed and configured with a valid AWS account with permission to deploy the autoscaling group and application load balancer. {"payload":{"allShortcutsEnabled":false,"fileTree":{"scripts":{"items":[{"name":"scale-down. With autoscaling this is not directly possible to assign an Elastic IP to autoscaled instances. sh script. The instance remains in this state until you exit the standby state. The only difference between an On-Demand Instance and a Spot Instance is that a Spot Instance can be interrupted by Amazon EC2 with two minutes of notification when EC2 needs the. That way, the shutdown script would only have to sync data added/changed in the previous 5 minutes. you can get private IP address using describe-instances – Ben Kim Dec 20, 2019 at 1:33Auto Scaling is a key AWS service. Updating Auto Scaling Groups to Use Launch Templates Using the AWS Console: Navigate to the AWS EC2 console, open the navigation pane, and select Auto Scaling Groups. Data tiering (cluster mode enabled) clusters running Redis engine version 7. Intro. The ec2 monitoring graphs show that CPU usage goes up to 100%, then the instance become not responsive and then it is terminated by autoscaling group. ECS (Elastic Container) EFS (Elastic File System) EKS (Elastic Kubernetes) ELB (Elastic Load Balancing) ELB Classic. This will also terminate the EC2 instances. 2. EC2 can also be found in services under the “ Compute ” submenu. For more information on CloudTrail, see Monitoring Amazon RDS API calls in AWS CloudTrail. Select the instance and choose Instance state, Stop instance. Scale out by one instance if average CPU usage is above 70%, and scale in by one instance if CPU usage falls below 50%. Step 1 — Launch an Auto Scaling group that spans 2 subnets in your default VPC. You create an auto scaling policy to increase the group size based on demand. Run my docker job. In the left-hand menu, click on Auto Scaling groups under Auto Scaling. You create collections of EC2 instances, called Auto Scaling groups. and have that script run before instance shutdown. This helps you to ensure that instances are ready to quickly start serving application traffic, accelerating the. An AWS EC2 Spot Instance is an unused EC2 instance which is available for less than the On-Demand price. By Deepthi Chelupati and Chad Schmutzer AWS now offers Capacity Rebalancing for Amazon EC2 Auto Scaling, a new feature for proactively managing the Amazon EC2 Spot Instance lifecycle in an Auto Scaling group. When the auto-scaling group scales out (spawns new instance) I'd like to run a command on the instance to join the Docker swarm (i. Amazon EC2 Auto-Scaling Lifecycle Hooks. For more information about rebooting an instance, see Reboot Your Instance in the Amazon EC2 User Guide for Linux Instances. When you use an OS command, the instance stops by default. In certain cases, GitHub cannot guarantee that jobs are not assigned to persistent runners while they are shut down. I am now trying to add a warm pool to the ASG (warm_pool block in the API). Call the group ASG-SQS. Scale out by one instance if average CPU usage is above 70%, and scale in by one instance if CPU usage falls below 50%. A common way to create custom actions for lifecycle hooks is to use notifications that Amazon EC2 Auto Scaling sends to other services, such as Amazon EventBridge. Karpenter is an open-source, flexible, high-performance Kubernetes cluster autoscaler built with AWS. So, in the above script we are moving the delete_dns. A warm pool is a pool of pre-initialized EC2 instances that sits alongside the Auto Scaling group. Lifecycle hooks enable you to perform custom actions by pausing instances as an Auto Scaling group launches or terminates them. Once all that is done, you should be able. service file into the. ElastiCache for Redis uses AWS Application Auto Scaling to. The aws-node-termination-handler Instance Metadata Service Monitor will run a small pod on each host to perform monitoring of IMDS paths like /spot or /events and react accordingly to drain and/or cordon the. These instances will be used solely as a means to test our lambda functions. You schedule scaling to increase the group size at a specified time. An Auto Scaling group also lets you use Amazon EC2 Auto Scaling features such as health check replacements and scaling policies. As per as Private IP is concern kindly create small subnet and choose it when creating Auto Scaling Group. The Auto Scaling group should have a min of 2 and max of 5. An Auto Scaling group contains a collection of EC2 instances that are treated as a logical grouping for the purposes of automatic scaling and management. Amazon EC2 Auto Scaling is designed to automatically launch and terminate EC2 instances based on user-defined scaling policies, scheduled actions, and health checks. For more information, see Suspend and resume a process for an Auto Scaling group . Create a key pair using Amazon EC2. This metadata value is useful for naming or identifying instances launched under Auto Scaling. This will cause a continual 'flip-flop' situation rather than trying to find a steady-state. You can do this from the EC2 console or CLI: aws autoscaling put-lifecycle-hook --lifecycle-hook-name my-lifecycle-hook --auto-scaling-group-name My_AutoScalingGroup Amazon EC2 Auto Scaling uses termination policies to determine which instances it terminates first during scale-in events. You have got something called Lifecycle Hooks that lets you perform custom actions as an Autoscaling group launches or terminates. Workspaces on the standard pricing plan use standard autoscaling. A common use case for lifecycle hooks is sending notifications to an Amazon EventBridge which in turn can invoke serverless functions. That can stay as it is, simply click on Create Tag to create a new tag. Then we’ll add the following code to the function code. This example adds two tags to the specified Auto Scaling group.